<i>FERMI</i>LARGE AREA TELESCOPE AND MULTI-WAVELENGTH OBSERVATIONS OF THE FLARING ACTIVITY OF PKS 1510-089 BETWEEN 2008 SEPTEMBER AND 2009 JUNE

Abdo, A. A.; Ackermann, M.; Agudo, I.; Ajello, M.; Allafort, A.; Aller, H. D.; Aller, M. F.; Antolini, E.; Архаров, А. А.; Axelsson, M.; Bach, U.; Baldini, Luca; Ballet, J.; Barbiellini, G.; Bastieri, D.; Bechtol, K.; Bellazzini, R.; Berdyugin, A.; Berenji, B.; Blandford, R. D.; Blinov, D.; Bloom, E. D.; Boettcher, Markus; Bonamente, E.; Borgland, A. W.; Bouvier, A.; Bregeon, J.; Brez, A.; Brigida, M.; Bruel, Pascal; Buehler, R.; Buemi, C. S.; Burnett, T. H.; Buson, S.; Caliandro, G. A.; Cameron, R. A.; Caraveo, P. A.; Carosati, D.; Carrigan, S.; Casandjian, J. M.; Cavazzuti, E.; Cecchi, C.; Çelik, Ö.; Chekhtman, A.; Chen, W. P.; Cheung, C. C.; Chiang, J.; Ciprini, S.; Claus, R.; Cohen-Tanugi, J.; Conrad, J.; Corbel, S.; Costamante, L.; Dermer, C. D.; Angelis, A. De; Palma, F. de; Donato, D.; Silva, E. do Couto e; Drell, P. S.; Dubois, R.; Dumora, D.; Farnier, C.; Favuzzi, C.; Fegan, S. J.; Ferrara, E. C.; Focke, W. B.; Forné, E.; Fortin, P.; Fukazawa, Yasushi; Funk, S.; Fusco, P.; Gargano, F.; Gasparrini, D.; Gehrels, N.; Germani, S.; Giebels, B.; Giglietto, N.; Giordano, F.; Giroletti, M.; Glanzman, T.; Godfrey, G.; Grenier, I. A.; Grove, J. E.; Guiriec, S.; Gurwell, M. A.; Gusbar, C.; Gómez, J. L.; Hadasch, D.; Hagen-Thorn, V. A.; Hayashida, M.; Hays, E.; Horan, D.; Hughes, R. E.; Jóhannesson, G.; Johnson, A. S.; Johnson, W. N.; Kamae, T.; Katagiri, H.; Kataoka, J.; Kawai, N.; Kimeridze, G. N.; Knödlseder, J.; Константинова, Т. С.; Kopatskaya, E. N.; Koptelova, E.; Kovalev, Y. Y.; Kurtanidze, O. M.; Kuss, M.; Lähteenmäki, A.; Landé, J.; Ларионов, В. М.; Ларионова, Е. Г.; Ларионова, Л. В.; Larsson, Stefan; Latronico, L.; Lee, S.-H.; Leto, P.; Lister, M. L.; Longo, F.; Loparco, F.; Lott, B.; Lovellette, M. N.; Lubrano, P.; Madejski, G. M.; Makeev, A.; Massaro, E.; Mazziotta, M. N.; McConville, W.; McEnery, J. E.; McHardy, I. M.; Michelson, P. F.; Mitthumsiri, W.; Mizuno, T.; Моисеев, А. А.; Monte, C.; Monzani, M. E.; Morozova, D. A.; Morselli, A.; Moskalenko, I. V.; Murgia, S.; Naumann-Godó, M.; Nikolashvili, M. G.; Nolan, P. L.; Norris, J. P.; Nuss, E.; Ohno, M.; Ohsugi, T.; Okumura, A.; Omodei, N.; Orlando, E.; Ormes, J. F.; Ozaki, Masanori; Paneque, D.; Panetta, J.; Parent, D.; Pasanen, M.; Pelassa, V.; Pepé, M.; Pesce-Rollins, M.; Piron, F.; Porter, T. A.; Pushkarev, A. B.; Rainò, S.; Raiteri, C. M.; Rando, R.; Razzano, M.; Reimer, O.; Reinthal, R.; Ripken, J.; Ritz, S.; Roca-Sogorb, Mar; Rodriguez, A. Y.; Roth, M.; Roustazadeh, P.; Ryde, F.; Sadrozinski, H. F-W.; Sander, A.; Scargle, J. D.; Sgrò, C.; Sigua, L. A.; Smith, P. D.; Sokolovsky, K. V.; Spandre, G.; Spinelli, P.; Starck, Jean-Luc; Strickman, M. S.; Suson, D. J.; Takahashi, H.; Takahashi, Tadayuki; Takalo, L. O.; Tanaka, Takaaki; Taylor, B.; Thayer, J. B.; Thayer, J. G.; Thompson, D. J.; Tibaldo, L.; Tornikoski, M.; Torres, D. F.; Tosti, G.; Tramacere, A.; Trigilio, C.; Troitsky, I. S.; Umana, G.; Usher, T.; Vandenbroucke, J.; Vasileiou, V.; Vilchez, N.; Villata, M.; Vitale, V.; Waite, A. P.; Wang, P.; Winer, B. L.; Wood, K. S.; Yang, Z.; Ylinen, T.; Ziegler, M.

doi:10.1088/0004-637x/721/2/1425

Cited by 108 publications

(161 citation statements)

References 60 publications

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“…This lack of correlation between X-ray and HE was reported in the multiwavelength data presented by A113, page 6 of 8 Abdo et al (2010), who also report a positive correlation between the HE and optical band. The last correlation is a signature of a leptonic single-zone scenario in which optical and γ-ray emission is produced by the same population of electrons.…”

Section: Discussionmentioning

confidence: 72%

“…The observations revealed a VHE emission up to 400 GeV. Abdo et al (2010) model the emission for energies below 100 GeV, without predictions for the VHE emission.…”

Section: Discussionmentioning

confidence: 91%

“…Abdo et al (2010) modeled the flares observed in 2009, but were unable to reproduce VHE emission due to assumption of BLR responsible for all HE emission.…”

Section: Discussionmentioning

confidence: 99%

“…As an alternative interpretation, Kataoka et al (2008) proposed that the observed soft X-ray excess might be explained as a contribution of the synchrotron self-Compton (SSC) component, which, although energetically inefficient, shows its presence in the soft X-ray range. Abdo et al (2010) have reported on multiwavelength observations of PKS 1510-089 during a high activity period between September 2008 and July 2010. These observations revealed a complex variability in optical, UV, X-ray, and γ-ray bands of time scaled down to 6-12 h. The study of the correlation of the variability in different energy ranges, performed by Abdo et al (2010), shows lack of a correlation between the γ rays and the X-rays, a weak correlation between the γ rays and the UV(R) band, and a significant correlation of γ rays with the optical band.…”

Section: Blazar Pks 1510-089mentioning

confidence: 99%

“…Abdo et al (2010) have reported on multiwavelength observations of PKS 1510-089 during a high activity period between September 2008 and July 2010. These observations revealed a complex variability in optical, UV, X-ray, and γ-ray bands of time scaled down to 6-12 h. The study of the correlation of the variability in different energy ranges, performed by Abdo et al (2010), shows lack of a correlation between the γ rays and the X-rays, a weak correlation between the γ rays and the UV(R) band, and a significant correlation of γ rays with the optical band. Abdo et al (2010) attempted to model three distinctive flares observed during the period with simultaneous data from radio to γ-ray energies.…”

Section: Blazar Pks 1510-089mentioning

confidence: 99%

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PKS 1510-089: a rare example of a flat spectrum radio quasar with a very high-energy emission

Barnacka

Moderski

Behera

et al. 2014

A&A

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Context. The blazar PKS 1510-089 is an example of flat spectrum radio quasars. High-energy emissions from this class of objects are believed to have been produced by IC radiation with seed photons originating from the broad line region. In such a paradigm, a lack of very high-energy emissions is expected because of the Klein-Nishina effect and strong absorption in the broad line region. Recent detection of at least three such blazars by Cherenkov telescopes has forced a revision of our understanding of these objects. Aims. We have aimed to model the observed spectral energy distribution of PKS 1510-089 from the high-energy flares in March 2009, during which very high-energy emission were also detected by H.E.S.S. Methods. We have applied the single-zone internal shock scenario to reproduce the multiwavelength spectrum of PKS 1510-089. We have followed the evolution of the electrons as they propagate along the jet and emit synchrotron and IC radiation. We have considered two sources of external photons: the dusty torus and the broad line region. We have also examined the effects of the gamma-gamma absorption of the high-energy photons both in the AGN environment (the broad line region and the dusty torus), as well as while traveling over cosmological distances: the extragalactic background light. Results. We have successfully modeled the observed spectrum of PKS 1510-089. In our model, the highest energy emission is the result of the Comptonization of the infrared photons from the dusty torus, thus avoiding Klein-Nishina regime, while the bulk of the emissions in the GeV range may still be dominated by the Comptonization of radiation coming from the broad line region.

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Section: Discussionmentioning

confidence: 72%

“…The observations revealed a VHE emission up to 400 GeV. Abdo et al (2010) model the emission for energies below 100 GeV, without predictions for the VHE emission.…”

Section: Discussionmentioning

confidence: 91%

“…Abdo et al (2010) modeled the flares observed in 2009, but were unable to reproduce VHE emission due to assumption of BLR responsible for all HE emission.…”

Section: Discussionmentioning

confidence: 99%

Section: Blazar Pks 1510-089mentioning

confidence: 99%

Section: Blazar Pks 1510-089mentioning

confidence: 99%

See 3 more Smart Citations

PKS 1510-089: a rare example of a flat spectrum radio quasar with a very high-energy emission

Barnacka

Moderski

Behera

et al. 2014

A&A

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Sources of GeV Photons and the Fermi Results

Dermer

2013

Astrophysics at Very High Energies

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Application of the MST clustering to the high energy γ $\gamma $ -ray sky. IV—Blazar candidates found as possible counterparts of photon clusters

Campana

Massaro

Bernieri

2016

Astrophys Space Sci

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We present the results of a cluster search in the Fermi -LAT Pass 8 γ-ray sky by means of the Minimum Spanning Tree algorithm, at energies higher than 10 GeV and at Galactic latitudes higher than 25• . The selected clusters have a minimum number of photons higher than or equal to 5, a high degree of concentration, and are without a clear corresponding counterpart in blazar catalogues. A sample of 30 possible γ-ray sources was obtained. These objects were verified by applying the standard Maximum Likelihood analysis on the Fermi -LAT data. A search for possible radio counterparts in a circle having a radius of 6 was performed, finding several interesting objects, the majority of them without optical spectroscopical data. These can be considered as new blazar candidates. Some of them were already noticed as possible blazars or Active Galactic Nuclei in previous surveys, but never associated with high energy emission. These possible counterparts are reported and their properties are discussed.

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FERMILARGE AREA TELESCOPE AND MULTI-WAVELENGTH OBSERVATIONS OF THE FLARING ACTIVITY OF PKS 1510-089 BETWEEN 2008 SEPTEMBER AND 2009 JUNE

Cited by 108 publications

References 60 publications

PKS 1510-089: a rare example of a flat spectrum radio quasar with a very high-energy emission

PKS 1510-089: a rare example of a flat spectrum radio quasar with a very high-energy emission

Sources of GeV Photons and the Fermi Results

Application of the MST clustering to the high energy γ $\gamma $ -ray sky. IV—Blazar candidates found as possible counterparts of photon clusters

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