Gamma-Ray Flaring Activity from the Gravitationally Lensed Blazar PKS 1830-211 Observed by Fermi LAT

A.A. Abdo; M. Ackermann; M. Ajello; A. Allafort; M.A. Amin; L. Baldini; G. Barbiellini; D. Bastieri; K. Bechtol; R. Bellazzini; R.D. Blandford; E. Bonamente; A.W. Borgland; J. Bregeon; M. Brigida; R. Buehler; D. Bulmash; S. Buson; G.A. Caliandro; R.A. Cameron; P.A. Caraveo; E. Cavazzuti; C. Cecchi; E. Charles; C.C. Cheung; J. Chiang; G. Chiaro; S. Ciprini; R. Claus; J. Cohen-Tanugi; J. Conrad; R.H.D. Corbet; S. Cutini; F. d'Ammando; A. de Angelis; F. de Palma; C.D. Dermer; P.S. Drell; A. Drlica-Wagner; C. Favuzzi; J. Finke; W.B. Focke; Y. Fukazawa; P. Fusco; F. Gargano; D. Gasparrini; N. Gehrels; N. Giglietto; F. Giordano; M. Giroletti; T. Glanzman; I.A. Grenier; J.E. Grove; S. Guiriec; D. Hadasch; M. Hayashida; E. Hays; R.E. Hughes; Y. Inoue; M.S. Jackson; T. Jogler; G. Johannesson; A.S. Johnson; T. Kamae; J. Knodlseder; M. Kuss; J. Lande; S. Larsson; L. Latronico; F. Longo; F. Loparco; B. Lott; M.N. Lovellette; P. Lubrano; G.M. Madejski; M.N. Mazziotta; J. Mehault; P.F. Michelson; T. Mizuno; M.E. Monzani; A. Morselli; I.V. Moskalenko; S. Murgia; R. Nemmen; E. Nuss; M. Ohno; T. Ohsugi; D. Paneque; J.S. Perkins; M. Pesce-Rollins; F. Piron; G. Pivato; T.A. Porter; S. Raino; R. Rando; M. Razzano; A. Reimer; O. Reimer; L.C. Reyes; S. Ritz; C. Romoli; M. Roth; P.M. Saz Parkinson; C. Sgro; E.J. Siskind; G. Spandre; P. Spinelli; H. Takahashi; Y. Takeuchi; T. Tanaka; J.G. Thayer; J.B. Thayer; D.J. Thompson; L. Tibaldo; M. Tinivella; D.F. Torres; G. Tosti; E. Troja; V. Tronconi; T.L. Usher; J. Vandenbroucke; V. Vasileiou; G. Vianello; V. Vitale; A.P. Waite; M. Werner; B.L. Winer; K.S. Wood

doi:10.1088/0004-637X/799/2/143

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Gamma-Ray Flaring Activity from the Gravitationally Lensed Blazar PKS 1830-211 Observed by Fermi LAT

Journal article

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Gamma-Ray Flaring Activity from the Gravitationally Lensed Blazar PKS 1830-211 Observed by Fermi LAT

A.A. Abdo, M. Ackermann, M. Ajello, A. Allafort, M.A. Amin, L. Baldini, G. Barbiellini, D. Bastieri, K. Bechtol, R. Bellazzini, …

The Astrophysical Journal, Vol.799(2)

2015

DOI: https://doi.org/10.1088/0004-637X/799/2/143

Abstract

gamma rays: galaxies

gamma rays: general

gravitational lensing: strong

quasars: individual

radiation mechanisms: non-thermal

X-rays: individual

The Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope routinely detects the MeV-peaked flat-spectrum radio quasar PKS 1830–211 (z = 2.507). Its apparent isotropic γ-ray luminosity (E > 100 MeV), averaged over ~3 years of observations and peaking on 2010 October 14/15 at 2.9 × 10(50) erg s(–)(1), makes it among the brightest high-redshift Fermi blazars. No published model with a single lens can account for all of the observed characteristics of this complex system. Based on radio observations, one expects time-delayed variability to follow about 25 days after a primary flare, with flux about a factor of 1.5 less. Two large γ-ray flares of PKS 1830–211 have been detected by the LAT in the considered period, and no substantial evidence for such a delayed activity was found. This allows us to place a lower limit of about 6 on the γ-ray flux ratio between the two lensed images. Swift XRT observations from a dedicated Target of Opportunity program indicate a hard spectrum with no significant correlation of X-ray flux with the γ-ray variability. The spectral energy distribution can be modeled with inverse Compton scattering of thermal photons from the dusty torus. The implications of the LAT data in terms of variability, the lack of evident delayed flare events, and different radio and γ-ray flux ratios are discussed. Microlensing effects, absorption, size and location of the emitting regions, the complex mass distribution of the system, an energy-dependent inner structure of the source, and flux suppression by the lens galaxy for one image path may be considered as hypotheses for understanding our results.

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Title: Gamma-Ray Flaring Activity from the Gravitationally Lensed Blazar PKS 1830-211 Observed by Fermi LAT
Creators - without role: A.A. Abdo - George Mason University
M. Ackermann - Deutsches Elektronen-Synchrotron DESY
M. Ajello - University of California, Berkeley
A. Allafort - Kavli Institute for Particle Astrophysics and Cosmology
M.A. Amin - Massachusetts Institute of Technology
L. Baldini - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
G. 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
R.D. Blandford - Kavli Institute for Particle Astrophysics and Cosmology
E. Bonamente - University of Perugia
A.W. Borgland - Stanford University
J. Bregeon - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
M. Brigida - Polytechnic University of Bari
R. Buehler - Deutsches Elektronen-Synchrotron DESY
D. Bulmash - Stanford University
S. Buson - University of Padua
G.A. Caliandro - Kavli Institute for Particle Astrophysics and Cosmology
R.A. Cameron - Stanford University
P.A. Caraveo - Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano
E. Cavazzuti - Agenzia Spaziale Italiana
C. Cecchi - University of Perugia
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
G. Chiaro - University of Padua
S. Ciprini - Astronomical Observatory of Rome
R. Claus - Kavli Institute for Particle Astrophysics and Cosmology
J. Cohen-Tanugi - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
J. Conrad - Stockholm University
R.H.D. Corbet
S. Cutini - Agenzia Spaziale Italiana
F. d'Ammando
A. de Angelis - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
F. de Palma - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
C.D. Dermer - United States Naval Research Laboratory
P.S. Drell - Kavli Institute for Particle Astrophysics and Cosmology
A. Drlica-Wagner - Fermi National Accelerator Laboratory
C. Favuzzi - Polytechnic University of Bari
J. Finke - United States Naval Research Laboratory
W.B. Focke - Stanford University
Y. Fukazawa - Hiroshima University
P. Fusco - Polytechnic University of Bari
F. Gargano - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
D. Gasparrini - Astronomical Observatory of Rome
N. Gehrels - Goddard Space Flight Center
N. Giglietto - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
F. Giordano - Polytechnic University of Bari
M. Giroletti - Istituto di Radioastronomia di Bologna
T. Glanzman - Stanford University
I.A. Grenier - CEA Paris-Saclay
J.E. Grove - United States Naval Research Laboratory
S. Guiriec - Goddard Space Flight Center
D. Hadasch - Universität Innsbruck
M. Hayashida - The University of Tokyo
E. Hays - Goddard Space Flight Center
R.E. Hughes - The Ohio State University
Y. Inoue - Kavli Institute for Particle Astrophysics and Cosmology
M.S. Jackson - Fraunhofer Chalmers Research Centre for Industrial Mathematics
T. Jogler - Stanford University
G. Johannesson - University of Iceland
A.S. Johnson - Stanford University
T. Kamae - Kavli Institute for Particle Astrophysics and Cosmology
J. Knodlseder - Centre National de la Recherche Scientifique
M. Kuss - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
J. Lande - Kavli Institute for Particle Astrophysics and Cosmology
S. Larsson - Stockholm University
L. Latronico - Istituto Nazionale di Fisica Nucleare, Sezione di Torino
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. Madejski - Kavli Institute for Particle Astrophysics and Cosmology
M.N. Mazziotta - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
J. Mehault - Institut National de Physique Nucléaire et de Physique des Particules
P.F. Michelson - Kavli Institute for Particle Astrophysics and Cosmology
T. Mizuno - Hiroshima University
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 - University of California, Irvine
R. Nemmen - University of Maryland, Baltimore County
E. Nuss - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
M. Ohno - Hiroshima University
T. Ohsugi - Hiroshima University
D. Paneque - Max Planck Institute for Physics
J.S. Perkins - Goddard Space Flight Center
M. Pesce-Rollins - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
F. Piron - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
G. Pivato - University of Padua
T.A. Porter - Kavli Institute for Particle Astrophysics and Cosmology
S. Raino - Polytechnic University of 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
O. Reimer - Kavli Institute for Particle Astrophysics and Cosmology
L.C. Reyes - California Polytechnic State University
S. Ritz - University of California, Santa Cruz
C. Romoli - University of Padua
M. Roth - University of Washington
P.M. Saz Parkinson
C. Sgro - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
E.J. Siskind - Real Time Tomography
G. Spandre - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
P. Spinelli - Polytechnic University of Bari
H. Takahashi - Hiroshima University
Y. Takeuchi - Waseda University
T. Tanaka - Kyoto University
J.G. Thayer - Kavli Institute for Particle Astrophysics and Cosmology
J.B. Thayer - Stanford University
D.J. Thompson - Goddard Space Flight Center
L. Tibaldo - Kavli Institute for Particle Astrophysics and Cosmology
M. Tinivella - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
D.F. Torres - Institute of Space Sciences
G. Tosti - Istituto Nazionale di Fisica Nucleare, Sezione di Perugia
E. Troja - Goddard Space Flight Center
V. Tronconi - University of Padua
T.L. Usher - Kavli Institute for Particle Astrophysics and Cosmology
J. Vandenbroucke - Kavli Institute for Particle Astrophysics and Cosmology
V. Vasileiou - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
G. Vianello - Kavli Institute for Particle Astrophysics and Cosmology
V. Vitale - University of Rome Tor Vergata
A.P. Waite - Kavli Institute for Particle Astrophysics and Cosmology
M. Werner - Universität Innsbruck
B.L. Winer - The Ohio State University
K.S. Wood - United States Naval Research Laboratory
Publication Details: The Astrophysical Journal, Vol.799(2)
Identifiers: 9935355109311
Academic Unit: Laboratoire Univers et Particules de Montpellier - LUPM
Language: English
Resource Type: Journal article
Local Fields: hal-02017036