AGILE detection of extreme<i>γ</i>-ray activity from the blazar PKS 1510-089 during March 2009
F. D’AmmandoDip. di Fisica, Univ. di Roma “Tor Vergata”, via della Ricerca Scientifica 1, 00133 Roma, ItalyC. M. RaiteriINAF, Oss. Astronomico di Torino, viaOsservatorio 20, 10025 Pino Torinese, Torino, ItalyM. VillataINAF, Oss. Astronomico di Torino, viaOsservatorio 20, 10025 Pino Torinese, Torino, ItalyP. RomanoG. PucellaENEA–Frascati, via E. Fermi 45, 00044 Frascati, Roma, ItalyH. A. KrimmNASA / Goddard Space Flight Center, Greenbelt, MD 20771, USAS. CovinoINAF, Oss. Astronomico Brera, via Bianchi 46, 23807 Merate (LC), ItalyM. OrientiINAF-Istituto di Radioastronomia, via P. Gobetti 101, 40129 Bologna, ItalyG. GiovanniniINAF-Istituto di Radioastronomia, via P. Gobetti 101, 40129 Bologna, ItalyS. VercelloneE. PianINAF Osservatorio Astronomico di Trieste, via G. Tiepolo 11, 34143, ItalyI. DonnarummaINAF/IASF–Roma, via Fosso del Cavaliere 100, 00133 Roma, ItalyV. VittoriniINAF/IASF–Roma, via Fosso del Cavaliere 100, 00133 Roma, ItalyM. TavaniDip. di Fisica, Univ. di Roma “Tor Vergata”, via della Ricerca Scientifica 1, 00133 Roma, ItalyA. ArganINAF/IASF–Roma, via Fosso del Cavaliere 100, 00133 Roma, ItalyG. BarbielliniDip. di Fisica and INFN Trieste, via Valerio 2, 34127 Trieste, ItalyF. BoffelliDip. di Fisica Nucleare e Teorica, Univ. di Pavia, via Bassi 6, 27100 Pavia, ItalyA. BulgarelliINAF/IASF–Bologna, via Gobetti 101, 40129 Bologna, ItalyP. A. CaraveoINAF/IASF–Milano, via E. Bassini 15, 20133 Milano, ItalyP. W. CattaneoINFN–Pavia, via Bassi 6, 27100 Pavia, ItalyA. ChenINAF/IASF–Milano, via E. Bassini 15, 20133 Milano, ItalyV. CoccoINAF/IASF–Roma, via Fosso del Cavaliere 100, 00133 Roma, ItalyE. CostaINAF/IASF–Roma, via Fosso del Cavaliere 100, 00133 Roma, ItalyE. Del MonteINAF/IASF–Roma, via Fosso del Cavaliere 100, 00133 Roma, ItalyG. De ParisINAF/IASF–Roma, via Fosso del Cavaliere 100, 00133 Roma, ItalyG. Di CoccoINAF/IASF–Bologna, via Gobetti 101, 40129 Bologna, ItalyY. EvangelistaINAF/IASF–Roma, via Fosso del Cavaliere 100, 00133 Roma, ItalyM. FerociINAF/IASF–Roma, via Fosso del Cavaliere 100, 00133 Roma, ItalyA. FerrariDip. di Fisica Generale dell’Universitá, via P. Giuria 1, 10125 Torino, ItalyM. FioriniINAF/IASF–Milano, via E. Bassini 15, 20133 Milano, ItalyT. FroyslandDip. di Fisica, Univ. di Roma “Tor Vergata”, via della Ricerca Scientifica 1, 00133 Roma, ItalyM. FruttiINAF/IASF–Roma, via Fosso del Cavaliere 100, 00133 Roma, ItalyF. FuschinoINAF/IASF–Bologna, via Gobetti 101, 40129 Bologna, ItalyM. GalliENEA–Bologna, via dei Martiri di Monte Sole 4, 40129 Bologna, ItalyF. GianottiINAF/IASF–Bologna, via Gobetti 101, 40129 Bologna, ItalyA. GiulianiINAF/IASF–Milano, via E. Bassini 15, 20133 Milano, ItalyC. LabantiINAF/IASF–Bologna, via Gobetti 101, 40129 Bologna, ItalyI. LapshovINAF/IASF–Roma, via Fosso del Cavaliere 100, 00133 Roma, ItalyF. LazzarottoINAF/IASF–Roma, via Fosso del Cavaliere 100, 00133 Roma, ItalyP. LipariINFN–Roma “La Sapienza”, Piazzale A. Moro 2, 00185 Roma, ItalyF. LongoDip. di Fisica and INFN Trieste, via Valerio 2, 34127 Trieste, ItalyM. MarisaldiINAF/IASF–Bologna, via Gobetti 101, 40129 Bologna, ItalyS. MereghettiINAF/IASF–Milano, via E. Bassini 15, 20133 Milano, ItalyA. MorselliINFN–Roma “Tor Vergata”, via della Ricerca Scientifica 1, 00133 Roma, ItalyL. PaccianiINAF/IASF–Roma, via Fosso del Cavaliere 100, 00133 Roma, ItalyA. PellizzoniINAF–Oss. Astronomico di Cagliari, loc. Poggio dei Pini, strada 54, 09012 Capoterra (CA), ItalyF. PerottiINAF/IASF–Milano, via E. Bassini 15, 20133 Milano, ItalyG. PianoDip. di Fisica, Univ. di Roma “Tor Vergata”, via della Ricerca Scientifica 1, 00133 Roma, ItalyP. PicozzaINFN–Roma “Tor Vergata”, via della Ricerca Scientifica 1, 00133 Roma, ItalyM. PiliaINAF–Oss. Astronomico di Cagliari, loc. Poggio dei Pini, strada 54, 09012 Capoterra (CA), ItalyG. PorrovecchioINAF/IASF–Roma, via Fosso del Cavaliere 100, 00133 Roma, ItalyM. PrestDip. di Fisica, Univ. dell’Insubria, via Valleggio 11, 22100 Como, ItalyM. RapisardaENEA–Frascati, via E. Fermi 45, 00044 Frascati, Roma, ItalyA. RappoldiINFN–Pavia, via Bassi 6, 27100 Pavia, ItalyA. RubiniINAF/IASF–Roma, via Fosso del Cavaliere 100, 00133 Roma, ItalyS. SabatiniDip. di Fisica, Univ. di Roma “Tor Vergata”, via della Ricerca Scientifica 1, 00133 Roma, ItalyP. SoffittaINAF/IASF–Roma, via Fosso del Cavaliere 100, 00133 Roma, ItalyE. StrianiDip. di Fisica, Univ. di Roma “Tor Vergata”, via della Ricerca Scientifica 1, 00133 Roma, ItalyM. TrifoglioINAF/IASF–Bologna, via Gobetti 101, 40129 Bologna, ItalyA. TroisINAF/IASF–Roma, via Fosso del Cavaliere 100, 00133 Roma, ItalyE. VallazzaDip. di Fisica and INFN Trieste, via Valerio 2, 34127 Trieste, ItalyA. ZambraINAF/IASF–Roma, via Fosso del Cavaliere 100, 00133 Roma, ItalyD. ZanelloINFN–Roma “La Sapienza”, Piazzale A. Moro 2, 00185 Roma, ItalyI. AgudoInstitute for Astrophysical Research, Boston University, 725 Commonwealth Avenue, Boston, MA 02215, USAH. D. AllerDepartment of Astronomy, University of Michigan, Ann Arbor, MI 48109, USAM. F. AllerDepartment of Astronomy, University of Michigan, Ann Arbor, MI 48109, USAA. A. ArkharovPulkovo Observatory, Russian Academy of Sciences, 196140, St.-Petersburg, RussiaU. BachMPIfR, 53121 Bonn, GermanyE. BenítezInstituto de Astronomia, Universidad Nacional Autonoma de Mexico, D. F. Mexico, MexicoA. BerdyuginTuorla Observatory, Department of Physics and Astronomy, University of Turku, Väisäläntie 20, 21500 Piikkiö, FinlandD. BlinovAstron. Inst., St.-Petersburg State Univ., 198504 St.-Petersburg, RussiaC. S. BuemiINAF – Osservatorio Astrofisico di Catania, via S. Sofia 78, 95123 Catania, ItalyWen-Ping ChenInstitute of Astronomy, National Central University, TaiwanA. Di PaolaINAF, Osservatorio Astronomico di Roma, via di Frascati 33, 00040, Monte Porzio Catone, ItalyM. DolciINAF, Osservatorio Astronomico di Collurania, via Mentore Maggini, 64100 Teramo, ItalyE. FornéL. FuhrmannMPIfR, 53121 Bonn, GermanyJosé L. GómezInstituto de Astrofísica de Andalucía, CSIC, Apartado 3004, 18080 Granada, SpainMark GurwellHarvard-Smithsonian Center for Astrophysics, Cambridge, Garden st. 60, MA 02138, USAB. JordanSchool Of Cosmic Physics, Dublin Institute For Advanced Studies, IrelandS. G. JorstadInstitute for Astrophysical Research, Boston University, 725 Commonwealth Avenue, Boston, MA 02215, USAJ. HeidtD. HiriartInstituto de Astronomia, Universidad Nacional Autonoma de Mexico, 2280 Ensenada, B.C. Mexico, MexicoT. HovattaAalto University Metsähovi Radio Observatory, Metsähovintie 114, 02540 Kymälä, FinlandH. Y. HsiaoLulin Observatory, Institute of Astronomy, National Central University, TaiwanG. N. KimeridzeAbastumani Observatory, 383762 Abastumani, GeorgiaT. S. KonstantinovaAstron. Inst., St.-Petersburg State Univ., 198504 St.-Petersburg, RussiaE. N. KopatskayaAstron. Inst., St.-Petersburg State Univ., 198504 St.-Petersburg, RussiaE. KoptelovaInstitute of Astronomy, National Central University, TaiwanO. M. KurtanidzeAbastumani Observatory, 383762 Abastumani, GeorgiaS. O. KurtanidzeAbastumani Observatory, 383762 Abastumani, GeorgiaV. M. LarionovAstron. Inst., St.-Petersburg State Univ., 198504 St.-Petersburg, RussiaA. LähteenmäkiAalto University Metsähovi Radio Observatory, Metsähovintie 114, 02540 Kymälä, FinlandP. LetoINAF – Osservatorio Astrofisico di Catania, via S. Sofia 78, 95123 Catania, ItalyE. LindforsTuorla Observatory, Department of Physics and Astronomy, University of Turku, Väisäläntie 20, 21500 Piikkiö, FinlandAlan P. MarscherInstitute for Astrophysical Research, Boston University, 725 Commonwealth Avenue, Boston, MA 02215, USAB. McBreenSchool Of Cosmic Physics, Dublin Institute For Advanced Studies, IrelandI. McHardyDepartment of Physics and Astronomy, University of Southampton S017 1BJ, UKD. A. MorozovaAstron. Inst., St.-Petersburg State Univ., 198504 St.-Petersburg, RussiaK. NilssonFinnish Centre for Astronomy with ESO (FINCA), University of Turku, 21550 Piikkiö, Finland
2011en
ABI
Abstract
We report on the extreme γ-ray activity from the flat spectrum radio quasar (FSRQ) PKS 1510−089 observed by the AGILE satellite in March 2009. In the same period a radio-to-optical monitoring of the source was provided by the GASP–WEBT and REM facilities. In the radio band we made use also of multi-epoch 15-GHz Very Long Baseline Array data from the MOJAVE Program to get information on the parsec-scale structure. Moreover, several Swift target of opportunity observations were triggered, adding important information on the source behaviour from optical/UV to hard X-rays. We paid particular attention to the calibration of the Swift/UVOT data to make it suitable to the blazars spectra. Simultaneous observations from radio to γ rays allowed us to study in detail the correlation among the emission variability at differentfrequencies and to investigate the mechanisms at work during this high activity state of the source.
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Citations and references
Cited by 30 references