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Title: Multi-wavelength observations of PKS 2142-75 during active and quiescent gamma-ray states

Abstract

Here, PKS 2142–75 (a.k.a. 2FGL J2147.4–7534) is a flat-spectrum radio quasar that was observed quasi-simultaneously by a suite of instruments across the electromagnetic spectrum during two flaring states in 2010 April and 2011 August as well as a quiescent state from 2011 December through 2012 January. The results of these campaigns and model spectral energy distributions (SEDs) from the active and quiescent states are presented. The SED model parameters of PKS 2142–75 indicate that the two flares of the source are created by unique physical conditions. SED studies of flat-spectrum radio quasars are beginning to indicate that there might be two types of flares, those that can be described purely by changes in the electron distribution and those that require changes in other parameters, such as the magnetic field strength or the size of the emitting region.

Authors:
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [10];  [11];  [12];  [13];  [11];  [14];  [15]
  1. The Catholic Univ. of America, Washington, D.C. (United States)
  2. ORAU/NASA Goddard Space Flight Center, Greenbelt, MD (United States); The Catholic Univ. of America, Washington, D.C. (United States); Univ. of Tasmania, Tas (Australia)
  3. Univ. of Maryland Baltimore County (UMBC) and NASA Goddard Space Flight Center, Greenbelt, MD (United States)
  4. Naval Research Lab., Washington, D.C. (United States)
  5. CSIRO Astronomy and Space Science, Narrabri, NSW (Australia)
  6. CSIRO Astronomy and Space Science, Epping, NSW (Australia)
  7. Univ. de Concepcion, Concepcion (Chile)
  8. Univ. of Tasmania, Tas (Australia)
  9. INAF/IAPS, Roma (Italy)
  10. Univ. Wurzburg, Wurzburg (Germany)
  11. Remeis Observatory & ECAP, Bamberg (Germany)
  12. Univ. of Perugia, Perugia (Italy)
  13. Nordic Optical Telescope, Santa Cruz de La Palma Santa Cruz de Tenerife (Spain)
  14. Univ. Wurzburg, Wurzburg (Germany); Remeis Observatory & ECAP, Bamberg (Germany)
  15. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1356547
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 779; Journal Issue: 2; Journal ID: ISSN 0004-637X
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; galaxies: active; gamma rays: galaxies; quasars: individual (PKS 2142–75); radio continuum: galaxies; ultraviolet: galaxies; X-rays: individual (PKS 2142–75)

Citation Formats

Dutka, Michael S., Ojha, Roopesh, Pottschmidt, Katja, Finke, Justin D., Stevens, Jamie, Edwards, Philip G., Blanchard, Jay, Lovell, James E. J., Nesci, Roberto, Kadler, Matthias, Wilms, Joern, Tosti, Gino, Pursimo, Tapio, Krauss, Felicia, Müller, Cornelia, and Gehrels, Neil. Multi-wavelength observations of PKS 2142-75 during active and quiescent gamma-ray states. United States: N. p., 2013. Web. doi:10.1088/0004-637X/779/2/174.
Dutka, Michael S., Ojha, Roopesh, Pottschmidt, Katja, Finke, Justin D., Stevens, Jamie, Edwards, Philip G., Blanchard, Jay, Lovell, James E. J., Nesci, Roberto, Kadler, Matthias, Wilms, Joern, Tosti, Gino, Pursimo, Tapio, Krauss, Felicia, Müller, Cornelia, & Gehrels, Neil. Multi-wavelength observations of PKS 2142-75 during active and quiescent gamma-ray states. United States. doi:10.1088/0004-637X/779/2/174.
Dutka, Michael S., Ojha, Roopesh, Pottschmidt, Katja, Finke, Justin D., Stevens, Jamie, Edwards, Philip G., Blanchard, Jay, Lovell, James E. J., Nesci, Roberto, Kadler, Matthias, Wilms, Joern, Tosti, Gino, Pursimo, Tapio, Krauss, Felicia, Müller, Cornelia, and Gehrels, Neil. Wed . "Multi-wavelength observations of PKS 2142-75 during active and quiescent gamma-ray states". United States. doi:10.1088/0004-637X/779/2/174. https://www.osti.gov/servlets/purl/1356547.
@article{osti_1356547,
title = {Multi-wavelength observations of PKS 2142-75 during active and quiescent gamma-ray states},
author = {Dutka, Michael S. and Ojha, Roopesh and Pottschmidt, Katja and Finke, Justin D. and Stevens, Jamie and Edwards, Philip G. and Blanchard, Jay and Lovell, James E. J. and Nesci, Roberto and Kadler, Matthias and Wilms, Joern and Tosti, Gino and Pursimo, Tapio and Krauss, Felicia and Müller, Cornelia and Gehrels, Neil},
abstractNote = {Here, PKS 2142–75 (a.k.a. 2FGL J2147.4–7534) is a flat-spectrum radio quasar that was observed quasi-simultaneously by a suite of instruments across the electromagnetic spectrum during two flaring states in 2010 April and 2011 August as well as a quiescent state from 2011 December through 2012 January. The results of these campaigns and model spectral energy distributions (SEDs) from the active and quiescent states are presented. The SED model parameters of PKS 2142–75 indicate that the two flares of the source are created by unique physical conditions. SED studies of flat-spectrum radio quasars are beginning to indicate that there might be two types of flares, those that can be described purely by changes in the electron distribution and those that require changes in other parameters, such as the magnetic field strength or the size of the emitting region.},
doi = {10.1088/0004-637X/779/2/174},
journal = {Astrophysical Journal},
number = 2,
volume = 779,
place = {United States},
year = {2013},
month = {12}
}

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Works referenced in this record:

THE SPECTRAL ENERGY DISTRIBUTION OF FERMI BRIGHT BLAZARS
journal, May 2010


FERMI LARGE AREA TELESCOPE FIRST SOURCE CATALOG
journal, May 2010

  • Abdo, A. A.; Ackermann, M.; Ajello, M.
  • The Astrophysical Journal Supplement Series, Vol. 188, Issue 2
  • DOI: 10.1088/0067-0049/188/2/405

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


Comptonization of Infrared Radiation from Hot Dust by Relativistic Jets in Quasars
journal, December 2000

  • Błażejowski, M.; Sikora, M.; Moderski, R.
  • The Astrophysical Journal, Vol. 545, Issue 1
  • DOI: 10.1086/317791

Smarts Optical and Infrared Monitoring of 12 Gamma-Ray Bright Blazars
journal, August 2012


Modeling the emission processes in blazars
journal, April 2007


The Hard VHE γ-Ray Emission in High-Redshift TeV Blazars: Comptonization of Cosmic Microwave Background Radiation in an Extended Jet?
journal, April 2008

  • Böttcher, Markus; Dermer, Charles D.; Finke, Justin D.
  • The Astrophysical Journal, Vol. 679, Issue 1
  • DOI: 10.1086/588780

An Optical-Near-Infrared Outburst with no Accompanying γ-Rays in the Blazar pks 0208–512
journal, December 2012


Long-term monitoring of PKS 0537−441 with Fermi–LAT and multiwavelength observations
journal, March 2013

  • D’Ammando, F.; Antolini, E.; Tosti, G.
  • Monthly Notices of the Royal Astronomical Society, Vol. 431, Issue 3
  • DOI: 10.1093/mnras/stt344

SBS 0846+513: a new γ-ray-emitting narrow-line Seyfert 1 galaxy: SBS 0846+513: a new γ-ray-emitting NLS1
journal, September 2012


PKS 2123−463: a confirmed γ-ray blazar at high redshift: PKS 2123−463: a γ-ray blazar at high redshift
journal, November 2012


Gamma-Ray Studies of Blazars: Synchro-Compton Analysis of flat Spectrum Radio Quasars
journal, February 2009


Infrared standard stars
journal, July 1982

  • Elias, J. H.; Frogel, J. A.; Matthews, K.
  • The Astronomical Journal, Vol. 87
  • DOI: 10.1086/113185

Synchrotron Self‐Compton Analysis of TeV X‐Ray‐Selected BL Lacertae Objects
journal, October 2008

  • Finke, Justin D.; Dermer, Charles D.; Böttcher, Markus
  • The Astrophysical Journal, Vol. 686, Issue 1
  • DOI: 10.1086/590900

Correcting for the Effects of Interstellar Extinction
journal, January 1999

  • Fitzpatrick, Edward L.
  • Publications of the Astronomical Society of the Pacific, Vol. 111, Issue 755
  • DOI: 10.1086/316293

Photometric studies of composite stellar systems. I - CO and JHK observations of E and S0 galaxies
journal, February 1978

  • Frogel, J. A.; Persson, S. E.; Matthews, K.
  • The Astrophysical Journal, Vol. 220
  • DOI: 10.1086/155883

The Swift Gamma‐Ray Burst Mission
journal, August 2004

  • Gehrels, N.; Chincarini, G.; Giommi, P.
  • The Astrophysical Journal, Vol. 611, Issue 2
  • DOI: 10.1086/422091

The transition between BL Lac objects and flat spectrum radio quasars: FSRQs and BL Lacs
journal, May 2011


Redshifts of southern radio sources. III
journal, January 1978

  • Jauncey, D. L.; Wright, A. E.; Peterson, B. A.
  • The Astrophysical Journal, Vol. 219
  • DOI: 10.1086/182595

The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections
journal, September 2005


Relativistic jets as X-ray and gamma-ray sources
journal, February 1981


Probing the Inner jet of the Quasar pks 1510–089 with Multi-Waveband Monitoring During Strong Gamma-Ray Activity
journal, February 2010

  • Marscher, Alan P.; Jorstad, Svetlana G.; Larionov, Valeri M.
  • The Astrophysical Journal, Vol. 710, Issue 2
  • DOI: 10.1088/2041-8205/710/2/L126

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

COSMIC: Microarcsecond Resolution with a 30 Meter Radio Telescope
journal, April 2005

  • McCulloch, Peter M.; Ellingsen, Simon P.; Jauncey, David L.
  • The Astronomical Journal, Vol. 129, Issue 4
  • DOI: 10.1086/428374

REM: Automatic for the People
journal, January 2010

  • Molinari, Emilio; Covino, Stefano; D'Alessio, Francesco
  • Advances in Astronomy, Vol. 2010
  • DOI: 10.1155/2010/253675

The brightest gamma-ray flares of blazars
journal, January 2013

  • Nalewajko, Krzysztof
  • Monthly Notices of the Royal Astronomical Society, Vol. 430, Issue 2
  • DOI: 10.1093/mnras/sts711

AGN Dusty Tori. I. Handling of Clumpy Media
journal, September 2008

  • Nenkova, Maia; Sirocky, Matthew M.; Ivezić, Željko
  • The Astrophysical Journal, Vol. 685, Issue 1
  • DOI: 10.1086/590482

Near-infrared and gamma-ray monitoring of TANAMI gamma-ray bright sources
journal, June 2013


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

TANAMI: tracking active galactic nuclei with austral milliarcsecond interferometry: I. First-epoch 8.4 GHz images
journal, September 2010


VERY RAPID HIGH-AMPLITUDE GAMMA-RAY VARIABILITY IN LUMINOUS BLAZAR PKS 1510–089 STUDIED WITH FERMI -LAT
journal, March 2013


Measuring Reddening with Sloan Digital sky Survey Stellar Spectra and Recalibrating sfd
journal, August 2011


Maps of Dust Infrared Emission for Use in Estimation of Reddening and Cosmic Microwave Background Radiation Foregrounds
journal, June 1998

  • Schlegel, David J.; Finkbeiner, Douglas P.; Davis, Marc
  • The Astrophysical Journal, Vol. 500, Issue 2
  • DOI: 10.1086/305772

Comptonization of diffuse ambient radiation by a relativistic jet: The source of gamma rays from blazars?
journal, January 1994

  • Sikora, Marek; Begelman, Mitchell C.; Rees, Martin J.
  • The Astrophysical Journal, Vol. 421
  • DOI: 10.1086/173633

The Two Micron All Sky Survey (2MASS)
journal, February 2006

  • Skrutskie, M. F.; Cutri, R. M.; Stiening, R.
  • The Astronomical Journal, Vol. 131, Issue 2
  • DOI: 10.1086/498708

Unified Schemes for Radio-Loud Active Galactic Nuclei
journal, June 1995

  • Urry, C. Megan; Padovani, Paolo
  • Publications of the Astronomical Society of the Pacific, Vol. 107
  • DOI: 10.1086/133630

The Wide-Field Infrared Survey Explorer (Wise): Mission Description and Initial On-Orbit Performance
journal, November 2010


    Works referencing / citing this record:

    The TANAMI Multiwavelength Program: Dynamic spectral energy distributions of southern blazars
    journal, June 2016


    TANAMI: Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry: II. Additional sources
    journal, February 2018