Summary:  from Steidel et al.) Obs. sources can plausibly explain 20-40 keV X-ray bkg. #12;Circles show 2 Ms... X-ray Survey Results on AGN Physics and Evolution Chandra Best positions Highest sens. < 6 keV PSU... with implications for AGN physics Evolution and role in galaxy evolution Resolve ...

Source: Brandt, William Nielsen - Department of Astronomy and Astrophysics, Pennsylvania State University

Collection: Physics

Summary:  (rest-frame 20-40 keV) Find or constrain sky dens. exploiting content of high-redshift populations... immediate vicinity of black hole and larger scale environment X-ray emission is a universal property of AGN... Commonly 5-30% of total power When AGN are X-ray weak, mostly just absorption #12;Soft X-ray ...

Source: Brandt, William Nielsen - Department of Astronomy and Astrophysics, Pennsylvania State University

Collection: Physics

Summary:  3.5 4 100 200 300 Fe Ca Ar S 4.5 5 5.5 6 6.5 7 7.5 0 20 40 60 S Si Al Mg 7.5 8 8.5 9 9.5 10 10.5 0 5... hole + gas = Same thing, every time! #12;2 The Chandra Deep Field-North Red: 0.5-2 keV Green: 2-4 keV... Blue: 4-8 keV ~ 6-7 extended sources ~ 582 point sources 448 arcmin (~ 60% ...

Source: Brandt, William Nielsen - Department of Astronomy and Astrophysics, Pennsylvania State University

Collection: Physics

Summary:  .e. optically absorbed AGNs with AV > 2 mag) dramatically increases going from the 0.5­4.5 keV sample (f = NAGN2... . In particular, we discuss in detail the classification criteria adopted for the active galactic nuclei (AGNs... survey and applied a well-defined classification "flow chart". Results. We find that the ...

Source: Tedds, Jonathan - XMM-Newton Survey Science Centre, University of Leicester

Collection: Physics

Summary:  ­10 keV X-ray luminosity (RIR/X) in AGN, we can investigate the reprocessing material (pos- sibly a torus... of observed mid-IR and 2­10 keV X-ray luminosities in a heterogeneous sample of 245 AGN from the literature... phenomenon underlies all AGN. How- ever, as yet, there have been no ...

Source: Reynolds, Christopher S. - Department of Astronomy, University of Maryland at College Park

Collection: Physics

Summary:  over #24;20{40 keV above the canonical lower-energy power-law. This can be explained as due to re... energy end of the spectrum in AGN (below 10 keV) is modi#12;ed by obscuring gas through photoelectric... the majority of the CXB ux at #24;1{2 keV, most objects known twenty years ago ...

Source: Gandhi, Poshak - Institute of Astronomy, University of Cambridge

Collection: Physics

Summary:  of power, is seen in many AGN over 20­40 keV above the canonical lower-energy power-law. This can... hundred keV. More details of the main features in AGN X-ray spectra are discussed in section 2.2. 3 #12... to hundreds of keV, X-ray and gamma-ray telescopes have ...

Source: Gandhi, Poshak - Institute of Astronomy, University of Cambridge

Collection: Physics

Summary:  ( f0:5Y2:0 keV > 10À15 ergs cmÀ2 sÀ1 ) enabled AGNs to be detected at lower luminosities and out... the XLF of AGNs in the hard X-ray (intrinsic 2Y8 keV) band with an emphasis on reducing uncertainties... -redshift AGNs. We generate both a hard (2Y8 keV) and ...

Source: Kim, Dong-Woo - Harvard-Smithsonian Center for Astrophysics

Collection: Physics

Summary:  ( f0:5Y2:0 keV > 10À15 ergs cmÀ2 sÀ1 ) enabled AGNs to be detected at lower luminosities and out... the XLF of AGNs in the hard X-ray (intrinsic 2Y8 keV) band with an emphasis on reducing uncertainties... -redshift AGNs. We generate both a hard (2Y8 keV) and ...

Source: Green, Paul - Harvard-Smithsonian Center for Astrophysics

Collection: Physics

Summary:  a significant role in shaping gas "Radio-Loud" SeyfertGalaxies: Jetvs.AGN Chandra (0.5-1.5 keV)/ VLA / HST [OIII... TheChandraViewofRadiativeandKineticEnergyDissipationinAGN Dan Evans (MIT Kavli Institute / Harvard... ) #12;TheChandraViewofRadiativeandKineticEnergyDissipationinAGN ...

Source: Evans, Daniel A. - Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology (MIT)

Collection: Physics

Summary:  & Fabian (1991) #12;Energy Transport in Radioloud AGN · The 6.4 keV Fe K line complex in general consists... -2 keV) gas? #12;Energy Transport in Radioloud AGN Environmental Heating by Radio Outbursts... ) Radio outburst transfers 1/3 keV of energy per particle #12;Energy Transport ...

Source: Evans, Daniel A. - Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology (MIT)

Collection: Physics

Summary:  accepted that X-ray obscured AGNs play a significant (and perhaps major) role, the use of the 4.5-7.5 keV... s-1 in the 0.5-4.5 keV and 4.5-7.5 keV energy band, respectively. After discussing the main goals... .5-4.5 keV and in the 4.5-7.5 keV energy bands) are in ...

Source: Tedds, Jonathan - XMM-Newton Survey Science Centre, University of Leicester

Collection: Physics

Summary:  AGN ~ 30 times fainter than SDSS - Minimize absorption bias (rest-frame 2-40 keV) Alexander et al... Chandra Best positions Highest sens. < 6 keV 50-250 times sens. of previous missions Good positions... .70p 0.454 0.960 Norm. gal. Off-nuc. AGN - Ty1, unobs. AGN - Ty 1, obs. ...

Source: Brandt, William Nielsen - Department of Astronomy and Astrophysics, Pennsylvania State University

Collection: Physics

Summary:  . As noted in the text, two categories (or definitions) of AGNs are considered: all-AGNs with RXTE 3-20keV... intrinsic luminosities, L3-20 1041 ergs/s shown as "×", and broadline-AGNs with 2-8keV intrinsic... broadline-AGNs. For the all-AGN ...

Source: Matthews, John A. J. Department of Physics and Astronomy, University of New Mexico

Collection: Physics

Summary:  within Find local examples for detailed Swift coming too; about 400 AGN in 10-150 keV band. Understand... SAX X-raying AGN Found and Missed by SDSS Chandra XMM-NewtonSDSS ROSAT ASCA Swift Con-X #12;Utility of X... -ray AGN Studies X-ray emission nearly universal Highest density on sky - Chandra Deep Fields ...

Source: Brandt, William Nielsen - Department of Astronomy and Astrophysics, Pennsylvania State University

Collection: Physics

Summary:  Catalog . . . . . . . . . . . . . . . . . . . . . . 132 6.9.3 The Hard X-ray 20-40 keV AGN Luminosity... Population Studies at Hard X-rays . . . . . . . . . . . . . . . . . . . . . . . . 62 4.7.1 The Hard X-ray 20­40... keV Luminosity Function . . . . . . . . . . . . . . . 62 4.7.2 Hard ...

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  TheChandraViewofRadiativeandKineticEnergyDissipationinAGN The Chandra HETG and Suzaku View... of the NLR and Radio-Loud/ Radio-Quiet Dichotomy in AGN Dan Evans (MIT Kavli Institute / Harvard University... AGNs Normal galaxies X-ray AGNs Normal galaxies IRAC AGNs 0 10 20 30 40 50 ...

Source: Evans, Daniel A. - Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology (MIT)

Collection: Physics

Summary:  -frame 2-8-keV luminosity LXH 1035 W can only be explained by a type-II AGN (see Sect. 6.2). Padovani et... VO tools to investigate distant radio starbursts hosting obscured AGN in the HDF(N) region A. M. S... and high luminosity characteristic of a type-II (obscured) AGN. More than 70% of the radio sources ...

Source: van Langevelde, Huib Jan - Joint Institute for VLBI in Europe

Collection: Physics

Summary:  galactic nuclei (AGNs), defined as those objects having broadband X-ray luminosities LX(0.5­8 keV) 1042 erg... . The American Astronomical Society. All rights reserved. Printed in the U.S.A. THE FIELD X-RAY AGN FRACTION TO z... the field AGN fraction to be between 0.16% ± 0.06% (for z 0.125 and -18 > Mi ...

Source: Green, Paul - Harvard-Smithsonian Center for Astrophysics; Kim, Dong-Woo - Harvard-Smithsonian Center for Astrophysics

Collection: Physics

Summary:  . While ROSAT has shown that unab- sorbed AGNs dominate the soft (0.1­2 keV) CXRB (Hasinger et al. 1998... ), its high-energy spectrum (2­30 keV) is harder than that of known AGNs. Models based on the CXRB... ............. SBS 0335À052 47.0 0123 03 37 44.0 À05 02 39.0 2000 Sep 07 4.98 624............. LP ...

Source: Green, Paul - Harvard-Smithsonian Center for Astrophysics; Kim, Dong-Woo - Harvard-Smithsonian Center for Astrophysics

Collection: Physics

Summary:  , 0.5 ­ 2.0 keV) Measured within a circular aperture (rextract = 5 , except for RX J1834.1+7057 where... rextract = 6.5 ) 9 Total Flux (fX,tot, 10-14 erg s-1 cm-2, 0.5 ­ 2.0 keV) 10 Gas Temperature... of the Intercluster Medium (kT, keV) Estimated for galaxy clusters using the LX - kT relation 11 Luminosity (LX, 1044

Source: Mullis, Christopher R. - Department of Astronomy, University of Michigan

Collection: Physics

Summary:  nuclei (AGN), defined as those objects having broad-band X-ray luminosities LX(0.5- 8 keV) 1042 erg s-1... LATEX style emulateapj v. 11/10/09 THE FIELD X-RAY AGN FRACTION TO z = 0.7 FROM THE CHANDRA... AGN fraction to be between 0.16 ± 0.06% (for z 0.125 and -18 > Mi > -20) and 3.80 ± 0.92% (for z ...

Source: Shahriar, Selim - Department of Electrical and Computer Engineering, Northwestern University

Collection: Engineering

Summary:  , 40, 50, 75 and 100 keV is <10 per cent, while a maximum contribution of 97 per cent at 5 keV... .44. The contribution from various classes of AGN is shown as well, with type 1 sources dominating below 2 keV, while... : =8. These represent deviations from the observed spectrum of less ...

Source: Gandhi, Poshak - Institute of Astronomy, University of Cambridge

Collection: Physics

Summary:  . They detected 8 of the 10 AGNs with IMBH with a significance 3. They measured the 0.5-2 keV photon indices... ), we have plotted the normalized excess variance as a function of 2 - 10 keV luminosity for AGNs... of seven of these AGNs excluding NGC 4395. All AGNs are ...

Source: Inter University Centre for Astronomy and Astrophysics (IUCAA), India

Collection: Physics

Summary:  :20:38 81600475 08-Feb.-1998 L02 HSMITH IRBGALS n.a. 0:20:40 81600676 08-Feb.-1998 L02 HSMITH IRBGALS n.a. 0:20:40... et al. 1998; Iwasawa & Comastri 1998). The hard X-rays (2­10keV) are dominated by AGN emission... et al. 2003). Above 10 keV, absorbed direct AGN ...

Source: Spoon, Henrik - Department of Astronomy, Cornell University

Collection: Physics

Summary:  .0' radius, which includes 99% of the simulated photons. Spectral performance Cyg X-1 spectrum: 0 20 40 60 80... SelectionEfficiency:71% 0 20 40 60 80 100 Energy[keV] -15 -10 -5 0 5 10 15 FitSourceEvents:450 BackgroundEvents:29 Fit... -coated grazing incidence telescopes that operate from 6 to 68 ...

Source: High Energy Focusing Telescope Program

Collection: Physics

Summary:  energies between a few keV and 10 keV) can directly probe AGN activity, since they are almost... of the AGN sample selected in the 4.5-7.5 keV range (the HBSS AGN sample). In Sect. 3, we study the cos... . Della Ceca et al.: The cosmological properties of ...

Source: Tedds, Jonathan - XMM-Newton Survey Science Centre, University of Leicester

Collection: Physics

Summary:  TheChandraViewofRadiativeandKineticEnergyDissipationinAGN Do AGN Outflows Cease Star Formation... .g. Smolcic et al. (2006), Faber et al. (2006), Hickox et al. (2009) O utflows? Q. Can the AGN actually... the ionizing effect of AGN on the kpc- scale NLR. #12;Searching For Outflows: Multi- Imaging [OIII] arcs ...

Source: Evans, Daniel A. - Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology (MIT)

Collection: Physics

Summary:  2 Red: 0.5-2 keV Green: 2-4 keV Blue: 4-8 keV Results from the Chandra Deep Field-North Chandra... -ray Fluxes - Diversity of X-ray Sources AGN Starbursts and AGN Galaxies At faint X-ray fluxes, optical fluxes... Optical Spectroscopic Follow-Up 87% complete to R = 24 Barger et al. (2003) ...

Source: Brandt, William Nielsen - Department of Astronomy and Astrophysics, Pennsylvania State University

Collection: Physics

Summary:  observed 2-10keV X-ray and 12- 100µm infra-red luminosi- ties in a large, heterogeneous sample of 245 AGN... we plot the mean observed 12µm luminos- ity versus mean observed 2-10keV luminosity for the AGN... lumi- nosity versus mean observed 2-10keV X-ray luminosity for the Group 1 ...

Source: Reynolds, Christopher S. - Department of Astronomy, University of Maryland at College Park

Collection: Physics

Summary:  range of 3­100 keV. So, while extreme light bending in a large fraction of AGN is unlikely, strong light... Abstract: We investigate the effect of incorporating gen- eral relativistic light bending in AGN template... are relatively sharp, with peak energies above 30 keV especially at large inclination ...

Source: Gandhi, Poshak - Institute of Astronomy, University of Cambridge

Collection: Physics

Summary:  The Chandra Survey of Outflows in AGN with Resolved Spectroscopy (SOARS) Dan Evans (CfA and Elon... be solved with AGN feedback-18 -20 -22 -24 -26 0 -2 -4 -6 log(/h3 Mpc-3 mag-1 ) MK - 5log h Cole et al... with AGN feedback-18 -20 -22 -24 -26 0 -2 -4 -6 log(/h3 Mpc-3 mag-1 ) MK - 5log h Cole et al. (2001) Huang

Source: Evans, Daniel A. - Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology (MIT)

Collection: Physics

Summary:  :9 \Theta 10 \Gamma5 E l (keV) 6.46 +0:03 \Gamma0:04 NH;AGN (10 22 cm \Gamma2 ) 0.0 +2:4 \Gamma0 KAGN... that these sources, if not all, are possibly AGN. 4 RXTE + ASCA JOINT FIT In this section, we model the 0.5--200 keV... ) a) 2:8 \Theta 10 \Gamma5 E l (keV) 6.44 ...

Source: Boehringer, Hans - Max-Planck-Institut für extraterrestrische Physik

Collection: Physics

Summary:  The Chandra Survey of Outflows in AGN with Resolved Spectroscopy (SOARS) Dan Evans (Elon University... end of the galaxy mass function can be solved with AGN feedback.-18 -20 -22 -24 -26 0 -2 -4 -6 log(/h3... ?Do AGN outflows actually deliver enough kinetic power to their environments to alter the evolution

Source: Evans, Daniel A. - Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology (MIT)

Collection: Physics

Summary:  1 AGNs in the soft X-ray band (0.5­2.0 keV) that confirms the broadband turnover described above... density of low-luminosity (L2:0 ­8:0 keV < 1044 ergs sÀ1 ) AGNs found in hard (2­10 keV) X-ray surveys... ) for the most luminous AGNs (log L0:3 ­8:0 ...

Source: Green, Paul - Harvard-Smithsonian Center for Astrophysics; Kim, Dong-Woo - Harvard-Smithsonian Center for Astrophysics

Collection: Physics

Summary:  TheChandraViewofRadia0veandKine0cEnergyDissipa0oninAGN The X-rayView of Radiative and Kinetic... Energy Dissipation in AGN Dan Evans (Chandra HETG Postdoctoral Associate) #12;Roadmap to Understanding... Energy Transport in AGN: 3 Key Problems 2) How is the energy deposited? Narrow line region (kpc) 3) How

Source: Evans, Daniel A. - Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology (MIT)

Collection: Physics

Summary:  population of AGN spectra? 2. The Premise : fitting the XRB We propose to constrain the fraction (f) of AGN... -axis flare at height h=2 5 10 20 h=2 5 flare 20 10 64% 83% 98% loss Flux loss due to light bending2--10 keV... by NeXT 5. Implications: BH spin, AGN luminosity functions, hard surveys Torus ...

Source: Gandhi, Poshak - Institute of Astronomy, University of Cambridge

Collection: Physics

Summary:  that is typically Ec = 20 - 40 keV and can be as high 70 keV (Holman et al., 2003). Using the BREMTHICK3 code by G... October 11, 2007 Results from DROXO. I. The variability of fluorescent Fe 6.4 keV emission in the young... date / Accepted date ABSTRACT Aims. We study the variability of ...

Source: Osservatorio Astronomico Di Palermo, Giuseppe S. Vaiana

Collection: Physics

Summary:  Effect of AGN? #12;[OIII] arcs [OIII] knots Radio ejecta Chandra 0.3-2 keV 3'' = 1 kpc Bianchi, Evans, et... Energy Dissipation in AGN Dan Evans (MIT Kavli Institute), Herman Marshall (MIT), Stefano Bianchi (Roma... ), Claude Canizares (MIT) #12;Roadmap to Understanding Energy Transport in AGN: 3 Key Problems ...

Source: Evans, Daniel A. - Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology (MIT)

Collection: Physics

Summary:  and optical counterparts brighter than V~21 observed 978 serendipitous X-ray sources with 0.5-4.5 keV flux >10... characterisation of the dominant X-ray source populations (e.g. AGN luminosity functions, absorption distribution... have now identified 1000 sources with F0.5-4.5keV > 10-14 ergs-1cm2 which is an unsurpassed ...

Source: Tedds, Jonathan - XMM-Newton Survey Science Centre, University of Leicester

Collection: Physics

Summary:  -ray spectrum of AGN, the Fe K line (6.4-6.9 keV depending on ionization state) being the best studied one... . Corral, et al.: Average Fe K emission from distant AGN each individual spectrum above 1 keV (rest... distant AGN 5 1 102 5 0.110.20.5 RescaledFlux(keVcm-2 s-1 ...

Source: Tedds, Jonathan - XMM-Newton Survey Science Centre, University of Leicester

Collection: Physics

Summary:  -RAY AGN FRACTION TO z = 0.7 FROM THE CHANDRA MULTIWAVELENGTH PROJECT AND THE SLOAN DIGITAL SKY SURVEY... to investigate the local fraction of active galactic nuclei (AGN), defined as those objects having broad-band X... -ray luminosities LX (0.5- 8 keV) 1042 erg s-1 , as a function of absolute optical magnitude, X-ray luminosity

Source: Kim, Dong-Woo - Harvard-Smithsonian Center for Astrophysics

Collection: Physics

Summary:  The AGN­Starburst Connection in Warm Infrared Galaxies Lisa Jennifer Kewley A thesis submitted... Volmerange, and members of the COLA (Compact Objects in Low­power AGN) collaboration. I am deeply indebted... an investigation into the connection between starburst ac­ tivity and Active Galactic Nuclei (AGN) in warm infrared

Source: Kewley, Lisa J. - Institute for Astronomy, University of Hawai'i at Manoa

Collection: Physics

Summary:  ) showed that the X-ray se- lected AGN in clusters was 5% (for 0.5-8keV LX > 1041 erg s-1 in galaxies above... MEASUREMENT OF A RAPID INCREASE IN THE AGN FRACTION IN HIGH-REDSHIFT CLUSTERS OF GALAXIES JASON EASTMAN 1... JL Accepted [1 June 2007] ABSTRACT We present the first measurement of the AGN fraction ...

Source: Martini, Paul - Department of Astronomy, Ohio State University

Collection: Physics

Summary:  ) and recent RHESSI data indicates a low-energy cutoff that is typically Ec = 20­40 keV and can be as high 70... from Droxo I. The variability of fluorescent Fe 6.4 keV emission in the young star Elias 29. High... / Accepted 8 September 2007 ABSTRACT Aims. We study the variability of the Fe 6.4 keV emission ...

Source: Micela, Giusi - Osservatorio Astronomico Di Palermo Giuseppe S. Vaiana

Collection: Physics

Summary:  if the deviation of the normalized spectrum on a grid of energies at 10, 20, 40, 50, 75 and 100 keV is #24; <10 per... the observed spectrum of less than 12 per cent at 10, 20, 40, 50, 75 and 100 keV, after normalization... of the 2{10 keV ...

Source: Gandhi, Poshak - Institute of Astronomy, University of Cambridge

Collection: Physics

Summary:  the discovery of a high­redshift, X­ray--selected active galactic nucleus (AGN) by the Calan­Yale Deep... Extragalactic Research (CYDER) survey: CXOCY J033716.7#050153, located at z ¼ 4:61, the second high­redshift AGN... it with other optical and X­ray--selected high­redshift AGNs. The optical luminosity of this object

Source: Coppi, Paolo - Department of Astronomy, Yale University

Collection: Physics

Summary:  .96 ^ 0.01 1.10 ~0.01 ‘0.02 (59%) 114 ^ 18 3.91 ~0.47 ‘0.46 1.8 ^ 0.06 6 . . . . . 3.54 ~0.24 ‘0.20 (40... .5È240 keV spectrum has revealed a heavily absorbed cm~2) primary power law (! \ 1.86 ^ 0... was not required. The iron­line width is unresolved at the 95% conÐdence level (p \ 0.54 keV). No signi

Source: Rothschild, Richard E. - Center for Astrophysics and Space Sciences, University of California at San Diego

Collection: Physics

Summary:  .02 (59%) 114 ^ 18 3.91 ~0.47 `0.46 1.8 ^ 0.06 6 . . . . . . 3.54 ~0.24 `0.20 (40%) . . . . . . . . . RXT... ) observation of the radio galaxy Centaurus A on 1996 August 14. Analysis of the combined 2.5È240 keV spectrum... . The iron-line width is unresolved at the 95% conÐdence level (p \ 0.54 keV). No ...

Source: Blanco, Philip R. - Center for Astrophysics & Space Sciences, University of California at San Diego

Collection: Physics

Summary:  & Fabian 2004). The variability is driven mainly by O1 O2 O3 O4 -1 ) 0 20 40 60 80 100 Powerlaw Flux (erg... , spectral variability and timing studies. The two main features in the spectrum are the drop at 7 keV... and a complex excess below 1 keV. These are well described by two broad, K and L, iron ...

Source: Reynolds, Christopher S. - Department of Astronomy, University of Maryland at College Park

Collection: Physics

Summary:  -ray selected AGN was performed by Boyle & Mo (1993) using 183 AGN (z < 0.2, FX > 10-13 erg s-1 cm-2, 0.5­2.0 keV... of AGN. The first consisted of 107 AGN (0 < z < 3.5, < z > = 1.43, FX > 10-14 erg s-1 cm-2, 0.5­2.0 keV... is composed of ...

Source: Mullis, Christopher R. - Department of Astronomy, University of Michigan

Collection: Physics

Summary:  of a high-redshift, X-ray­selected active galactic nucleus (AGN) by the Calan-Yale Deep Extragalactic... Research (CYDER) survey: CXOCY J033716.7À050153, located at z ¼ 4:61, the second high-redshift AGN... it with other optical and X-ray­selected high-redshift AGNs. The optical luminosity of this object

Source: Coppi, Paolo - Department of Astronomy, Yale University

Collection: Physics

Summary:  II AGN reveals a very prominent iron K line at an energy of 6.6 keV and an EW 2 keV. Key words... in the shown 4-8.2 keV energy range, the AGN stack 300 counts. The squares represent the ratio between the flux... AGN X-ray spectra a signifi- cant excess at 6-7 ...

Source: Tedds, Jonathan - XMM-Newton Survey Science Centre, University of Leicester

Collection: Physics

Summary:  Spectrograph of SIRTF Infrared Spectrograph, J.R.Houck, Cornell, PI. R=600 echelle spectrographs, 10-20 and 20-40... Dust and mid-IR properties of Interacting Galaxies and AGN Vassilis Charmandaris Cornell University... (~200-1500K) in a equilibrium is observed via a near/mid-IR "bump" close to tori of AGNs. #12;VC - Yale

Source: Charmandaris, Vassilis - Department of Physics, University of Crete

Collection: Physics

Summary:  · Enhance XEUS high-energy-response (e.g. AE~3000 cm2 in the 20-50 keV band) resolve highly-obscured AGNs... to resolving highly obscured AGN up to z = 1, detailed (imaging) spectroscopy of hard X-ray tails in compact... binaries, SNRs, AGNs and clusters of galaxies to discriminate inverse Compton, ...

Source: Boller, Thomas - Max-Planck Institut für extraterrestrische Physik

Collection: Physics

Summary:  AGN with LX,B > 1041 ergs-1 , where LX,B is the broad (0.3­8keV) band X-ray luminosity. Most... -FIELD CHANDRA X-RAY OBSERVATIONS OF AGN IN ABELL 85 & ABELL 754 GREGORY R. SIVAKOFF 1 , PAUL MARTINI 1 , ANN I... understand the mechanism or mechanisms that lead to AGN activity today, we measure the ...

Source: Martini, Paul - Department of Astronomy, Ohio State University

Collection: Physics

Summary:  , and more recently to the Chandra and XMM missions, the selection of AGN in the soft 0.5-2 keV band yield... to observe, how in the soft X-ray band 0.5-2 KeV, type-1 AGN constitute the major population of bright... GAVIGNAUD Propri´et´es statistiques des AGN de faibles luminosit´es ...

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  Angular Clustering of Obscured AGN P. Gandhi(Institute of Astronomy, Univ. Cambridge & European... detected over 4.2 contiguous sq. degs. of the XMM-LSS sur- vey to fluxes of F2-10 keV 8 × 10-15 erg s-1 cm... -2 and F0.5-2 keV 2 × 10-15 erg s-1 cm-2 respectively. For 1200 sources in the soft band, we found

Source: Gandhi, Poshak - Institute of Astronomy, University of Cambridge

Collection: Physics

Summary:  (XRB). AGN show a power-law continuum up to #24; 100 keV, at which point the spectrum cuts o#11... later. Table 1. Continuum photon indices for various samples of AGN Sample Range Photon Reference (keV... -ray spectra of AGN [23]. The re ection continuum peaks at #24; 30 ...

Source: Nandra, Paul - Department of Physics, Imperial College, London

Collection: Physics

Summary:  Selecting AGN from the WIRE Deep Survey F. Masci, C. Lonsdale, . . . The following ideas are very... much qualitative. Due to some uniformity in the properties of currently known AGN (both types I and II... . 1 R-band Imaging and WIRE? 1.1 Type I AGN: Emission from face-on torus (with warm dust visible

Source: Masci, Frank - Infrared Processing and Analysis Center, California Institute of Technology

Collection: Physics

Summary:  arXiv:0910.3023v2[astro-ph.CO]27Oct2009 Proceedings of "Accretion and Ejection in AGN: A Global... . Ghisellini, R. Della Ceca and F. Tavecchio Searching for AGN Outflows: Spatially Resolved Chandra HETG... -ray spectroscopy of the `ionization cone' in any AGN, and use the sensitive line diagnostics offered by the HETG

Source: Evans, Daniel A. - Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology (MIT)

Collection: Physics

Summary:  AGN more luminous than LX = 1041 erg s-1 in the broad (0.5-8 keV) X-ray band (Martini et al. 2006... J accepted [18 April 2007] ABSTRACT We present a study of the distribution of AGN in clusters of galaxies... with a uniformly selected, spectroscop- ically complete sample of 35 AGN in eight clusters of ...

Source: Martini, Paul - Department of Astronomy, Ohio State University

Collection: Physics

Summary:  / 1.5 keV Hot Medium Cold WHIM at z~0.1AGNs AGNs AGNs #12;2 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 T(keV) 2 1 0... -ray forest; Hellsten et al. 1998) #12;Conventional terminology From wavelength to energy E (keV) (Å) 12... .4 Soft X-rays: 0.5-2 keV Hard X-rays: 2-10 ...

Source: Žumer, Slobodan - Department of Physics, University of Ljubljana

Collection: Materials Science ; Physics

Summary:  close to the peak around 30keV, a third population of heavily absorbed (Compton-thick) AGN... AGN: heavily obscured NH>1024 cm-2 type-I I+II all 6.4 keV Iron Line #12... ;1. the CGB at E>500 keV can basically be fully accounted for with Blazars 2. ...

Source: Boehringer, Hans - Max-Planck-Institut für extraterrestrische Physik

Collection: Physics

Summary:  X-shooter Science Verification Proposal Title: A search for buried or intrinsically weak AGN in X... .p.roberts@durham.ac.uk Abstract: It is usually assumed that any galaxy with Lx > 1042 erg/s is an AGN rather than a starburst... ergs/s). Here we select 4 galaxies for a pilot study, to search for the presence of AGN. Although

Source: Liske, Jochen - European Southern Observatory

Collection: Physics

Summary:  , and at cosmological distances AGN are routinely selected from deep X-ray (< 10 keV) exposures ([8]). Highly obscured... cm-2 ) AGN being missed by current deep X-ray (< 10 keV) observations. We based our selection... The quest for obscured AGN at cosmological distances: Infrared ...

Source: Alonso Herrero, Almudena - Departamento de Astrofisica Molecular e Infrarroja, Instituto de Estructura de la Materia, Consejo Superior de Investigaciones Cientificas

Collection: Physics

Summary:  -ray Correlation in AGN 3 41 42 43 44 45 log lL l at 12.5 µm [erg/s] 41 42 43 44 45 log L 2­10kev [erg/s] Data... The Dispersion of the MIR { Hard X-ray Correlation in AGN Hannes Horst 1;2 , Alain Smette 1... :5#22;m IR photometry (MIR) of 8 AGN, obtained with VISIR on the VLT and study the dispersion

Source: Gandhi, Poshak - Institute of Astronomy, University of Cambridge

Collection: Physics

Summary:  with Chandra that are sufficiently sensitive to detect AGN with hard X-ray luminosities of LX [2-10keV] ¢ 1042... Observatories: http://www.ociw.edu/ociw/symposia/series/symposium3/proceedings.html) New Results on the AGN... Galactic Nuclei (AGN). Comparison of these X-ray observations with ground-based ...

Source: Martini, Paul - Department of Astronomy, Ohio State University

Collection: Physics

Summary:  resolved high-resolution X-ray spectroscopy of the `ionization cone' in any AGN, and use the sensitive line... : individual (NGC 1068) ­ X-rays: galaxies PACS: 98.54.-h, 98.62.Js OVERVIEW: THE ROLE OF AGN OUTFLOWS... IN GALAXY EVOLUTION Outflows and feedback from AGN are widely invoked as the key mediator between the co

Source: Evans, Daniel A. - Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology (MIT)

Collection: Physics

Summary:  · INTEGRAL Survey: similar to BAT (20 ­ 100 keV) (Bassani et al. 2011) #12;16 Other AGN Samples (Shallow... )2 + 1 At high z: #12;3 Observations of Active Galactic Nuclei (AGN) · General Characteristics... · History · AGN Terminology · AGN Surveys and Samples #12;4 ...

Source: Crenshaw, Michael - Department of Physics and Astronomy, Georgia State University

Collection: Physics

Summary:  ­10 keV flux observed with Ginga, was also directly #12;AGN Broad-Line Region Geometry 5 0 2 4 6 8 10 12... style emulateapj v. 03/07/07 NGC 5548: THE AGN ENERGY BUDGET PROBLEM AND THE GEOMETRY OF THE BROAD... of other AGNs implies that the internal reddening of NGC 5548 is E(B-V) = 0.17 mag. The extinction ...

Source: Gaskell, Martin - Department of Astronomy, University of Texas at Austin

Collection: Physics

Summary:  -thick AGNs Fluxa Source Name J2000.0 b (deg) J2000.0 b (deg) Total Counts (0.3­8 keV) 0.3­8 keV 0.3­2.5 keV 2... -thick) AGNs, estimate a lower limit to their surface density, and characterize their multiwavelength... densities k1024 cmÀ2 and (2) 120 infrared sources with red and ...

Source: Kim, Dong-Woo - Harvard-Smithsonian Center for Astrophysics

Collection: Physics

Summary:  -dominated. For jet-dominated sources, I show that a hidden AGN component, obscured by a torus, is not excluded... .1.4 Relativistic motion and beaming . . . . . . . . . . . . . . . . . . . . . . 5 1.2 A Taxonomy of AGN... .3 Unication Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 1.4 Powering AGN

Source: Evans, Daniel A. - Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology (MIT)

Collection: Physics

Summary:  observations of AGN. This study focused on the soft band (0.2-2 keV) in order to incorporate the soft ROSAT... X-ray Spectral Evolution of AGN G. Chartas Department of Astronomy & Astrophysics, Penn State... of active galactic nuclei (AGN). One of the goals of these studies is to search for changes of the ...

Source: Chartas, George - Department of Astronomy and Astrophysics, Pennsylvania State University

Collection: Physics

Summary:  al. 2004), and any source with L0.5-8keV > 1×1041 ergs-1 is likely to be an AGN (see Figure 7... (Gray et al. in prep.). The redshift of the super- cluster AGN (0.17) means that the observed 0.5­7.5 keV... .1. The area of the AGN symbols is proportional to log(LX ...

Source: Best, Philip - Institute for Astronomy, Royal Observatory Edinburgh, University of Edinburgh

Collection: Physics

Summary:  production in AGN Neutral Iron · K shell electron absorbs a > 7.1 keV X- ray. · An electron drops from the L... . · Sensitive to energies from 1-500 keV · First instrument to discover the 6-7 keV iron line around an AGN... to energies from .04-10 keV · ...

Source: Princeton University, Terrestrial Planet Finder Project

Collection: Engineering

Summary:  .5­2.0 keV energy band. The NEP survey is centered at 2000 ¼ 18h00m, 2000 ¼ þ66 330 and covers a region... (AGNs) ($49%), either type 1 or type 2 according to the broadness of their permitted emission lines... of galaxies comprise 14%, and BL Lacertae objects 2%. One non-AGN galaxy and one planetary nebula have also

Source: Boehringer, Hans - Max-Planck-Institut für extraterrestrische Physik

Collection: Physics

Summary:  1 Introduction to AGN · General Characteristics · History · Components of AGN · The AGN Zoo #12... ;2 AGN ­ What are they? Active galactic nucleus ­ compact object in the gravitational center of a galaxy... that shows evidence for a strong nonstellar continuum AGN are characterized ...

Source: Crenshaw, Michael - Department of Physics and Astronomy, Georgia State University

Collection: Physics

Summary:  inner accretion disks in AGN. Although the primary feature has a rest-frame energy of 6.4-6.7 keV (Fe K... . The redshift of AGN at FX ~ 10-14 (2-8keV) spans the range 0AGN. Although the primary feature ...

Source: Garcia, Michael - Harvard-Smithsonian Center for Astrophysics

Collection: Physics

Summary:  -ray telescope (covering 0.2-10 keV) is ideally suited for examining the continuua and iron line regions of AGN... keV up to 100 keV in AGN and GBHs) is thought to be produced by inverse Comptonization processes... list to analyze the XMM-Newton spectra of nine other radio-quiet Sy-1 ...

Source: Berkeley Illinois Maryland Association (BIMA)

Collection: Physics

Summary:  .g., Murray et al. 1995; Proga, #12; 1.5 2 2.5 3 3.5 4 100 200 300 Fe Ca Ar S 4.5 5 5.5 6 6.5 7 7.5 0 20 40 60... of the outflow. INTRODUCTION Outflows are observed to be ubiquitous in active galactic nuclei (AGN), being seen... by radiation pressure. Despite their ubiquity and importance, their physical location and origin in ...

Source: Brandt, William Nielsen - Department of Astronomy and Astrophysics, Pennsylvania State University

Collection: Physics

Summary:  and unification · Multifrequency detection of nuclear activity · Classification of AGN · Unification · Evidence... for obscuring tori in AGN Lecture 2: The standard model · Basic concepts of the standard model of AGN · Evidence... for the presence of supermassive BHs in AGN · The role of accretion · ...

Source: Aretxaga, Itziar - Instituto Nacional de Astrofísica Óptica y Electrónica

Collection: Physics

Summary:  of a sample of Type-2 AGN that were selected on the basis of their [2­10] keV X-ray luminosity. We find... a sample of hard X-ray selected ([2­10] keV band) Type-2 AGN (i.e. those without a bright op- tical quasar... The dependence of X-ray AGN activity on host galaxy properties and ...

Source: Best, Philip - Institute for Astronomy, Royal Observatory Edinburgh, University of Edinburgh

Collection: Physics

Summary:  .4+353404 3.2 7.8 50.3 ... 1.10 <0.2 3.5+1.8 -1.6 1.20 40.22 S 588007004192637004 243.921677 47.186592 0... . The American Astronomical Society. All rights reserved. Printed in the U.S.A. PROBING THE BALANCE OF AGN... of the power law that best fits the 0.5­8 keV spectra, are consistent with a clear ...

Source: Green, Paul - Harvard-Smithsonian Center for Astrophysics; Kim, Dong-Woo - Harvard-Smithsonian Center for Astrophysics

Collection: Physics

Summary:  and methodologies used in analyz- ing AGN variability. We develop from #12;rst principles the basics... of cross-correlation analysis to AGN light curves. Finally, we provide a short review of recent important... (AGNs) is now a major branch of the #12;eld, enabled largely by the availability of suitable facilities

Source: Peterson, Bradley M. - Department of Astronomy, Ohio State University

Collection: Physics

Summary:  hole spin (a to 10%) Energy (keV) Constellation-X Stage IV: Spin, Jet, AGN, Galaxy Coupling #12;22M... and relatively bright X-ray sources, easily found in wide field surveys (20-40 per sq deg at Con-X flux limits... with 300 < R < 3000 for tens of thousands of sources ­ FX ~ 10-15 ergs/cm2/s ...

Source: Garcia, Michael - Harvard-Smithsonian Center for Astrophysics

Collection: Physics

Summary:  to Understanding Energy Transport in AGN Dan Evans (MIT Kavli Institute / Harvard University), Herman Marshall (MIT... of AGN in the Universe AGN have produced at least 10% of all radiative energy in the Universe since... the Big Bang Kinetic output of "radio-loud" AGN increases this to >30% The best way ...

Source: Evans, Daniel A. - Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology (MIT)

Collection: Physics

Summary:  are very likely to be active galactic nuclei (AGN), and the radial distribution shows that they are quite... clusters, and in subsequent papers in this series the dependence of the AGN population on these cluster... INTRODUCTION Studies of active galactic nuclei (AGN) host galaxies are key to understanding the physical

Source: Best, Philip - Institute for Astronomy, Royal Observatory Edinburgh, University of Edinburgh

Collection: Physics

Summary:  around 30keV . It is likely that the energy density of the absorbed AGN which would peak in the soft X... by the HEAO-1 satellite (13 80keV ) with an angular resolution of 24#2;48arcmin. 13 A di#11;use hard X... -Ray background (HXB) was detected between 3 and 50keV . 16 The main scienti#12;c goal of In.XS is ...

Source: Nowotny-Schipper Walter, Institut für Astronomie, Universität Wien

Collection: Physics

Summary:  .1±0.5 0.29 40.2 0.8 NGC 4036 0.192 --1.9 1 0.20 40.2 NGC 4419 0.255 --1.9 1 <2.43 <40.9 NGC 4450 0.245 --2... of the AGN luminosity function, and the presence of supermassive black holes (SMBHs) in nearby galaxies. A de... ­ toionization by an absorption­diluted AGN continuum (Halpern & Steiner ...

Source: Boehringer, Hans - Max-Planck-Institut für extraterrestrische Physik

Collection: Physics

Summary:  · Historical notes · Multifrequency detection of nuclear activity · Classification of AGN - taxonomy... · Unification · Evidence for obscuring tori in AGN Lecture 2: The standard model · Basic concepts... of the standard model of AGN · Evidence for the presence of supermassive BHs in AGN · The role ...

Source: Aretxaga, Itziar - Instituto Nacional de Astrofísica Óptica y Electrónica

Collection: Physics

Summary:  of these eight AGNs, namely NGC 3227, NGC 3516, and NGC 7314, were so strongly absorbed at energies 0.7 keV... of 15 type I active galactic nuclei (AGNs) observed with the high resolution X-ray gratings on board... to absorption by hot, local gas since the outflow velocity from each of these AGNs coincides ...

Source: Reynolds, Christopher S. - Department of Astronomy, University of Maryland at College Park

Collection: Physics

Summary:  March 2010 (MN LATEX style file v2.2) Swimming against the current: Simulations of central AGN evolution... present a series of three-dimensional hydrodynamical simulations of central AGN driven jets in a dynamic... of cluster gas disrupt the AGN jets, causing energy to be distributed throughout the centre of the cluster

Source: Brüggen, Marcus - School of Engineering and Science, Jacobs University Bremen

Collection: Physics

Summary:  2 predicts this low-luminosity AGN to contribute up to (2 - 6) × 10-13 erg s-1 cm-2 to the 12­20 keV... for an exposure of 30 ks each. The XIS signals from a region of radius 3 around the nucleus defined a 2­10 keV... flux of 2.1 × 10-11 erg s-1 cm-2 attributable to point sources. The 3.2­10 keV ...

Source: Gandhi, Poshak - Institute of Astronomy, University of Cambridge

Collection: Physics

Summary:  -18 cgs XEUS-II 1 Msec 0.5-2 keV, Smin=5x10-19 cgslog scale #12;AGN and the obscured Universe Model... /Chandra Absorbed AGN NGC 6240NGC 6240 QSOQSO averageaverage (Elvis et al.)(Elvis et al.) CMBCMB CIBCIB CXBCXB... COBCOB #12;Chandra Deep Field South (CDFS) 940 ksec exposure ACIS-I 64 arcmin2 Smin = 6*10-17 0.3-1 ...

Source: Boller, Thomas - Max-Planck Institut für extraterrestrische Physik

Collection: Physics

Summary:  our view. ROSAT has shown that, while unabsorbed AGN dominate the soft (0.1­2 keV) CXRB (Hasinger et... al. 1998), the high energy CXRB spectrum (2­30 keV) is harder than that of known AGN (Gilli et al... MP) is to investigate the evolution of Active Galactic Nuclei (AGN) and quasars by ...

Source: Harvard-Smithsonian Center for Astrophysics, ChaMP (Chandra Multiwavelength Project)

Collection: Physics

Summary:  from the AGN component dominates at hard X-ray energies but is truncated at 1­2 keV by heavy neutral... of the iron Ka line. The implied ratio of 1­10 keV X-ray luminosity to bolometric luminosity, , is typical... that the bolometric luminosity is dominated by the active galactic nucleus (AGN). Our ...

Source: Reynolds, Christopher S. - Department of Astronomy, University of Maryland at College Park

Collection: Physics

Summary:  +4446 29.8 01237 14 16 28.8 +44 46 40.8 1999 Dec 02 1.24 624....................... LP 944À20 40.9 23678 03... -line active galactic nuclei (AGNs), which tend to be blue in (g*Àr*) colors. X-ray information efficiently... galaxies. Eight galaxies lacking broad-line emission have X-ray luminosities that require they host an ...

Source: Green, Paul - Harvard-Smithsonian Center for Astrophysics; Harvard-Smithsonian Center for Astrophysics, ChaMP (Chandra Multiwavelength Project); Kim, Dong-Woo - Harvard-Smithsonian Center for Astrophysics

Collection: Physics

Summary:  of our data #12; BL Lac in 2000 Cross correlation between radio bands -60 -40 -20 0 20 40 60 t [d] -1 -0... Historically the prototype of BL­Lac type of AGNs ffl Featureless, non­thermal continuum ffl Variable at ¸ 2... .6 => We might see the high­energy end of the synchrotron component out to ~ 10 keV ...

Source: Boettcher, Markus - Department of Physics and Astronomy, Ohio University

Collection: Physics

Summary:  for a blank #12;eld. Among these sources, they noted two cluster member AGN with L (0:1 2:4 keV) #24; 10 42... consistent with the cluster sequence are indeed AGN in the cluster, with L 2 10 keV ranging from 10 41 45 erg... .2) The AGN content of the z = 0:83 cluster MS1045-0321 O. ...

Source: Best, Philip - Institute for Astronomy, Royal Observatory Edinburgh, University of Edinburgh

Collection: Physics