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SUZAKU OBSERVATIONS...
SUZAKU OBSERVATIONS OF LUMINOUS QUASARS : REVEALING THE NATURE OF HIGH-ENERGY BLAZAR EMISSION IN LOW-LEVEL ACTIVITY STATES
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Abdo, A. A. (author)
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Ackermann, M. (author)
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Ajello, M. (author)
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show more...
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Antolini, E. (author)
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Baldini, L. (author)
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Ballet, J. (author)
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Barbiellini, G. (author)
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Baring, M. G. (author)
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Bastieri, D. (author)
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Bechtol, K. (author)
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Bellazzini, R. (author)
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Berenji, B. (author)
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Blandford, R. D. (author)
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Bloom, E. D. (author)
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Bonamente, E. (author)
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Borgland, A. W. (author)
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Bregeon, J. (author)
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Brez, A. (author)
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Brigida, M. (author)
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Bruel, P. (author)
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Buehler, R. (author)
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Buson, S. (author)
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Caliandro, G. A. (author)
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Cameron, R. A. (author)
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Carrigan, S. (author)
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Casandjian, J. M. (author)
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Cavazzuti, E. (author)
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Cecchi, C. (author)
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Celik, Oe. (author)
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Chekhtman, A. (author)
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Chen, A. W. (author)
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Chiang, J. (author)
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Ciprini, S. (author)
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Claus, R. (author)
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Cohen-Tanugi, J. (author)
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Colafrancesco, S. (author)
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- Conrad, Jan (author)
- Stockholms universitet,Fysikum
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Cutini, S. (author)
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Dermer, C. D. (author)
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de Palma, F. (author)
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Digel, S. W. (author)
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do Couto e Silva, E. (author)
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Drell, P. S. (author)
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Dubois, R. (author)
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Dumora, D. (author)
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Farnier, C. (author)
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Favuzzi, C. (author)
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Fegan, S. J. (author)
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Ferrara, E. C. (author)
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Focke, W. B. (author)
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Frailis, M. (author)
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Fukazawa, Y. (author)
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Fusco, P. (author)
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Gargano, F. (author)
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Gasparrini, D. (author)
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Gehrels, N. (author)
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Giebels, B. (author)
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Giglietto, N. (author)
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Giommi, P. (author)
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Giordano, F. (author)
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Giroletti, M. (author)
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Glanzman, T. (author)
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Godfrey, G. (author)
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Grandi, P. (author)
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Grenier, I. A. (author)
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Guillemot, L. (author)
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Guiriec, S. (author)
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Hadasch, D. (author)
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Harding, A. K. (author)
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Hayashida, M. (author)
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Horan, D. (author)
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Hughes, R. E. (author)
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Itoh, R. (author)
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- Jackson, Miranda S. (author)
- KTH,Fysik
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Johannesson, G. (author)
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Johnson, A. S. (author)
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Johnson, W. N. (author)
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Kamae, T. (author)
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Katagiri, H. (author)
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Kataoka, J. (author)
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Kawai, N. (author)
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Knoedlseder, J. (author)
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Kuss, M. (author)
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Lande, J. (author)
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Latronico, L. (author)
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Longo, F. (author)
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Loparco, F. (author)
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Lott, B. (author)
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Lovellette, M. N. (author)
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Lubrano, P. (author)
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Madejski, G. M. (author)
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Makeev, A. (author)
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Mazziotta, M. N. (author)
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McEnery, J. E. (author)
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- McGlynn, Sinead (author)
- KTH,Fysik
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- Meurer, C. (author)
- Stockholms universitet,Fysikum
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Michelson, P. F. (author)
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Mitthumsiri, W. (author)
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Mizuno, T. (author)
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Monte, C. (author)
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Monzani, M. E. (author)
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Morselli, A. (author)
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Moskalenko, I. V. (author)
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Murgia, S. (author)
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Nestoras, I. (author)
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Nolan, P. L. (author)
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Norris, J. P. (author)
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Nuss, E. (author)
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Ohsugi, T. (author)
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Okumura, A. (author)
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Orlando, E. (author)
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Ormes, J. F. (author)
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Ozaki, M. (author)
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Paneque, D. (author)
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Panetta, J. H. (author)
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Parent, D. (author)
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Pelassa, V. (author)
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Pepe, M. (author)
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Pesce-Rollins, M. (author)
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Piron, F. (author)
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Porter, T. A. (author)
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Raino, S. (author)
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Rando, R. (author)
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Razzano, M. (author)
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Reimer, A. (author)
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Reimer, O. (author)
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Reyes, L. C. (author)
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Rodriguez, A. Y. (author)
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Roth, M. (author)
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- Ryde, Felix (author)
- KTH,Partikel- och astropartikelfysik
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Sadrozinski, H. F. -W (author)
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Sambruna, R. (author)
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Sander, A. (author)
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Sato, R. (author)
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Sgro, C. (author)
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Shaw, M. S. (author)
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Siskind, E. J. (author)
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Smith, P. D. (author)
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Spandre, G. (author)
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Spinelli, P. (author)
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Stawarz, L. (author)
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Stecker, F. W. (author)
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Strickman, M. S. (author)
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Suson, D. J. (author)
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Takahashi, H. (author)
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Takahashi, T. (author)
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Tanaka, T. (author)
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Thayer, J. B. (author)
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Thayer, J. G. (author)
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Thompson, D. J. (author)
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Tibolla, O. (author)
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Torres, D. F. (author)
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Tosti, G. (author)
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Tramacere, A. (author)
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Uchiyama, Y. (author)
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Usher, T. L. (author)
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Vasileiou, V. (author)
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Vilchez, N. (author)
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Villata, M. (author)
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Vitale, V. (author)
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von Kienlin, A. (author)
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Waite, A. P. (author)
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Wang, P. (author)
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Winer, B. L. (author)
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Wood, K. S. (author)
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- Yang, Zhaoyu (author)
- Stockholms universitet,Fysikum
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- Ylinen, Tomi (author)
- KTH,Fysik
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Ziegler, M. (author)
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Tavecchio, F. (author)
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Sikora, M. (author)
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Schady, P. (author)
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Roming, P. (author)
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Chester, M. M. (author)
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Maraschi, L. (author)
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(creator_code:org_t)
- 2010
- 2010
- English.
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In: Astrophysical Journal. - 0004-637X .- 1538-4357. ; 716:1, s. 835-849
- Related links:
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https://urn.kb.se/re...
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show more...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
Close
- We present the results from the Suzaku X-ray observations of five flat-spectrum radio quasars (FSRQs), namely PKS 0208-512, Q 0827+243, PKS 1127-145, PKS 1510-089, and 3C 454.3. All these sources were additionally monitored simultaneously or quasi-simultaneously by the Fermi satellite in gamma rays and the Swift UVOT in the UV and optical bands, respectively. We constructed their broadband spectra covering the frequency range from 10(14) Hz up to 10(25) Hz, and those reveal the nature of high-energy emission of luminous blazars in their low-activity states. The analyzed X-ray spectra are well fitted by a power-law model with photoelectric absorption. In the case of PKS 0208-512, PKS 1127-145, and 3C 454.3, the X-ray continuum showed indication of hardening at low energies. Moreover, when compared with the previous X-ray observations, we see a significantly increasing contribution of low-energy photons to the total X-ray fluxes when the sources are getting fainter. The same behavior can be noted in the Suzaku data alone. A likely explanation involves a variable, flat-spectrum component produced via inverse-Compton emission, plus an additional, possibly steady soft X-ray component prominent when the source gets fainter. This soft X-ray excess is represented either by a steep power-law (photon indices Gamma similar to 3-5) or a blackbody-type emission with temperatures kT similar to 0.1-0.2 keV. We model the broadband spectra of the five observed FSRQs using synchrotron self-Compton and/or external-Compton radiation models. Our modeling suggests that the difference between the low-and high-activity states in luminous blazars is due to the different total kinetic power of the jet, most likely related to varying bulk Lorentz factor of the outflow within the blazar emission zone.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- galaxies: active
- galaxies: jets
- radiation mechanisms: non-thermal
- X-rays: galaxies
- NATURAL SCIENCES
- NATURVETENSKAP
- Astronomy and astrophysics
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
-
Abdo, A. A.
-
Ackermann, M.
-
Ajello, M.
-
Antolini, E.
-
Baldini, L.
-
Ballet, J.
-
show more...
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Barbiellini, G.
-
Baring, M. G.
-
Bastieri, D.
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Bechtol, K.
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Bellazzini, R.
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Berenji, B.
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Blandford, R. D.
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Bloom, E. D.
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Bonamente, E.
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Borgland, A. W.
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Bregeon, J.
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Brez, A.
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Brigida, M.
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Bruel, P.
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Buehler, R.
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Buson, S.
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Caliandro, G. A.
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Cameron, R. A.
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Carrigan, S.
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Casandjian, J. M ...
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Cavazzuti, E.
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Cecchi, C.
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Celik, Oe.
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Chekhtman, A.
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Chen, A. W.
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Chiang, J.
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Ciprini, S.
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Claus, R.
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Cohen-Tanugi, J.
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Colafrancesco, S ...
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Conrad, Jan
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Cutini, S.
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Dermer, C. D.
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de Palma, F.
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Digel, S. W.
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do Couto e Silva ...
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Drell, P. S.
-
Dubois, R.
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Dumora, D.
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Farnier, C.
-
Favuzzi, C.
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Fegan, S. J.
-
Ferrara, E. C.
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Focke, W. B.
-
Frailis, M.
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Fukazawa, Y.
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Fusco, P.
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Gargano, F.
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Gasparrini, D.
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Gehrels, N.
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Giebels, B.
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Giglietto, N.
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Giommi, P.
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Giordano, F.
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Giroletti, M.
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Glanzman, T.
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Godfrey, G.
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Grandi, P.
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Grenier, I. A.
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Guillemot, L.
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Guiriec, S.
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Hadasch, D.
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Harding, A. K.
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Hayashida, M.
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Horan, D.
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Hughes, R. E.
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Itoh, R.
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Jackson, Miranda ...
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Johannesson, G.
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Johnson, A. S.
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Johnson, W. N.
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Kamae, T.
-
Katagiri, H.
-
Kataoka, J.
-
Kawai, N.
-
Knoedlseder, J.
-
Kuss, M.
-
Lande, J.
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Latronico, L.
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Longo, F.
-
Loparco, F.
-
Lott, B.
-
Lovellette, M. N ...
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Lubrano, P.
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Madejski, G. M.
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Makeev, A.
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Mazziotta, M. N.
-
McEnery, J. E.
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McGlynn, Sinead
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Meurer, C.
-
Michelson, P. F.
-
Mitthumsiri, W.
-
Mizuno, T.
-
Monte, C.
-
Monzani, M. E.
-
Morselli, A.
-
Moskalenko, I. V ...
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Murgia, S.
-
Nestoras, I.
-
Nolan, P. L.
-
Norris, J. P.
-
Nuss, E.
-
Ohsugi, T.
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Okumura, A.
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Orlando, E.
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Ormes, J. F.
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Ozaki, M.
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Paneque, D.
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Panetta, J. H.
-
Parent, D.
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Pelassa, V.
-
Pepe, M.
-
Pesce-Rollins, M ...
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Piron, F.
-
Porter, T. A.
-
Raino, S.
-
Rando, R.
-
Razzano, M.
-
Reimer, A.
-
Reimer, O.
-
Reyes, L. C.
-
Rodriguez, A. Y.
-
Roth, M.
-
Ryde, Felix
-
Sadrozinski, H. ...
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Sambruna, R.
-
Sander, A.
-
Sato, R.
-
Sgro, C.
-
Shaw, M. S.
-
Siskind, E. J.
-
Smith, P. D.
-
Spandre, G.
-
Spinelli, P.
-
Stawarz, L.
-
Stecker, F. W.
-
Strickman, M. S.
-
Suson, D. J.
-
Takahashi, H.
-
Takahashi, T.
-
Tanaka, T.
-
Thayer, J. B.
-
Thayer, J. G.
-
Thompson, D. J.
-
Tibolla, O.
-
Torres, D. F.
-
Tosti, G.
-
Tramacere, A.
-
Uchiyama, Y.
-
Usher, T. L.
-
Vasileiou, V.
-
Vilchez, N.
-
Villata, M.
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Vitale, V.
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von Kienlin, A.
-
Waite, A. P.
-
Wang, P.
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Winer, B. L.
-
Wood, K. S.
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Yang, Zhaoyu
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Ylinen, Tomi
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Ziegler, M.
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Tavecchio, F.
-
Sikora, M.
-
Schady, P.
-
Roming, P.
-
Chester, M. M.
-
Maraschi, L.
-
show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Astrophysical Jo ...
- By the university
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Stockholm University
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Royal Institute of Technology