Maqola

The GASP-WEBT monitoring of 3C 454.3 during the 2008 optical-to-radio and γ-ray outburst

M. VillataINAF - Osservatorio Astronomico di Torino, ItalyC. M. RaiteriINAF - Osservatorio Astronomico di Torino, ItalyMark GurwellHarvard-Smithsonian Center for Astrophysics, MA, USAV. M. LarionovIsaac Newton Institute of Chile, St.-Petersburg Branch, RussiaO. M. KurtanidzeAbastumani Astrophysical Observatory, GeorgiaM. F. AllerDepartment of Astronomy, University of Michigan, MI, USAA. LähteenmäkiMetsähovi Radio Observatory, Helsinki University of Technology TKK, FinlandWen-Ping ChenInstitute of Astronomy, National Central University, TaiwanK. NilssonTuorla Observatory, Department of Physics and Astronomy, University of Turku, FinlandI. AgudoInstituto de Astrofísica de Andalucía, CSIC, SpainH. D. AllerDepartment of Astronomy, University of Michigan, MI, USAA. A. ArkharovPulkovo Observatory, RussiaU. BachMax-Planck-Institut für Radioastronomie, GermanyR. BachevInstitute of Astronomy, Bulgarian Academy of Sciences, BulgariaP. BeltrameE. BenítezInstituto de Astronomía, Universidad Nacional Autónoma de México, MexicoC. S. BuemiINAF - Osservatorio Astrofisico di Catania, ItalyM. BöttcherAstrophysical Institute, Department of Physics and Astronomy, Ohio University, OH, USAP. CalcideseOsservatorio Astronomico della Regione Autonoma Valle d'Aosta, ItalyD. CapezzaliArmenzano Astronomical Observatory, ItalyD. CarosatiArmenzano Astronomical Observatory, ItalyD. Da RioA. Di PaolaINAF - Osservatorio Astronomico di Roma, ItalyM. DolciINAF - Osservatorio Astronomico di Collurania Teramo, ItalyD. DultzinInstituto de Astronomía, Universidad Nacional Autónoma de México, MexicoE. FornéJosé L. GómezInstituto de Astrofísica de Andalucía, CSIC, SpainV. A. Hagen‐ThornAstronomical Institute, St.-Petersburg State University, RussiaA. HalkolaTuorla Observatory, Department of Physics and Astronomy, University of Turku, FinlandJ. HeidtD. HiriartInstituto de Astronomía, Universidad Nacional Autónoma de México, MexicoT. HovattaMetsähovi Radio Observatory, Helsinki University of Technology TKK, FinlandH. Y. HsiaoInstitute of Astronomy, National Central University, TaiwanS. G. JorstadInstitute for Astrophysical Research, Boston University, MA, USAG. N. KimeridzeAbastumani Astrophysical Observatory, GeorgiaT. S. KonstantinovaAstronomical Institute, St.-Petersburg State University, RussiaE. N. KopatskayaAstronomical Institute, St.-Petersburg State University, RussiaE. KoptelovaInstitute of Astronomy, National Central University, TaiwanP. LetoINAF - Osservatorio Astrofisico di Catania, ItalyR. LigustriE. LindforsTuorla Observatory, Department of Physics and Astronomy, University of Turku, FinlandJ. LópezInstituto de Astronomía, Universidad Nacional Autónoma de México, MexicoAlan P. MarscherInstitute for Astrophysical Research, Boston University, MA, USAMichael MommertR. MújicaINAOE, MexicoM. G. NikolashviliAbastumani Astrophysical Observatory, GeorgiaN. PalmaAstrophysical Institute, Department of Physics and Astronomy, Ohio University, OH, USAM. PasanenTuorla Observatory, Department of Physics and Astronomy, University of Turku, FinlandMar Roca-SogorbInstituto de Astrofísica de Andalucía, CSIC, SpainJ. AgramuntP. RoustazadehAstrophysical Institute, Department of Physics and Astronomy, Ohio University, OH, USAA. C. SadunDepartment of Physics, University of Colorado Denver, CO, USAJ. SainoTuorla Observatory, Department of Physics and Astronomy, University of Turku, FinlandL. A. SiguaAbastumani Astrophysical Observatory, GeorgiaM. SorciaInstituto de Astronomía, Universidad Nacional Autónoma de México, MexicoL. O. TakaloTuorla Observatory, Department of Physics and Astronomy, University of Turku, FinlandM. TornikoskiMetsähovi Radio Observatory, Helsinki University of Technology TKK, FinlandC. TrigilioINAF - Osservatorio Astrofisico di Catania, ItalyR. TurchettiG. UmanaINAF - Osservatorio Astrofisico di Catania, Italy

2009en

ABI

Annotatsiya

Context. Since 2001, the radio quasar 3C 454.3 has undergone a period of high optical activity, culminating in the brightest optical state ever observed, during the 2004-2005 outburst. The Whole Earth Blazar Telescope (WEBT) consortium has carried out several multifrequency campaigns to follow the source behaviour. Aims. The GLAST-AGILE Support Program (GASP) was born from the WEBT to provide long-term continuous optical-to-radio monitoring of a sample of -loud blazars, during the operation of the AGILE and GLAST (now known as Fermi GST) -ray satellites. The main aim is to shed light on the mechanisms producing the high-energy radiation, through correlation analysis with the low-energy emission. Thus, since 2008 the monitoring task on 3C 454.3 passed from the WEBT to the GASP, while both AGILE and Fermi detected strong -ray emission from the source. Methods. We present the main results obtained by the GASP at optical, mm, and radio frequencies in the 2008-2009 season, and compare them with the WEBT results from previous years.

Identifikatorlar

DOI: 10.1051/0004-6361/200912732

Iqtiboslar va manbalar

9 ta iqtibos0 ta foydalanilgan manba

Koʻrsatkichlar — AkademScholar · Tez orada