FERMI LARGE AREA TELESCOPE GAMMA-RAY DETECTION OF THE RADIO GALAXY M87

Abdo, A A; Ackermann, M; Ajello, M; Bechtol, K; Berenji, B; Blandford, R D; Bloom, E D; Borgland, A W; Atwood, W B; Axelsson, M; Baldini, L; Bellazzini, R; Bregeon, J; Brez, A; Ballet, J; Barbiellini, G; Bastieri, D; Bonamente, E; Brigida, M; Bruel, P

doi:10.1088/0004-637X/707/1/55

FERMI LARGE AREA TELESCOPE GAMMA-RAY DETECTION OF THE RADIO GALAXY M87

Journal Article · Thu Dec 10 04:00:00 EST 2009 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/707/1/55· OSTI ID:21389341

Abdo, A A ^[1]; Ackermann, M; Ajello, M; Bechtol, K; Berenji, B; Blandford, R D; Bloom, E D; Borgland, A W ^[2]; Atwood, W B ^[3]; Axelsson, M ^[4]; Baldini, L; Bellazzini, R; Bregeon, J; Brez, A ^[5]; Ballet, J ^[6]; Barbiellini, G ^[7]; Bastieri, D ^[8]; Bonamente, E ^[9]; Brigida, M ^[10]; Bruel, P ^[11]

Space Science Division, Naval Research Laboratory, Washington, DC 20375 (United States)
W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305 (United States)
Santa Cruz Institute for Particle Physics, Department of Physics and Department of Astronomy and Astrophysics, University of California at Santa Cruz, Santa Cruz, CA 95064 (United States)
Department of Astronomy, Stockholm University, SE-106 91 Stockholm (Sweden)
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, I-56127 Pisa (Italy)
Laboratoire AIM, CEA-IRFU/CNRS/Universite Paris Diderot, Service d'Astrophysique, CEA Saclay, 91191 Gif sur Yvette (France)
Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, I-34127 Trieste (Italy)
Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova (Italy)
Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, I-06123 Perugia (Italy)
Dipartimento di Fisica 'M. Merlin' dell'Universita e del Politecnico di Bari, I-70126 Bari (Italy)
Laboratoire Leprince-Ringuet, Ecole polytechnique, CNRS/IN2P3, Palaiseau (France)

We report the Fermi Large Area Telescope (LAT) discovery of high-energy (MeV/GeV) gamma-ray emission positionally consistent with the center of the radio galaxy M87, at a source significance of over 10sigma in 10 months of all-sky survey data. Following the detections of Cen A and Per A, this makes M87 the third radio galaxy seen with the LAT. The faint point-like gamma-ray source has a >100 MeV flux of 2.45 (+-0.63) x 10{sup -8} photons cm{sup -2} s{sup -1} (photon index = 2.26 +- 0.13) with no significant variability detected within the LAT observation. This flux is comparable with the previous EGRET upper limit (<2.18 x 10{sup -8} photons cm{sup -2} s{sup -1}, 2sigma), thus there is no evidence for a significant MeV/GeV flare on decade timescales. Contemporaneous Chandra and Very Long Baseline Array data indicate low activity in the unresolved X-ray and radio core relative to previous observations, suggesting M87 is in a quiescent overall level over the first year of Fermi-LAT observations. The LAT gamma-ray spectrum is modeled as synchrotron self-Compton (SSC) emission from the electron population producing the radio-to-X-ray emission in the core. The resultant SSC spectrum extrapolates smoothly from the LAT band to the historical-minimum TeV emission. Alternative models for the core and possible contributions from the kiloparsec-scale jet in M87 are considered, and cannot be excluded.

OSTI ID:: 21389341

Journal Information:: Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 1 Vol. 707; ISSN ASJOAB; ISSN 0004-637X

Country of Publication:: United States

Language:: English

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High-energy γ-ray properties of the Fanaroff-Riley type I radio galaxy NGC 1275: High-energy γ-ray properties of the FR I radio galaxy NGC 1275 Brown, Anthony M.; Adams, Jenni Monthly Notices of the Royal Astronomical Society, Vol. 413, Issue 4 https://doi.org/10.1111/j.1365-2966.2011.18351.x	journal	March 2011
230 GHz VLBI OBSERVATIONS OF M87: EVENT‐HORIZON‐SCALE STRUCTURE DURING AN ENHANCED VERY‐HIGH‐ENERGY $\gamma $‐RAY STATE IN 2012 Akiyama, Kazunori; Lu, Ru-Sen; Fish, Vincent L. The Astrophysical Journal, Vol. 807, Issue 2 https://doi.org/10.1088/0004-637x/807/2/150	journal	July 2015
C-Band All-Sky Survey: a first look at the Galaxy Irfan, M. O.; Dickinson, C.; Davies, R. D. Monthly Notices of the Royal Astronomical Society, Vol. 448, Issue 4 https://doi.org/10.1093/mnras/stv212	journal	March 2015
Characteristics of Gamma-Ray loud Blazars in the vlba Imaging and Polarimetry Survey Linford, J. D.; Taylor, G. B.; Romani, R. W. The Astrophysical Journal, Vol. 726, Issue 1 https://doi.org/10.1088/0004-637x/726/1/16	journal	December 2010
New Limits on Gamma-Ray Emission from Galaxy Clusters Griffin, Rhiannon D.; Dai, Xinyu; Kochanek, Christopher S. The Astrophysical Journal, Vol. 795, Issue 1 https://doi.org/10.1088/2041-8205/795/1/l21	journal	October 2014
Two-Temperature GRRMHD Simulations of M87 Ryan, Benjamin R.; Ressler, Sean M.; Dolence, Joshua C. arXiv https://doi.org/10.48550/arxiv.1808.01958	text	January 2018
The γ-Ray Emission Region in the Fanaroff-Riley ii Radio Galaxy 3c 111 Grandi, P.; Torresi, E.; Stanghellini, C. The Astrophysical Journal, Vol. 751, Issue 1 https://doi.org/10.1088/2041-8205/751/1/l3	journal	April 2012
Relativistic Jets from AGN Viewed at Highest Angular Resolution Hada, Kazuhiro Galaxies, Vol. 8, Issue 1 https://doi.org/10.3390/galaxies8010001	journal	December 2019
THE FIRST CATALOG OF ACTIVE GALACTIC NUCLEI DETECTED BY THE FERMI LARGE AREA TELESCOPE Abdo, A. A.; Ackermann, M.; Ajello, M. The Astrophysical Journal, Vol. 715, Issue 1 https://doi.org/10.1088/0004-637x/715/1/429	journal	April 2010
Nonthermal Processes in Black Hole-Jet Magnetospheres — Invited Review Rieger, Frank M. International Journal of Modern Physics D, Vol. 20, Issue 09 https://doi.org/10.1142/s0218271811019712	journal	August 2011
Probing the Central Black hole in m87 with Gamma-Rays Rieger, Frank M.; Aharonian, Felix Modern Physics Letters A, Vol. 27, Issue 28 https://doi.org/10.1142/s0217732312300303	journal	September 2012
Collective non-thermal emission from an extragalactic jet interacting with stars Vieyro, Florencia L.; Torres-Albà, Núria; Bosch-Ramon, Valentí Astronomy & Astrophysics, Vol. 604 https://doi.org/10.1051/0004-6361/201630333	journal	August 2017
Diffuse γ-Ray Emission from Misaligned Active Galactic Nuclei Di Mauro, M.; Calore, F.; Donato, F. The Astrophysical Journal, Vol. 780, Issue 2 https://doi.org/10.1088/0004-637x/780/2/161	journal	December 2013
FERMI LARGE AREA TELESCOPE OBSERVATIONS OF MISALIGNED ACTIVE GALACTIC NUCLEI Abdo, A. A.; Ackermann, M.; Ajello, M. The Astrophysical Journal, Vol. 720, Issue 1 https://doi.org/10.1088/0004-637x/720/1/912	journal	August 2010
γ-RAY SPECTRAL EVOLUTION OF NGC 1275 OBSERVED WITH FERMI LARGE AREA TELESCOPE Kataoka, J.; Stawarz, Ł.; Cheung, C. C. The Astrophysical Journal, Vol. 715, Issue 1 https://doi.org/10.1088/0004-637x/715/1/554	journal	April 2010
The role of fast magnetic reconnection on the radio and gamma-ray emission from the nuclear regions of microquasars and low luminosity AGNs Kadowaki, L. H. S.; Pino, E. M. de Gouveia Dal; Singh, Chandra B. arXiv https://doi.org/10.48550/arxiv.1410.3454	text	January 2014
The 2010 very high energy gamma-ray flare & 10 years of multi-wavelength observations of M 87 Collaboration, The H. E. S. S.; Abramowski, A.; Acero, F. arXiv https://doi.org/10.48550/arxiv.1111.5341	text	January 2011
A Strong Radio Brightening at the jet base of m 87 During the Elevated very high Energy Gamma-Ray State in 2012 Hada, K.; Giroletti, M.; Kino, M. The Astrophysical Journal, Vol. 788, Issue 2 https://doi.org/10.1088/0004-637x/788/2/165	journal	June 2014
THE ROLE OF FAST MAGNETIC RECONNECTION ON THE RADIO AND GAMMA-RAY EMISSION FROM THE NUCLEAR REGIONS OF MICROQUASARS AND LOW LUMINOSITY AGNs Kadowaki, L. H. S.; Pino, E. M. de Gouveia Dal; Singh, C. B. The Astrophysical Journal, Vol. 802, Issue 2 https://doi.org/10.1088/0004-637x/802/2/113	journal	March 2015
Suzaku Observations of gamma-Ray Bright Radio Galaxies: Origin of the X-ray Emission and Broad-Band Modelin Fukazawa, Yasushi; Finke, Justin; Stawarz, Lukasz arXiv https://doi.org/10.48550/arxiv.1410.2733	text	January 2014
FERMI LARGE AREA TELESCOPE FIRST SOURCE CATALOG Abdo, A. A.; Ackermann, M.; Ajello, M. The Astrophysical Journal Supplement Series, Vol. 188, Issue 2 https://doi.org/10.1088/0067-0049/188/2/405	journal	May 2010
Compton Dominance and the Blazar Sequence Finke, Justin D. The Astrophysical Journal, Vol. 763, Issue 2 https://doi.org/10.1088/0004-637x/763/2/134	journal	January 2013
New Limits On Gamma-Ray Emission From Galaxy Clusters Griffin, Rhiannon D.; Dai, Xinyu; Kochanek, Christopher S. arXiv https://doi.org/10.48550/arxiv.1405.7047	text	January 2014
The Spin of M87* Nemmen, Rodrigo The Astrophysical Journal, Vol. 880, Issue 2 https://doi.org/10.3847/2041-8213/ab2fd3	journal	July 2019
Rapid Gamma-Ray Variability of NGC 1275 Baghmanyan, V.; Gasparyan, S.; Sahakyan, N. The Astrophysical Journal, Vol. 848, Issue 2 https://doi.org/10.3847/1538-4357/aa8c7b	journal	October 2017
Gamma-ray observations of low-luminosity active galactic nuclei de Menezes, Raniere; Nemmen, Rodrigo; Finke, Justin D. arXiv https://doi.org/10.48550/arxiv.2001.03184	text	January 2020
Gamma-ray observations of low-luminosity active galactic nuclei de Menezes, Raniere; Nemmen, Rodrigo; Finke, Justin D. Monthly Notices of the Royal Astronomical Society, Vol. 492, Issue 3 https://doi.org/10.1093/mnras/staa083	journal	January 2020
Constraining extended gamma-ray emission from galaxy clusters: Extended gamma-ray emission in clusters Han, Jiaxin; Frenk, Carlos S.; Eke, Vincent R. Monthly Notices of the Royal Astronomical Society, Vol. 427, Issue 2 https://doi.org/10.1111/j.1365-2966.2012.22080.x	journal	November 2012
BLAZARS AS ULTRA-HIGH-ENERGY COSMIC-RAY SOURCES: IMPLICATIONS FOR TeV GAMMA-RAY OBSERVATIONS Murase, Kohta; Dermer, Charles D.; Takami, Hajime The Astrophysical Journal, Vol. 749, Issue 1 https://doi.org/10.1088/0004-637x/749/1/63	journal	March 2012
Broad Line Radio Galaxies Observed with Fermi-LAT: The Origin of the GeV Gamma-Ray Emission Kataoka, J.; Stawarz, L.; Takahashi, Y. arXiv https://doi.org/10.48550/arxiv.1107.3370	text	January 2011
A strong radio brightening at the jet base of M87 during the elevated very-high-energy γ-ray state in 2012 Hada, K.; Giroletti, M.; Kino, M. Proceedings of the International Astronomical Union, Vol. 10, Issue S313 https://doi.org/10.1017/s174392131500246x	journal	September 2014
SUZAKU OBSERVATIONS OF γ-RAY BRIGHT RADIO GALAXIES: ORIGIN OF THE X-RAY EMISSION AND BROADBAND MODELING Fukazawa, Yasushi; Finke, Justin; Stawarz, Łukasz The Astrophysical Journal, Vol. 798, Issue 2 https://doi.org/10.1088/0004-637x/798/2/74	journal	December 2014

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
79 ASTRONOMY AND ASTROPHYSICS
BOSONS
COSMIC RADIO SOURCES
DETECTION
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
EMISSION
ENERGY RANGE
FERMIONS
GALAXIES
GAMMA DETECTION
GAMMA RADIATION
GAMMA SOURCES
GAMMA SPECTRA
GEV RANGE
IONIZING RADIATIONS
LEPTONS
MASSLESS PARTICLES
MEV RANGE
PHOTONS
RADIATION DETECTION
RADIATION SOURCES
RADIATIONS
RADIO GALAXIES
SPECTRA
TELESCOPES
TEV RANGE

FERMI LARGE AREA TELESCOPE GAMMA-RAY DETECTION OF THE RADIO GALAXY M87

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