Search Menu
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information
Search Scholarly Publications

Title: Fermi large area telescope detection of extended gamma-ray emission from the radio galaxy fornax A

Abstract

Here, we report the Fermi Large Area Telescope detection of extended γ-ray emission from the lobes of the radio galaxy Fornax A using 6.1 years of Pass 8 data. After Centaurus A, this is now the second example of an extended γ-ray source attributed to a radio galaxy. Both an extended flat disk morphology and a morphology following the extended radio lobes were preferred over a point-source description, and the core contribution was constrained to be $$\lt 14$$% of the total γ-ray flux. We also demonstrated a preferred alignment of the γ-ray elongation with the radio lobes by rotating the radio lobes template. We found no significant evidence for variability on ~0.5 year timescales. Taken together, these results strongly suggest a lobe origin for the γ-rays. Furthermore, with the extended nature of the $$\gt 100\;{\rm{MeV}}$$ γ-ray emission established, we model the source broadband emission considering currently available total lobe radio and millimeter flux measurements, as well as X-ray detections attributed to inverse Compton (IC) emission off the cosmic microwave background (CMB). Unlike the Centaurus A case, we find that a leptonic model involving IC scattering of CMB and extragalactic background light (EBL) photons underpredicts the γ-ray fluxes by factors of about ~2–3, depending on the EBL model adopted. An additional γ-ray spectral component is thus required, and could be due to hadronic emission arising from proton–proton collisions of cosmic rays with thermal plasma within the radio lobes.

Authors:
; ORCiD logo; ; ORCiD logo; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ORCiD logo; ORCiD logo; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ORCiD logo; ; ; ; ; ; ; ; ; ; ; ORCiD logo; ; ; ; ; ; ; ; ; ; ; ORCiD logo; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ORCiD logo; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ORCiD logo; ; ORCiD logo; ; ; ; ; ; ; ORCiD logo; ; ; « less
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE; National Aeronautics and Space Administration (NASA); Alternative Energies and Atomic Energy Commission (CEA)
Contributing Org.:
Fermi LAT Collaboration
OSTI Identifier:
1355705
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal (Online); Journal Volume: 826; Journal Issue: 1; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; galaxies: active; galaxies: individual (Fornax A); galaxies: jets; gamma rays: galaxies; radiation mechanisms: non-thermal

Citation Formats

Ackermann, M., Ajello, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R., Bissaldi, E., Blandford, R. D., Bloom, E. D., Bonino, R., Brandt, T. J., Bregeon, J., Bruel, P., Buehler, R., Buson, S., Caliandro, G. A., Cameron, R. A., Caragiulo, M., Caraveo, P. A., Cavazzuti, E., Cecchi, C., Charles, E., Chekhtman, A., Cheung, C. C., Chiaro, G., Ciprini, S., Cohen, J. M., Cohen-Tanugi, J., Costanza, F., Cutini, S., D’Ammando, F., Davis, D. S., Angelis, A. de, Palma, F. de, Desiante, R., Digel, S. W., Lalla, N. Di, Mauro, M. Di, Venere, L. Di, Favuzzi, C., Fegan, S. J., Ferrara, E. C., Focke, W. B., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Georganopoulos, M., Giglietto, N., Giordano, F., Giroletti, M., Godfrey, G., Green, D., Grenier, I. A., Guiriec, S., Hays, E., Hewitt, J. W., Hill, A. B., Jogler, T., Jóhannesson, G., Kensei, S., Kuss, M., Larsson, S., Latronico, L., Li, J., Li, L., Longo, F., Loparco, F., Lubrano, P., Magill, J. D., Maldera, S., Manfreda, A., Mayer, M., Mazziotta, M. N., McConville, W., McEnery, J. E., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Negro, M., Nuss, E., Ohno, M., Ohsugi, T., Orienti, M., Orlando, E., Ormes, J. F., Paneque, D., Perkins, J. S., Pesce-Rollins, M., Piron, F., Pivato, G., Porter, T. A., Rainò, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Schmid, J., Sgrò, C., Simone, D., Siskind, E. J., Spada, F., Spandre, G., Spinelli, P., Stawarz, Ł., Takahashi, H., Thayer, J. B., Thompson, D. J., Torres, D. F., Tosti, G., Troja, E., Vianello, G., Wood, K. S., Wood, M., and Zimmer, S. Fermi large area telescope detection of extended gamma-ray emission from the radio galaxy fornax A. United States: N. p., 2016. Web. doi:10.3847/0004-637X/826/1/1.
Copy to clipboard
Ackermann, M., Ajello, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R., Bissaldi, E., Blandford, R. D., Bloom, E. D., Bonino, R., Brandt, T. J., Bregeon, J., Bruel, P., Buehler, R., Buson, S., Caliandro, G. A., Cameron, R. A., Caragiulo, M., Caraveo, P. A., Cavazzuti, E., Cecchi, C., Charles, E., Chekhtman, A., Cheung, C. C., Chiaro, G., Ciprini, S., Cohen, J. M., Cohen-Tanugi, J., Costanza, F., Cutini, S., D’Ammando, F., Davis, D. S., Angelis, A. de, Palma, F. de, Desiante, R., Digel, S. W., Lalla, N. Di, Mauro, M. Di, Venere, L. Di, Favuzzi, C., Fegan, S. J., Ferrara, E. C., Focke, W. B., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Georganopoulos, M., Giglietto, N., Giordano, F., Giroletti, M., Godfrey, G., Green, D., Grenier, I. A., Guiriec, S., Hays, E., Hewitt, J. W., Hill, A. B., Jogler, T., Jóhannesson, G., Kensei, S., Kuss, M., Larsson, S., Latronico, L., Li, J., Li, L., Longo, F., Loparco, F., Lubrano, P., Magill, J. D., Maldera, S., Manfreda, A., Mayer, M., Mazziotta, M. N., McConville, W., McEnery, J. E., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Negro, M., Nuss, E., Ohno, M., Ohsugi, T., Orienti, M., Orlando, E., Ormes, J. F., Paneque, D., Perkins, J. S., Pesce-Rollins, M., Piron, F., Pivato, G., Porter, T. A., Rainò, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Schmid, J., Sgrò, C., Simone, D., Siskind, E. J., Spada, F., Spandre, G., Spinelli, P., Stawarz, Ł., Takahashi, H., Thayer, J. B., Thompson, D. J., Torres, D. F., Tosti, G., Troja, E., Vianello, G., Wood, K. S., Wood, M., & Zimmer, S. Fermi large area telescope detection of extended gamma-ray emission from the radio galaxy fornax A. United States. https://doi.org/10.3847/0004-637X/826/1/1
Copy to clipboard
Ackermann, M., Ajello, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R., Bissaldi, E., Blandford, R. D., Bloom, E. D., Bonino, R., Brandt, T. J., Bregeon, J., Bruel, P., Buehler, R., Buson, S., Caliandro, G. A., Cameron, R. A., Caragiulo, M., Caraveo, P. A., Cavazzuti, E., Cecchi, C., Charles, E., Chekhtman, A., Cheung, C. C., Chiaro, G., Ciprini, S., Cohen, J. M., Cohen-Tanugi, J., Costanza, F., Cutini, S., D’Ammando, F., Davis, D. S., Angelis, A. de, Palma, F. de, Desiante, R., Digel, S. W., Lalla, N. Di, Mauro, M. Di, Venere, L. Di, Favuzzi, C., Fegan, S. J., Ferrara, E. C., Focke, W. B., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Georganopoulos, M., Giglietto, N., Giordano, F., Giroletti, M., Godfrey, G., Green, D., Grenier, I. A., Guiriec, S., Hays, E., Hewitt, J. W., Hill, A. B., Jogler, T., Jóhannesson, G., Kensei, S., Kuss, M., Larsson, S., Latronico, L., Li, J., Li, L., Longo, F., Loparco, F., Lubrano, P., Magill, J. D., Maldera, S., Manfreda, A., Mayer, M., Mazziotta, M. N., McConville, W., McEnery, J. E., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Negro, M., Nuss, E., Ohno, M., Ohsugi, T., Orienti, M., Orlando, E., Ormes, J. F., Paneque, D., Perkins, J. S., Pesce-Rollins, M., Piron, F., Pivato, G., Porter, T. A., Rainò, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Schmid, J., Sgrò, C., Simone, D., Siskind, E. J., Spada, F., Spandre, G., Spinelli, P., Stawarz, Ł., Takahashi, H., Thayer, J. B., Thompson, D. J., Torres, D. F., Tosti, G., Troja, E., Vianello, G., Wood, K. S., Wood, M., and Zimmer, S. Thu . "Fermi large area telescope detection of extended gamma-ray emission from the radio galaxy fornax A". United States. https://doi.org/10.3847/0004-637X/826/1/1. https://www.osti.gov/servlets/purl/1355705.
Copy to clipboard
@article{osti_1355705,
title = {Fermi large area telescope detection of extended gamma-ray emission from the radio galaxy fornax A},
author = {Ackermann, M. and Ajello, M. and Baldini, L. and Ballet, J. and Barbiellini, G. and Bastieri, D. and Bellazzini, R. and Bissaldi, E. and Blandford, R. D. and Bloom, E. D. and Bonino, R. and Brandt, T. J. and Bregeon, J. and Bruel, P. and Buehler, R. and Buson, S. and Caliandro, G. A. and Cameron, R. A. and Caragiulo, M. and Caraveo, P. A. and Cavazzuti, E. and Cecchi, C. and Charles, E. and Chekhtman, A. and Cheung, C. C. and Chiaro, G. and Ciprini, S. and Cohen, J. M. and Cohen-Tanugi, J. and Costanza, F. and Cutini, S. and D’Ammando, F. and Davis, D. S. and Angelis, A. de and Palma, F. de and Desiante, R. and Digel, S. W. and Lalla, N. Di and Mauro, M. Di and Venere, L. Di and Favuzzi, C. and Fegan, S. J. and Ferrara, E. C. and Focke, W. B. and Fukazawa, Y. and Funk, S. and Fusco, P. and Gargano, F. and Gasparrini, D. and Georganopoulos, M. and Giglietto, N. and Giordano, F. and Giroletti, M. and Godfrey, G. and Green, D. and Grenier, I. A. and Guiriec, S. and Hays, E. and Hewitt, J. W. and Hill, A. B. and Jogler, T. and Jóhannesson, G. and Kensei, S. and Kuss, M. and Larsson, S. and Latronico, L. and Li, J. and Li, L. and Longo, F. and Loparco, F. and Lubrano, P. and Magill, J. D. and Maldera, S. and Manfreda, A. and Mayer, M. and Mazziotta, M. N. and McConville, W. and McEnery, J. E. and Michelson, P. F. and Mitthumsiri, W. and Mizuno, T. and Monzani, M. E. and Morselli, A. and Moskalenko, I. V. and Murgia, S. and Negro, M. and Nuss, E. and Ohno, M. and Ohsugi, T. and Orienti, M. and Orlando, E. and Ormes, J. F. and Paneque, D. and Perkins, J. S. and Pesce-Rollins, M. and Piron, F. and Pivato, G. and Porter, T. A. and Rainò, S. and Rando, R. and Razzano, M. and Reimer, A. and Reimer, O. and Schmid, J. and Sgrò, C. and Simone, D. and Siskind, E. J. and Spada, F. and Spandre, G. and Spinelli, P. and Stawarz, Ł. and Takahashi, H. and Thayer, J. B. and Thompson, D. J. and Torres, D. F. and Tosti, G. and Troja, E. and Vianello, G. and Wood, K. S. and Wood, M. and Zimmer, S.},
abstractNote = {Here, we report the Fermi Large Area Telescope detection of extended γ-ray emission from the lobes of the radio galaxy Fornax A using 6.1 years of Pass 8 data. After Centaurus A, this is now the second example of an extended γ-ray source attributed to a radio galaxy. Both an extended flat disk morphology and a morphology following the extended radio lobes were preferred over a point-source description, and the core contribution was constrained to be $\lt 14$% of the total γ-ray flux. We also demonstrated a preferred alignment of the γ-ray elongation with the radio lobes by rotating the radio lobes template. We found no significant evidence for variability on ~0.5 year timescales. Taken together, these results strongly suggest a lobe origin for the γ-rays. Furthermore, with the extended nature of the $\gt 100\;{\rm{MeV}}$ γ-ray emission established, we model the source broadband emission considering currently available total lobe radio and millimeter flux measurements, as well as X-ray detections attributed to inverse Compton (IC) emission off the cosmic microwave background (CMB). Unlike the Centaurus A case, we find that a leptonic model involving IC scattering of CMB and extragalactic background light (EBL) photons underpredicts the γ-ray fluxes by factors of about ~2–3, depending on the EBL model adopted. An additional γ-ray spectral component is thus required, and could be due to hadronic emission arising from proton–proton collisions of cosmic rays with thermal plasma within the radio lobes.},
doi = {10.3847/0004-637X/826/1/1},
journal = {The Astrophysical Journal (Online)},
number = 1,
volume = 826,
place = {United States},
year = {Thu Jul 14 00:00:00 EDT 2016},
month = {Thu Jul 14 00:00:00 EDT 2016}
}
Copy to clipboard
Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.3847/0004-637X/826/1/1
Copyright Statement
Other availability
Search WorldCat Search WorldCat to find libraries that may hold this journal
Citation Metrics:
Cited by: 33 works
Citation information provided by
Web of Science

Figures / Tables:

Fig. 1 Fig. 1: Relative smoothed (4.7 px, 0.◦24 Gaussian FWHM) residual $γ$-ray counts ((counts - model)/model) in the 1.◦5 square region around the core of Fornax A between 1 and 300 GeV. Overlaid are the radio contours (gray lines) from the VLA observations of Fomalont et al. (1989) with the radiomore » core (position indicated by A) subtracted. The $γ$-ray residual counts are elongated in a similar way to the radio lobes. Also shown are the 95% confidence error ellipses for 2FGL J0322.4−3717 and 3FGL J0322.5−3721; the 3FGL source has the smaller ellipse. The dashed circle shows the 95% confidence error circle from our maximum-likelihood localization of the region as a single point source centered at position B. The other points (labeled C, D, E) are the locations of various sources and test sources, as detailed in the text and in Table 1.« less
All figures and tables (6 total)
Save / Share:
Export Metadata
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.

Works referenced in this record:

Fermi Gamma-Ray Imaging of a Radio Galaxy
journal, April 2010

Constraints on the gamma-ray emission from the cluster-scale AGN outburst in the Hydra A galaxy cluster
journal, September 2012

FERMI LARGE AREA TELESCOPE THIRD SOURCE CATALOG
journal, June 2015

  • Acero, F.; Ackermann, M.; Ajello, M.
  • The Astrophysical Journal Supplement Series, Vol. 218, Issue 2
  • DOI: 10.1088/0067-0049/218/2/23

Search for Cosmic-Ray-Induced Gamma-Ray Emission in Galaxy Clusters
journal, April 2014

The Imprint of the Extragalactic Background Light in the Gamma-Ray Spectra of Blazars
journal, November 2012

THE THIRD CATALOG OF ACTIVE GALACTIC NUCLEI DETECTED BY THE FERMI LARGE AREA TELESCOPE
journal, August 2015

Fermi-LAT constraints on dark matter annihilation cross section from observations of the Fornax cluster
journal, July 2012

THE LARGE AREA TELESCOPE ON THE FERMI GAMMA-RAY SPACE TELESCOPE MISSION
journal, May 2009

The Structure of Bright Galaxies at 408 MHz
journal, July 1971

Stacking Searches for Gamma‐Ray Emission above 100 MeV from Radio and Seyfert Galaxies
journal, January 2004

  • Cillis, A. N.; Hartman, R. C.; Bertsch, D. L.
  • The Astrophysical Journal, Vol. 601, Issue 1
  • DOI: 10.1086/380482

An X‐Ray Study of Magnetic Field Strengths and Particle Content in the Lobes of FR II Radio Sources
journal, June 2005

  • Croston, J. H.; Hardcastle, M. J.; Harris, D. E.
  • The Astrophysical Journal, Vol. 626, Issue 2
  • DOI: 10.1086/430170

Discovery of Inverse-Compton X-Rays in Radio Lobes
journal, August 1995

  • Feigelson, E. D.; Laurent-Muehleisen, S. A.; Kollgaard, R. I.
  • The Astrophysical Journal, Vol. 449, Issue 2
  • DOI: 10.1086/309642

Modeling the Extragalactic Background Light from Stars and dust
journal, February 2010

Depolarization silhouettes and the filamentary structure in the radio source Fornax A
journal, November 1989

  • Fomalont, Edward B.; Ebneter, Kathleen A.; van Breugel, Wil J. M.
  • The Astrophysical Journal, Vol. 346
  • DOI: 10.1086/185568

Radio observations of the jet in Fornax A
journal, November 1984

  • Geldzahler, B. J.; Fomalont, E. B.
  • The Astronomical Journal, Vol. 89
  • DOI: 10.1086/113668

A Novel Method for Measuring the Extragalactic Background Light: Fermi Application to the Lobes of Fornax A
journal, September 2008

  • Georganopoulos, Markos; Sambruna, Rita M.; Kazanas, Demosthenes
  • The Astrophysical Journal, Vol. 686, Issue 1
  • DOI: 10.1086/592833

The prospects for X-ray detection of inverse-Compton emission from radio source electrons and photons of the microwave background
journal, September 1979

  • Harris, D. E.; Grindlay, J. E.
  • Monthly Notices of the Royal Astronomical Society, Vol. 188, Issue 1
  • DOI: 10.1093/mnras/188.1.25

Three‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Temperature Analysis
journal, June 2007

  • Hinshaw, G.; Nolta, M. R.; Bennett, C. L.
  • The Astrophysical Journal Supplement Series, Vol. 170, Issue 2
  • DOI: 10.1086/513698

The XMM‐Newton Examination of Energetics in the East Lobe of the Nearby Radio Galaxy Fornax A (NGC 1316)
journal, July 2006

  • Isobe, N.; Makishima, K.; Tashiro, M.
  • The Astrophysical Journal, Vol. 645, Issue 1
  • DOI: 10.1086/504253

Suzaku Measurement of Electron and Magnetic Energy Densities in the East Lobe of the Giant Radio Galaxy DA 240
journal, November 2011

  • Isobe, Naoki; Seta, Hiromi; Tashiro, Makoto S.
  • Publications of the Astronomical Society of Japan, Vol. 63, Issue sp3
  • DOI: 10.1093/pasj/63.sp3.S947

The structure of southern extragalactic radio sources
journal, May 1992

  • Jones, Paul A.; McAdam, W. B.
  • The Astrophysical Journal Supplement Series, Vol. 80
  • DOI: 10.1086/191662

Detection of Inverse-Compton X-Rays from Lobes of the Radio Galaxy Fornax A
journal, November 1995

  • Kaneda,, H.; Tashiro,, M.; Ikebe,, Y.
  • The Astrophysical Journal, Vol. 453, Issue 1
  • DOI: 10.1086/309742

X‐Ray Emission Properties of Large‐Scale Jets, Hot Spots, and Lobes in Active Galactic Nuclei
journal, April 2005

  • Kataoka, Jun; Stawarz, Łukasz
  • The Astrophysical Journal, Vol. 622, Issue 2
  • DOI: 10.1086/428083

Fermi -LAT and Suzaku observations of the radio galaxy Centaurus B
journal, January 2013

Chandra X‐Ray Observations of NGC 1316 (Fornax A)
journal, April 2003

  • Kim, Dong‐Woo; Fabbiano, G.
  • The Astrophysical Journal, Vol. 586, Issue 2
  • DOI: 10.1086/367930

SEARCH FOR SPATIALLY EXTENDED FERMI LARGE AREA TELESCOPE SOURCES USING TWO YEARS OF DATA
journal, August 2012

Constraining the Outburst Properties of the smbh in Fornax a Through X-Ray, Infrared, and Radio Observations
journal, September 2010

The Hubble Space Telescope Key Project on the Extragalactic Distance Scale. XV. A Cepheid Distance to the Fornax Cluster and Its Implications
journal, April 1999

  • Madore, Barry F.; Freedman, Wendy L.; Silbermann, N.
  • The Astrophysical Journal, Vol. 515, Issue 1
  • DOI: 10.1086/307004

The Likelihood Analysis of EGRET Data
journal, April 1996

  • Mattox, J. R.; Bertsch, D. L.; Chiang, J.
  • The Astrophysical Journal, Vol. 461
  • DOI: 10.1086/177068

Modelling of the spectral energy distribution of Fornax A: leptonic and hadronic production of high-energy emission from the radio lobes
journal, December 2014

  • McKinley, B.; Yang, R.; López-Caniego, M.
  • Monthly Notices of the Royal Astronomical Society, Vol. 446, Issue 4
  • DOI: 10.1093/mnras/stu2310

A Catalogue of Radio Sources Between Declinations ?20° and ?50°
journal, January 1960

  • Mills, By; Slee, Ob; Hill, Er
  • Australian Journal of Physics, Vol. 13, Issue 4
  • DOI: 10.1071/PH600676

FERMI LARGE AREA TELESCOPE SECOND SOURCE CATALOG
journal, March 2012

  • Nolan, P. L.; Abdo, A. A.; Ackermann, M.
  • The Astrophysical Journal Supplement Series, Vol. 199, Issue 2
  • DOI: 10.1088/0067-0049/199/2/31

Thermal Plasma in the Giant Lobes of the Radio Galaxy Centaurus a
journal, February 2013

  • O'Sullivan, S. P.; Feain, I. J.; McClure-Griffiths, N. M.
  • The Astrophysical Journal, Vol. 764, Issue 2
  • DOI: 10.1088/0004-637X/764/2/162

Suzaku Detection of Thermal X-Ray Emission Associated with the Western Radio Lobe of Fornax A
journal, October 2013

  • Seta, Hiromi; Tashiro, Makoto S.; Inoue, Susumu
  • Publications of the Astronomical Society of Japan, Vol. 65, Issue 5
  • DOI: 10.1093/pasj/65.5.106

The new event analysis of the Fermi large area telescope
conference, July 2014

  • Sgrò, Carmelo
  • SPIE Astronomical Telescopes + Instrumentation, SPIE Proceedings
  • DOI: 10.1117/12.2057036

GIANT LOBES OF CENTAURUS A RADIO GALAXY OBSERVED WITH THE SUZAKU X-RAY SATELLITE
journal, March 2013

TeV gamma rays from 3C 279 - A possible probe of origin and intergalactic infrared radiation fields
journal, May 1992

  • Stecker, F. W.; de Jager, O. C.; Salamon, M. H.
  • The Astrophysical Journal, Vol. 390
  • DOI: 10.1086/186369

SUZAKU X-RAY IMAGING OF THE EXTENDED LOBE IN THE GIANT RADIO GALAXY NGC 6251 ASSOCIATED WITH THE FERMI -LAT SOURCE 2FGL J1629.4+8236
journal, March 2012

Hard X-Ray Spectrum from West Lobe of Radio Galaxy Fornax A Observed with Suzaku
journal, January 2009

  • Tashiro, Makoto S.; Isobe, Naoki; Seta, Hiromi
  • Publications of the Astronomical Society of Japan, Vol. 61, Issue sp1
  • DOI: 10.1093/pasj/61.sp1.S327
    Sort by:
    [ × clear filter / sort ]

    Works referencing / citing this record:

    Fermi-LAT observation of nonblazar AGNs
    journal, June 2018

    The flickering nuclear activity of Fornax A
    journal, January 2020

    Non-thermal emission in radio galaxy lobes – II. Centaurus A, Centaurus B, and NGC 6251
    journal, September 2019

    • Persic, Massimo; Rephaeli, Yoel
    • Monthly Notices of the Royal Astronomical Society, Vol. 490, Issue 2
    • DOI: 10.1093/mnras/stz2527

    Non-thermal emission in the lobes of Fornax A
    journal, February 2019

    • Persic, Massimo; Rephaeli, Yoel
    • Monthly Notices of the Royal Astronomical Society, Vol. 485, Issue 2
    • DOI: 10.1093/mnras/stz511

    Fermi-LAT observations of extreme spectral variability in IC 310
    journal, February 2019

    • Graham, Jamie A.; Brown, Anthony M.; Chadwick, Paula M.
    • Monthly Notices of the Royal Astronomical Society, Vol. 485, Issue 3
    • DOI: 10.1093/mnras/stz588

    Fornax A, Centaurus A, and other radio galaxies as sources of ultrahigh energy cosmic rays
    journal, June 2018

    • Matthews, J. H.; Bell, A. R.; Blundell, K. M.
    • Monthly Notices of the Royal Astronomical Society: Letters, Vol. 479, Issue 1
    • DOI: 10.1093/mnrasl/sly099

    Broadband Radio Polarimetry of Fornax A. I. Depolarized Patches Generated by Advected Thermal Material from NGC 1316
    journal, March 2018

    • Anderson, C. S.; Gaensler, B. M.; Heald, G. H.
    • The Astrophysical Journal, Vol. 855, Issue 1
    • DOI: 10.3847/1538-4357/aaaec0

    Examining the High-energy Radiation Mechanisms of Knots and Hotspots in Active Galactic Nucleus Jets
    journal, April 2018

    Microphysics of KCl and ZnS Clouds on GJ 1214 b
    journal, August 2018

    Jet Radiation Properties of 4C +49.22: from the Core to Large-scale Knots
    journal, September 2018

    The Circinus Galaxy Revisited with 10 yr Fermi -LAT Data
    journal, November 2019

    • Guo, Xiao-Lei; Xin, Yu-Liang; Liao, Neng-Hui
    • The Astrophysical Journal, Vol. 885, Issue 2
    • DOI: 10.3847/1538-4357/ab44ba

    3FHL: The Third Catalog of Hard Fermi -LAT Sources
    journal, September 2017

    • Ajello, M.; Atwood, W. B.; Baldini, L.
    • The Astrophysical Journal Supplement Series, Vol. 232, Issue 2
    • DOI: 10.3847/1538-4365/aa8221

    Fermi Large Area Telescope Fourth Source Catalog
    journal, March 2020

    • Abdollahi, S.; Acero, F.; Ackermann, M.
    • The Astrophysical Journal Supplement Series, Vol. 247, Issue 1
    • DOI: 10.3847/1538-4365/ab6bcb

    Fermi Large Area Telescope Fourth Source Catalog
    text, January 2020

    • Abdollahi, S.; Acero, F.; Ackermann, Markus
    • Deutsches Elektronen-Synchrotron, DESY, Hamburg
    • DOI: 10.3204/pubdb-2020-01400

    Fornax A, Centaurus A, and other radio galaxies as sources of ultrahigh energy cosmic rays
    text, January 2018

    • Matthews, James; Bell, Ar; Blundell, Km
    • Apollo - University of Cambridge Repository
    • DOI: 10.17863/cam.46902

    3FHL: The Third Catalog of Hard Fermi -LAT Sources
    text, January 2017

    Fermi Large Area Telescope Fourth Source Catalog
    collection, January 2020

    3FHL: The Third Catalog of Hard Fermi-LAT Sources
    text, January 2017

    Fermi-LAT Observation of Non-Blazar AGNs
    text, January 2018

    The flickering nuclear activity of Fornax A
    text, January 2019

      Sort by:
      [ × clear filter / sort ]

      Figures / Tables found in this record:

      Fig. 1 (p. 5)figure
      Fig. 2 (p. 6)figure
      TABLE 1 (p. 7)table
      TABLE 2 (p. 7)table
      Fig. 3 (p. 8)figure
      TABLE 3 (p. 9)table
        [ × clear filter / sort ]
        Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.

        Similar Records in DOE PAGES and OSTI.GOV collections: