Discovery of very high energy gamma rays from PKS 1424+240 and multiwavelength constraints on its redshift

V. A. Acciari; E. Aliu; T. Arlen; T. Aune; M. Bautista; M. Beilicke; W. Benbow; M. Böttcher; D. Boltuch; S. M. Bradbury; J. H. Buckley; V. Bugaev; K. Byrum; A. Cannon; A. Cesarini; Y. C. Chow; L. Ciupik; P. Cogan; W. Cui; C. Duke; A. Falcone; J. P. Finley; G. Finnegan; L. Fortson; A. Furniss; N. Galante; D. Gall; G. H. Gillanders; S. Godambe; J. Grube; R. Guenette; G. Gyuk; D. Hanna; J. Holder; C. M. Hui; T. B. Humensky; P. Kaaret; N. Karlsson; M. Kertzman; D. Kieda; A. Konopelko; H. Krawczynski; F. Krennrich; M. J. Lang; S. Lebohec; G. Maier; S. Mcarthur; A. Mccann; M. Mccutcheon; J. Millis; P. Moriarty; T. Nagai; R. A. Ong; A. N. Otte; D. Pandel; J. S. Perkins; A. Pichel; M. Pohl; J. Quinn; K. Ragan; L. C. Reyes; P. T. Reynolds; E. Roache; H. J. Rose; M. Schroedter; G. H. Sembroski; G. Demet Senturk; A. W. Smith; D. D. Steele; S. P. Swordy; M. Theiling; S. Thibadeau; A. Varlotta; V. V. Vassiliev; S. Vincent; R. G. Wagner; S. P. Wakely; J. E. Ward; T. C. Weekes; A. Weinstein; T. Weisgarber; D. A. Williams; S. Wissel; M. Wood; B. Zitzer (veritas Collaboration); A. A. Abdo; M. Ackermann; M. Ajello; L. Baldini; Jean Ballet; G. Barbiellini; D. Bastieri; B. M. Baughman; 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; P. A. Caraveo; J. M. Casandjian; E. Cavazzuti; C. Cecchi; Ö. Çelik; A. Chekhtman; C. C. Cheung; J. Chiang; S. Ciprini; R. Claus; J. Cohen-Tanugi; J. Conrad; S. Cutini; C. D. Dermer; A. de Angelis; F. de Palma; E. Do Couto e Silva; P. S. Drell; A. Drlica-Wagner; R. Dubois; D. Dumora; C. Farnier; C. Favuzzi; S. J. Fegan; W. B. Focke; P. Fortin; M. Frailis; Y. Fukazawa; P. Fusco; F. Gargano; D. Gasparrini; N. Gehrels; S. Germani; B. Giebels; N. Giglietto; P. Giommi; F. Giordano; T. Glanzman; G. Godfrey; I. A. Grenier; J. E. Grove; L. Guillemot; S. Guiriec; Y. Hanabata; E. Hays; R. E. Hughes; M. S. Jackson; G. Jóhannesson; A. S. 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; F. Longo; F. Loparco; B. Lott; M. N. Lovellette; P. Lubrano; G. M. Madejski; A. Makeev; M. N. Mazziotta; 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; D. Paneque; D. Parent; V. Pelassa; M. Pepe; M. Pesce-Rollins; F. Piron; T. A. Porter; S. Rainò; R. Rando; M. Razzano; A. Reimer; O. Reimer; T. Reposeur; A. Y. Rodriguez; M. Roth; F. Ryde; H. F.-W. Sadrozinski; D. Sanchez; A. Sander; P. M. Saz Parkinson; J. D. Scargle; C. Sgrò; M. S. Shaw; E. J. Siskind; P. D. Smith; G. Spandre; P. Spinelli; M. S. Strickman; D. J. Suson; H. Tajima; H. Takahashi; T. Tanaka; J. B. Thayer; J. G. Thayer; D. J. Thompson; L. Tibaldo; D. F. Torres; G. Tosti; A. Tramacere; Y. Uchiyama; T. L. Usher; V. Vasileiou; N. Vilchez; V. Vitale; A. P. Waite; P. Wang; B. L. Winer; K. S. Wood; T. Ylinen; M. Ziegler; S. D. Barber; D. M. Terndrup

doi:10.1088/2041-8205/708/2/L100

Back

Discovery of very high energy gamma rays from PKS 1424+240 and multiwavelength constraints on its redshift

Journal article

Peer reviewed

Discovery of very high energy gamma rays from PKS 1424+240 and multiwavelength constraints on its redshift

V. A. Acciari, E. Aliu, T. Arlen, T. Aune, M. Bautista, M. Beilicke, W. Benbow, M. Böttcher, D. Boltuch, S. M. Bradbury, …

The Astrophysical Journal Letters, Vol.708, pp.L100-L106

10/01/2010

DOI: https://doi.org/10.1088/2041-8205/708/2/L100

Abstract

BL Lacertae objects: individual (PKS 1424+240 = VER J1427+237)

gamma rays: observations

We report the first detection of very-high-energy (VHE) gamma-ray emission above 140 GeV from PKS 1424+240, a BL Lac object with an unknown redshift. The photon spectrum above 140 GeV measured by VERITAS is well described by a power law with a photon index of 3.8 +- 0.5_stat +- 0.3_syst and a flux normalization at 200 GeV of (5.1 +- 0.9_stat +- 0.5_syst) x 10^{-11} TeV^-1 cm^-2 s^-1, where stat and syst denote the statistical and systematical uncertainty, respectively. The VHE flux is steady over the observation period between MJD 54881 and 55003 (2009 February 19 to June 21). Flux variability is also not observed in contemporaneous high energy observations with the Fermi Large Area Telescope (LAT). Contemporaneous X-ray and optical data were also obtained from the Swift XRT and MDM observatory, respectively. The broadband spectral energy distribution (SED) is well described by a one-zone synchrotron self-Compton (SSC) model favoring a redshift of less than 0.1. Using the photon index measured with Fermi in combination with recent extragalactic background light (EBL) absorption models it can be concluded from the VERITAS data that the redshift of PKS 1424+240 is less than 0.66.

Files and links (1)

url

Find in HALView

Metrics

1 Record Views

Details

Title: Discovery of very high energy gamma rays from PKS 1424+240 and multiwavelength constraints on its redshift
Creators - without role: V. A. Acciari - Center for Astrophysics Harvard & Smithsonian
E. Aliu - University of Delaware
T. Arlen - University of California, Los Angeles
T. Aune - University of California, Santa Cruz
M. Bautista - McGill University
M. Beilicke - Washington University in St. Louis
W. Benbow - Center for Astrophysics Harvard & Smithsonian
M. Böttcher - Ohio University
D. Boltuch - University of Delaware
S. M. Bradbury - University of Leeds
J. H. Buckley - Washington University in St. Louis
V. Bugaev - Washington University in St. Louis
K. Byrum - Argonne National Laboratory
A. Cannon - University College Dublin
A. Cesarini - Ollscoil na Gaillimhe – University of Galway
Y. C. Chow - University of California, Los Angeles
L. Ciupik - Adler Planetarium
P. Cogan - McGill University
W. Cui - Purdue University West Lafayette
C. Duke - Grinnell College
A. Falcone - Pennsylvania State University
J. P. Finley - Purdue University West Lafayette
G. Finnegan - University of Utah
L. Fortson - Adler Planetarium
A. Furniss - University of California, Santa Cruz
N. Galante - Center for Astrophysics Harvard & Smithsonian
D. Gall - Purdue University West Lafayette
G. H. Gillanders - Ollscoil na Gaillimhe – University of Galway
S. Godambe - University of Utah
J. Grube - University College Dublin
R. Guenette - McGill University
G. Gyuk - Adler Planetarium
D. Hanna - McGill University
J. Holder - University of Delaware
C. M. Hui - University of Utah
T. B. Humensky - Fermi National Accelerator Laboratory
P. Kaaret - University of Iowa
N. Karlsson - Adler Planetarium
M. Kertzman - DePauw University
D. Kieda - University of Utah
A. Konopelko - Pittsburg State University
H. Krawczynski - Washington University in St. Louis
F. Krennrich - Iowa State University
M. J. Lang - Ollscoil na Gaillimhe – University of Galway
S. Lebohec - University of Utah
G. Maier - McGill University
S. Mcarthur - Washington University in St. Louis
A. Mccann - McGill University
M. Mccutcheon - McGill University
J. Millis - Purdue University West Lafayette
P. Moriarty - Galway-Mayo Institute of Technology
T. Nagai - Iowa State University
R. A. Ong - University of California, Los Angeles
A. N. Otte - University of California, Santa Cruz
D. Pandel - University of Iowa
J. S. Perkins - Center for Astrophysics Harvard & Smithsonian
A. Pichel - Institute of Astronomy and Space Physics
M. Pohl - Iowa State University
J. Quinn - University College Dublin
K. Ragan - McGill University
L. C. Reyes - University of Chicago
P. T. Reynolds - Munster Technological University
E. Roache - Center for Astrophysics Harvard & Smithsonian
H. J. Rose - University of Leeds
M. Schroedter - Iowa State University
G. H. Sembroski - Purdue University West Lafayette
G. Demet Senturk
A. W. Smith - Argonne National Laboratory
D. D. Steele - Adler Planetarium
S. P. Swordy - Fermi National Accelerator Laboratory
M. Theiling - Center for Astrophysics Harvard & Smithsonian
S. Thibadeau - Washington University in St. Louis
A. Varlotta - Purdue University West Lafayette
V. V. Vassiliev - University of California, Los Angeles
S. Vincent - University of Utah
R. G. Wagner - Argonne National Laboratory
S. P. Wakely - Fermi National Accelerator Laboratory
J. E. Ward - University College Dublin
T. C. Weekes - Center for Astrophysics Harvard & Smithsonian
A. Weinstein - University of California, Los Angeles
T. Weisgarber - Fermi National Accelerator Laboratory
D. A. Williams - University of California, Santa Cruz
S. Wissel - University of Chicago
M. Wood - University of California, Los Angeles
B. Zitzer (veritas Collaboration)
A. A. Abdo - United States Naval Research Laboratory
M. Ackermann - Kavli Institute for Particle Astrophysics and Cosmology
M. Ajello - Kavli Institute for Particle Astrophysics and Cosmology
L. Baldini - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Jean Ballet - Astrophysique, Instrumentation et Modélisation
G. Barbiellini - University of Trieste
D. Bastieri - University of Padua
B. M. Baughman - The Ohio State University
K. Bechtol - Kavli Institute for Particle Astrophysics and Cosmology
R. Bellazzini - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
B. Berenji - Stanford University
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 - Polytechnic University of Bari
R. A. Cameron - Stanford University
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
Ö. Çelik - Goddard Space Flight Center
A. Chekhtman - George Mason University
C. C. Cheung - Goddard Space Flight Center
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
J. Conrad - Stockholm University
S. Cutini - Agenzia Spaziale Italiana
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
E. Do Couto e Silva
P. S. Drell - Kavli Institute for Particle Astrophysics and Cosmology
A. Drlica-Wagner - Kavli Institute for Particle Astrophysics and Cosmology
R. Dubois - Kavli Institute for Particle Astrophysics and Cosmology
D. Dumora - Laboratoire de Physique des deux infinis Bordeaux
C. Farnier - Laboratoire de Physique Théorique
C. Favuzzi - Polytechnic University of Bari
S. J. Fegan - Laboratoire Leprince-Ringuet
W. B. Focke - SLAC National Accelerator Laboratory
P. Fortin - Centre National de la Recherche Scientifique
M. Frailis - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
Y. Fukazawa - Hiroshima 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
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
T. Glanzman - Stanford University
G. Godfrey - Kavli Institute for Particle Astrophysics and Cosmology
I. A. Grenier - CEA Paris-Saclay
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
E. Hays - Goddard Space Flight Center
R. E. Hughes - The Ohio State University
M. S. Jackson - KTH Royal Institute of Technology
G. Jóhannesson - Kavli Institute for Particle Astrophysics and Cosmology
A. S. Johnson - SLAC National Accelerator Laboratory
W. N. Johnson - United States Naval Research Laboratory
T. Kamae - SLAC National Accelerator Laboratory
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
F. Longo - Istituto Nazionale di Fisica Nucleare, Sezione di 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
A. Makeev - United States Naval Research Laboratory
M. N. Mazziotta - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
J. E. Mcenery - Goddard Space Flight Center
C. Meurer - AlbaNova
P. F. Michelson - Kavli Institute for Particle Astrophysics and Cosmology
W. Mitthumsiri - Kavli Institute for Particle Astrophysics and Cosmology
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 - SLAC National Accelerator Laboratory
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
D. Paneque - Kavli Institute for Particle Astrophysics and Cosmology
D. Parent - Laboratoire de Physique des deux infinis 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 - Institut National de Physique Nucléaire et de Physique des Particules
T. A. Porter - University of California, Santa Cruz
S. Rainò - Polytechnic University of Bari
R. Rando - University of Padua
M. Razzano - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
A. Reimer - Universität Innsbruck
O. Reimer - Universität Innsbruck
T. Reposeur - Laboratoire de Physique des deux infinis Bordeaux
A. Y. Rodriguez - Institute of Space Sciences
M. Roth - University of Washington
F. Ryde - KTH Royal Institute of Technology
H. F.-W. Sadrozinski - University of California, Santa Cruz
D. Sanchez - Laboratoire Leprince-Ringuet
A. Sander - The Ohio State University
P. M. Saz Parkinson
J. D. Scargle - Ames Research Center
C. Sgrò - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
M. S. Shaw - Kavli Institute for Particle Astrophysics and Cosmology
E. J. Siskind - Real Time Tomography
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 - Stanford University
H. Takahashi - Hiroshima University
T. Tanaka - Stanford University
J. B. Thayer - Stanford University
J. G. Thayer - SLAC National Accelerator Laboratory
D. J. Thompson - Goddard Space Flight Center
L. Tibaldo - Université Paris Cité
D. F. Torres - Institute of Space Sciences
G. Tosti - Istituto Nazionale di Fisica Nucleare, Sezione di Perugia
A. Tramacere - Consorzio Interuniversitario Fisica Spaziale
Y. Uchiyama - Institute of Space and Astronautical Science
T. L. Usher - Kavli Institute for Particle Astrophysics and Cosmology
V. Vasileiou - University of Maryland, Baltimore County
N. Vilchez - Université Toulouse III - Paul Sabatier
V. Vitale - Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
A. P. Waite - Kavli Institute for Particle Astrophysics and Cosmology
P. Wang - SLAC National Accelerator Laboratory
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
S. D. Barber - University of Oklahoma
D. M. Terndrup - U.S. National Science Foundation
Publication Details: The Astrophysical Journal Letters, Vol.708, pp.L100-L106
Identifiers: 9941384109311
Academic Unit: Université de Montpellier
Language: English
Resource Type: Journal article
Local Fields: in2p3-00460590