Zobrazeno 1 - 10
of 928
pro vyhledávání: '"Fossati G"'
Publikováno v:
Journal of Translational Medicine, Vol 8, Iss Suppl 1, p P37 (2010)
Externí odkaz:
https://doaj.org/article/ecfa75b12c4647b7ad2dfd703eaa2f59
Autor:
Chatterjee, Ritaban, Fossati, G., Urry, C. M., Bailyn, C. D., Maraschi, L., Buxton, M., Bonning, E. W., Isler, J., Coppi, P.
The Yale/SMARTS optical-near-IR monitoring program has followed the variations in emission of the Fermi-LAT monitored blazars in the southern sky with closely spaced observations since 2008. We report the discovery of an optical-near-IR (OIR) outburs
Externí odkaz:
http://arxiv.org/abs/1303.2095
Autor:
Chatterjee, Ritaban, Fossati, G., Urry, C. M., Bailyn, C. D., Maraschi, L., Buxton, M., Bonning, E. W., Isler, J., Coppi, P.
We report the discovery of an anomalous flare in a bright blazar, namely, PKS 0208-512, one of the targets of the Yale/SMARTS optical-near-infrared (OIR) monitoring program of Fermi blazars. We identify three intervals during which PKS 0208-512 under
Externí odkaz:
http://arxiv.org/abs/1212.2629
The location of the Gamma-ray emission of powerful blazars is a matter of active debate. Is the location within the UV emitting sub-pc scale broad line region, or farther out at pc scales where the molecular torus IR emission dominates? We present a
Externí odkaz:
http://arxiv.org/abs/1202.6193
Autor:
Bonning, E. W., Urry, C. M., Bailyn, C., Buxton, M., Chatterjee, R., Coppi, P., Fossati, G., Isler, J., Maraschi, L.
We present multiwavelength data for twelve blazars observed from 2008-2010 as part of an ongoing optical-infrared photometric monitoring project. Sources were selected to be bright, southern (dec < 20 deg) blazars observed by the Fermi Gamma-Ray Spac
Externí odkaz:
http://arxiv.org/abs/1201.4380
Autor:
Chatterjee, Ritaban, Bailyn, C., Bonning, E. W., Buxton, M., Coppi, P., Fossati, G., Isler, J., Maraschi, L., Urry, C. M.
We present the time variability properties of a sample of six blazars, AO 0235+164, 3C 273, 3C 279, PKS 1510-089, PKS 2155-304, and 3C 454.3, at optical-IR as well as gamma-ray energies. These observations were carried out as a part of the Yale/SMART
Externí odkaz:
http://arxiv.org/abs/1101.3815
Autor:
Bonning, E. W., Bailyn, C., Urry, C. M., Buxton, M., Fossati, G., Maraschi, L., Coppi, P., Scalzo, R., Isler, J., Kaptur, A.
Publikováno v:
Astrophys.J.697:L81-L85,2009
The blazar 3C 454.3 was revealed by the Fermi Gamma-ray Space Telescope to be in an exceptionally high flux state in July 2008. Accordingly, we performed a multi-wavelength monitoring campaign on this blazar using IR and optical observations from the
Externí odkaz:
http://arxiv.org/abs/0812.4582
Autor:
Fossati, G., Buckley, J. H., Bond, I. H., Bradbury, S. M., Carter-Lewis, D. A., Chow, Y. C. K., Cui, W., Falcone, A. D., Finley, J. P., Gaidos, J. A., Grube, J., Holder, J., Horan, D., Horns, D., Jordan, M. M., Kieda, D. B., Kildea, J., Krawczynski, H., Krennrich, F., Lang, M. J., LeBohec, S., Lee, K., Moriarty, P., Ong, R. A., Petry, D., Quinn, J., Sembroski, G. H., Wakely, S. P., Weekes, T. C.
Publikováno v:
The Astrophysical Journal, 2008, 677, 906-925
(Abridged) We present a detailed analysis of week-long simultaneous observations of the blazar Mrk421 at 2-60 keV X-rays (RXTE) and TeV gamma-rays (Whipple and HEGRA) in 2001. The unprecedented quality of this dataset enables us to establish firmly t
Externí odkaz:
http://arxiv.org/abs/0710.4138
We discuss the correlation between the evolution of the TeV emission and X-ray radiation observed in high-energy peaked BL Lac objects. We describe such a correlation by a simple power law. In the first part of this work we present correlations obtai
Externí odkaz:
http://arxiv.org/abs/astro-ph/0412405
Autor:
Krawczynski, H., Hughes, S. B., Horan, D., Aharonian, F., Aller, M. F., Aller, H., Boltwood, P., Buckley, J., Coppi, P., Fossati, G., Goetting, N., Holder, J., Horns, D., Kurtanidze, O. M., Marscher, A. P., Nikolashvili, M., Remillard, R. A., Sadun, A., Schroeder, M.
Publikováno v:
Astrophys.J.601:151-164,2004
Following the detection of strong TeV gamma-ray flares from the BL Lac object 1ES 1959+650 with the Whipple 10 m Cherenkov telescope on May 16 and 17, 2002, we performed intensive Target of Opportunity (ToO) radio, optical, X-ray and TeV gamma-ray ob
Externí odkaz:
http://arxiv.org/abs/astro-ph/0310158