Fermi Large Area Telescope Gamma-Ray Detection of the Radio Galaxy M87

A. A. Abdo; Markus Ackermann; Marco Ajello; W. B. Atwood; Magnus Axelsson; Luca Baldini; Jean Ballet; Guido Barbiellini; D. Bastieri; K. Bechtol; R. Bellazzini; B. Berenji; R. D. Blandford; E.D. Bloom; E. Bonamente; A.W. Borgland; J. Bregeon; A. Brez; M. Brigida; Pascal Bruel; T.H. Burnett; G.A. Caliandro; R.A. Cameron; A. Cannon; P. A. Caraveo; J.M. Casandjian; E. Cavazzuti; C. Cecchi; O. Celik; E. Charles; C.C. Cheung; J. Chiang; S. Ciprini; R. Claus; J. Cohen-Tanugi; S. Colafrancesco; J. Conrad; L. Costamante; S. Cutini; D.S. Davis; C.D. Dermer; A. de Angelis; F. de Palma; S.W. Digel; D. Donato; E. Do Couto E Silva; P.S. Drell; R. Dubois; D. Dumora; Y. Edmonds; C. Farnier; C. Favuzzi; S.J. Fegan; J. Finke; W.B. Focke; P. Fortin; M. Frailis; Y. Fukazawa; S. Funk; P. Fusco; F. Gargano; D. Gasparrini; N. Gehrels; M. Georganopoulos; S. Germani; B. Giebels; N. Giglietto; P. Giommi; F. Giordano; M. Giroletti; T. Glanzman; G. Godfrey; I.A. Grenier; M.H. Grondin; J.E. Grove; L. Guillemot; S. Guiriec; Y. Hanabata; A.K. Harding; M. Hayashida; E. Hays; D. Horan; G. Jóhannesson; A.S. Johnson; R.P. Johnson; T.J. Johnson; W.N. Johnson; T. Kamae; H. Katagiri; J. Kataoka; N. Kawai; M. Kerr; Jürgen Knödlseder; M. L. Kocian; M. Kuss; J. Lande; L. Latronico; M. Lemoine-Goumard; F. Longo; F. Loparco; B. Lott; M.N. Lovellette; P. Lubrano; G.M. Madjeski; A. Makeev; M.N. Mazziotta; W. Mcconville; J.E. Mcenery; C. Meurer; P.F. Michelson; W. Mitthumsiri; T. Mizuno; A.A. Moiseev; C. Monte; M.E. Monzani; A. Morselli; I.V. Moskalenko; S. Murgia; P.L. Nolan; J. P. Norris; E. Nuss; T. Ohsugi; N. Omodei; E. Orlando; J.F. Ormes; M. Ozaki; D. Paneque; J.H. Panetta; D. Parent; V. Pelassa; M. Pepe; M. Pesce-Rollins; F. Piron; T.A. Porter; S. Rainò; R. Rando; M. Razzano; A. Reimer; T. Reposeur; S. Ritz; L.S. Rochester; A. Y. Rodriguez; R.W. Romani; F. Ryde; H. F.-W. Sadrozinski; R. Sambruna; D. Sanchez; P.M. Saz Parkinson; J.D. Scargle; C. Sgrò; M. Shaw; D. A. Smith; P. D. Smith; G. Spandre; P. Spinelli; M.S. Strickman; D.J. Suson; H. Tajima; H. Takahashi; T. Tanaka; G.B. Taylor; J.B. Thayer; D.J. Thompson; L. Tibaldo; D.F. Torres; G. Tosti; A. Tramacere; Y. Uchiyama; T.L. Usher; V. Vasileiou; N. Vilchez; A. P. Waite; P. Wang; B. L. Winer; K. S. Wood; T. Ylinen; M. Ziegler; D.E. Harris; F. Massaro; L. Stawarz

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

Back

Fermi Large Area Telescope Gamma-Ray Detection of the Radio Galaxy M87

Journal article

Open access

Peer reviewed

Fermi Large Area Telescope Gamma-Ray Detection of the Radio Galaxy M87

A. A. Abdo, Markus Ackermann, Marco Ajello, W. B. Atwood, Magnus Axelsson, Luca Baldini, Jean Ballet, Guido Barbiellini, D. Bastieri, K. Bechtol, …

The Astrophysical Journal, Vol.707, pp.55-60

10/12/2009

DOI: https://doi.org/10.1088/0004-637X/707/1/55

Abstract

We report the Fermi-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 10 sigma in ten-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^-8 ph cm^-2 s^-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^-8 ph cm^-2 s^-1, 2 sigma), thus there is no evidence for a significant MeV/GeV flare on decade timescales. Contemporaneous Chandra and VLBA 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 can not be excluded.

Files and links (2)

url

Find in HALView

url

https://doi.org/10.1088/0004-637X/707/1/55View

Published (Version of record) Open

Metrics

1 Record Views

Details

Title: Fermi Large Area Telescope Gamma-Ray Detection of the Radio Galaxy M87
Creators - without role: A. A. Abdo
Markus Ackermann - Stanford University
Marco Ajello - Stanford University
W. B. Atwood
Magnus Axelsson - Fraunhofer Chalmers Research Centre for Industrial Mathematics
Luca Baldini - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Jean Ballet - Astrophysique, Instrumentation et Modélisation
Guido Barbiellini - University of Trieste
D. Bastieri - University of Padua
K. Bechtol - Kavli Institute for Particle Astrophysics and Cosmology
R. Bellazzini - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
B. Berenji - Kavli Institute for Particle Astrophysics and Cosmology
R. D. Blandford - Kavli Institute for Particle Astrophysics and Cosmology
E.D. Bloom - Kavli Institute for Particle Astrophysics and Cosmology
E. Bonamente - University of Perugia
A.W. Borgland - Stanford University
J. Bregeon - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
A. Brez - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
M. Brigida - Polytechnic University of Bari
Pascal Bruel - École Polytechnique
T.H. Burnett - University of Washington
G.A. Caliandro - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
R.A. Cameron - Stanford University
A. Cannon - University College Dublin
P. A. Caraveo - Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano
J.M. Casandjian - Université Paris Cité
E. Cavazzuti - Agenzia Spaziale Italiana
C. Cecchi - University of Perugia
O. Celik - Goddard Space Flight Center
E. Charles - Kavli Institute for Particle Astrophysics and Cosmology
C.C. Cheung - United States Naval Research Laboratory
J. Chiang - Kavli Institute for Particle Astrophysics and Cosmology
S. Ciprini - University of Perugia
R. Claus - Kavli Institute for Particle Astrophysics and Cosmology
J. Cohen-Tanugi - Laboratoire de Physique Théorique
S. Colafrancesco - Agenzia Spaziale Italiana
J. Conrad - Stockholm University
L. Costamante - Kavli Institute for Particle Astrophysics and Cosmology
S. Cutini - Agenzia Spaziale Italiana
D.S. Davis - University of Maryland, Baltimore County
C.D. Dermer - United States Naval Research Laboratory
A. de Angelis - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
F. de Palma - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
S.W. Digel - Kavli Institute for Particle Astrophysics and Cosmology
D. Donato - Goddard Space Flight Center
E. Do Couto E Silva
P.S. Drell - Kavli Institute for Particle Astrophysics and Cosmology
R. Dubois - SLAC National Accelerator Laboratory
D. Dumora - Laboratoire de Physique des deux infinis Bordeaux
Y. Edmonds - Kavli Institute for Particle Astrophysics and Cosmology
C. Farnier - Laboratoire de Physique Théorique
C. Favuzzi - Polytechnic University of Bari
S.J. Fegan - Laboratoire Leprince-Ringuet
J. Finke - United States Naval Research Laboratory
W.B. Focke - Stanford University
P. Fortin - Centre National de la Recherche Scientifique
M. Frailis - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
Y. Fukazawa - Hiroshima University
S. Funk - Stanford University
P. Fusco - Polytechnic University of Bari
F. Gargano - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
D. Gasparrini - Agenzia Spaziale Italiana
N. Gehrels - Goddard Space Flight Center
M. Georganopoulos - University of Maryland, Baltimore County
S. Germani - University of Perugia
B. Giebels - Laboratoire Leprince-Ringuet
N. Giglietto - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
P. Giommi - Agenzia Spaziale Italiana
F. Giordano - Polytechnic University of Bari
M. Giroletti - Istituto di Radioastronomia di Bologna
T. Glanzman - Stanford University
G. Godfrey - Kavli Institute for Particle Astrophysics and Cosmology
I.A. Grenier - CEA Paris-Saclay
M.H. Grondin - Centre National de la Recherche Scientifique
J.E. Grove - United States Naval Research Laboratory
L. Guillemot - Laboratoire de Physique des deux infinis Bordeaux
S. Guiriec - University of Alabama in Huntsville
Y. Hanabata - Hiroshima University
A.K. Harding - Goddard Space Flight Center
M. Hayashida - SLAC National Accelerator Laboratory
E. Hays - Goddard Space Flight Center
D. Horan - Laboratoire Leprince-Ringuet
G. Jóhannesson - Kavli Institute for Particle Astrophysics and Cosmology
A.S. Johnson - Kavli Institute for Particle Astrophysics and Cosmology
R.P. Johnson - University of California, Santa Cruz
T.J. Johnson - University of Maryland, College Park
W.N. Johnson - United States Naval Research Laboratory
T. Kamae - Kavli Institute for Particle Astrophysics and Cosmology
H. Katagiri - Hiroshima University
J. Kataoka - Waseda University
N. Kawai - RIKEN
M. Kerr - University of Washington
Jürgen Knödlseder - Centre National d'Études Spatiales
M. L. Kocian - Kavli Institute for Particle Astrophysics and Cosmology
M. Kuss - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
J. Lande - Kavli Institute for Particle Astrophysics and Cosmology
L. Latronico - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
M. Lemoine-Goumard - Laboratoire de Physique des deux infinis Bordeaux
F. Longo - University of Trieste
F. Loparco - Polytechnic University of Bari
B. Lott - Laboratoire de Physique des deux infinis Bordeaux
M.N. Lovellette - United States Naval Research Laboratory
P. Lubrano - University of Perugia
G.M. Madjeski
A. Makeev - United States Naval Research Laboratory
M.N. Mazziotta - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
W. Mcconville - Goddard Space Flight Center
J.E. Mcenery - Goddard Space Flight Center
C. Meurer - AlbaNova
P.F. Michelson - Kavli Institute for Particle Astrophysics and Cosmology
W. Mitthumsiri - Stanford University
T. Mizuno - Hiroshima University
A.A. Moiseev - Goddard Space Flight Center
C. Monte - Polytechnic University of Bari
M.E. Monzani - Kavli Institute for Particle Astrophysics and Cosmology
A. Morselli - Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
I.V. Moskalenko - Stanford University
S. Murgia - Kavli Institute for Particle Astrophysics and Cosmology
P.L. Nolan - Kavli Institute for Particle Astrophysics and Cosmology
J. P. Norris - University of Denver
E. Nuss - Laboratoire de Physique Théorique
T. Ohsugi - Hiroshima University
N. Omodei - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
E. Orlando - Max Planck Institute for Extraterrestrial Physics
J.F. Ormes - University of Denver
M. Ozaki - Institute of Space and Astronautical Science
D. Paneque - Kavli Institute for Particle Astrophysics and Cosmology
J.H. Panetta - Stanford University
D. Parent - Université de Bordeaux
V. Pelassa - Laboratoire de Physique Théorique
M. Pepe - University of Perugia
M. Pesce-Rollins - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
F. Piron - Laboratoire de Physique Théorique
T.A. Porter - University of California, Santa Cruz
S. Rainò - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
R. Rando - University of Padua
M. Razzano - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
A. Reimer - Kavli Institute for Particle Astrophysics and Cosmology
T. Reposeur - Laboratoire de Physique des deux infinis Bordeaux
S. Ritz - University of California, Santa Cruz
L.S. Rochester - Kavli Institute for Particle Astrophysics and Cosmology
A. Y. Rodriguez - Institute of Space Sciences
R.W. Romani - Kavli Institute for Particle Astrophysics and Cosmology
F. Ryde - AlbaNova
H. F.-W. Sadrozinski - University of California, Santa Cruz
R. Sambruna - Goddard Space Flight Center
D. Sanchez - Laboratoire Leprince-Ringuet
P.M. Saz Parkinson
J.D. Scargle - Ames Research Center
C. Sgrò - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
M. Shaw - Stanford University
D. A. Smith - Institut National de Physique Nucléaire et de Physique des Particules
P. D. Smith - The Ohio State University
G. Spandre - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
P. Spinelli - Polytechnic University of Bari
M.S. Strickman - United States Naval Research Laboratory
D.J. Suson - Purdue University Northwest
H. Tajima - Kavli Institute for Particle Astrophysics and Cosmology
H. Takahashi - Hiroshima University
T. Tanaka - Kavli Institute for Particle Astrophysics and Cosmology
G.B. Taylor - University of New Mexico
J.B. Thayer - Stanford University
D.J. Thompson - Goddard Space Flight Center
L. Tibaldo - Istituto Nazionale di Fisica Nucleare, Sezione di Padova
D.F. Torres - Institució Catalana de Recerca i Estudis Avançats
G. Tosti - Istituto Nazionale di Fisica Nucleare, Sezione di Perugia
A. Tramacere - Stanford University
Y. Uchiyama - Stanford University
T.L. Usher - Kavli Institute for Particle Astrophysics and Cosmology
V. Vasileiou - Goddard Space Flight Center
N. Vilchez - Université Toulouse III - Paul Sabatier
A. P. Waite - Kavli Institute for Particle Astrophysics and Cosmology
P. Wang - Stanford University
B. L. Winer - The Ohio State University
K. S. Wood - United States Naval Research Laboratory
T. Ylinen - Fraunhofer Chalmers Research Centre for Industrial Mathematics
M. Ziegler - University of California, Santa Cruz
D.E. Harris - Center for Astrophysics Harvard & Smithsonian
F. Massaro - Center for Astrophysics Harvard & Smithsonian
L. Stawarz
Publication Details: The Astrophysical Journal, Vol.707, pp.55-60
Identifiers: 9938154909311
Academic Unit: Université de Montpellier
Language: English
Resource Type: Journal article
Local Fields: in2p3-00440769