Skip to Main content Skip to Navigation
Journal articles

Fermi/LAT discovery of gamma-ray emission from the flat-spectrum radio quasar PKS 1454-354

A.A. Abdo Markus Ackermann W. B. Atwood Magnus Axelsson Luca Baldini Jean Ballet 1 Guido Barbiellini D. Bastieri B. M. Baughman K. Bechtol R. Bellazzini B. Berenji R. D. Blandford E. D. Bloom G. Bogaert 2 E. Bonamente A. W. Borgland J. Bregeon A. Brez M. Brigida Pascal Bruel 2 T. H. Burnett G. A. Caliandro R. A. Cameron P. A. Caraveo J. M. Casandjian 1 E. Cavazzuti C. Cecchi E. Charles A. Chekhtman C. C. Cheung J. Chiang S. Ciprini R. Claus J. Cohen-Tanugi 3 S. Colafrancesco J. Conrad L. Costamante S. Cutini C. D. Dermer A. de Angelis F. de Palma S. W. Digel E. Do Couto E Silva P. S. Drell R. Dubois D. Dumora 4 Y. Edmonds C. Farnier 3 C. Favuzzi E. C. Ferrara P. Fleury 2 W. B. Focke L. Foschini M. Frailis L. Fuhrmann Y. Fukazawa S. Funk P. Fusco F. Gargano D. Gasparrini N. Gehrels S. Germani B. Giebels 2 N. Giglietto F. Giordano M. Giroletti T. Glanzman G. Godfrey I. A. Grenier 1 M.-H. Grondin 4 J. E. Grove L. Guillemot 4 S. Guiriec 3 A. K. Harding R. C. Hartman M. Hayashida E. Hays S. E. Healey R. E. Hughes G. J'Ohannesson A. S. Johnson R. P. Johnson W. N. Johnson M. Kadler T. Kamae H. Katagiri J. Kataoka N. Kawai M. Kerr J. Kn¨odlseder 5 M. L. Kocian F. Kuehn M. Kuss L. Latronico S.-H. Lee M. Lemoine-Goumard 4 F. Longo F. Loparco B. Lott 4 M. N. Lovellette P. Lubrano G. M. Madejski A. Makeev M. Marelli M. N. Mazziotta J. E. Mcenery S. Mcglynn 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 E. Nuss 3 M. Ohno T. Ohsugi R. Ojha N. Omodei E. Orlando J. F. Ormes D. Paneque J. H. Panetta D. Parent 4 M. Pepe M. Pesce-Rollins F. Piron 3 T.A. Porter S. Rain'O R. Rando M. Razzano A. Reimer O. Reimer T. Reposeur 4 L. C. Reyes S. Ritz L. S. Rochester A. Y. Rodriguez R. W. Romani M. Roth F. Ryde H. F.-W. Sadrozinski R. Sambruna D. Sanchez 2 A. Sander P. M. Saz Parkinson C. Sgr'O M. S. Shaw E. J. Siskind David Stanley Smith 4 P. D. Smith G. Spandre P. Spinelli Jean-Luc Starck M. S. Strickman D. J. Suson H. Tajima H. Takahashi T. Tanaka J. B. Thayer J. G. Thayer D. J. Thompson L. Tibaldo O. Tibolla D. F. Torres G. Tosti A. Tramacere T. L. Usher N. Vilchez 5 V. Vitale A. P. Waite P. Wang B. L. Winer K. S. Wood T. Ylinen M. Ziegler P. G. Edwards M. M. Chester D. N. Burrows M. Hauser S. Wagner
Abstract : We report the discovery by the Large Area Telescope (LAT) onboard the Fermi Gamma-ray Space Telescope of high-energy gamma-ray (GeV) emission from the flat-spectrum radio quasar PKS 1454-354 (z=1.424). On 4 September 2008 the source rose to a peak flux of (3.5 +/- 0.7)x 10^-6 ph cm^-2 s^-1 (E > 100 MeV) on a time scale of hours and then slowly dropped over the following two days. No significant spectral changes occurred during the flare. Fermi/LAT observations also showed that PKS 1454-354 is the most probable counterpart of the unidentified EGRET source 3EG J1500-3509. Multiwavelength measurements performed during the following days (7 September with Swift; 6-7 September with the ground-based optical telescope ATOM; 13 September with the Australia Telescope Compact Array) resulted in radio, optical, UV and X-ray fluxes greater than archival data, confirming the activity of PKS 1454-354.
Complete list of metadatas

http://hal.in2p3.fr/in2p3-00378187
Contributor : Virginie Mas <>
Submitted on : Thursday, April 23, 2009 - 4:25:43 PM
Last modification on : Saturday, April 11, 2020 - 1:53:35 AM

Links full text

Identifiers

Citation

A.A. Abdo, Markus Ackermann, W. B. Atwood, Magnus Axelsson, Luca Baldini, et al.. Fermi/LAT discovery of gamma-ray emission from the flat-spectrum radio quasar PKS 1454-354. The Astrophysical Journal, American Astronomical Society, 2009, 697, pp.934-941. ⟨10.1088/0004-637X/697/1/934⟩. ⟨in2p3-00378187⟩

Share

Metrics

Record views

474