Results 241 to 250 of about 20,672 (255)

Blazars and INTEGRAL

Chinese Journal of Astronomy and Astrophysics, 2006
We refer to analysis of the ESA INTEGRAL satellite data for specific class of active galactic nuclei - blazars. These objects represent promising sources to be observed by INTEGRAL, especially during their active states. Suitable strategy for the future analysis is proposed and discussed.
R Hudec, F Munz, P Kubánek, E Pian
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Gamma-ray blazars

AIP Conference Proceedings, 1997
Roughly 60 blazars have been identified with >100 MeV EGRET γ-ray sources, and show inferred isotropic luminosities as large as 3×1049 ergs s−1. The two most remarkable characteristics about the EGRET observations are that the γ-ray luminosity often dominates the bolometric power, and that variability on time-scales of one day or less is seen from ...
R. C. Hartman, W. Collmar, C. von Montigny, C. D. Dermer   +3 more
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Blazar periodico

2014
Un gruppo di ricerca di astrofisica italiano ha recentemente confermato una scoperta intrigante riguardo ad uno dei più noti e studiati blazar: l’oggetto denominato PKS2155-304. Tramite osservazioni ottenute con il telescopio INAF REM ed osservazioni ad alta energia ottenute con il satellite NASA Fermi, si è determinata l’esistenza di una periodicità ...
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Observing blazars with the Whole Earth Blazar Telescope

2002
Not ...
VILLATA M, RAITERI C. M, KURTANIZDE O. M, NIKOLASHVILI M. A, IBRAHIMOV M. A, PAPADAKIS I. E, TSINGANOS K, SADAKANE N, OKADA N, TAKALO L. O, SILLANPAEAE A, TOSTI G, CIPRINI S, FRASCA A, MARILLI E, ROBB R. M, NOBLE J. C, JORSTAD S. G, HAGEN THORN V. A, LARONIOV V. M, NESCI R, MAESANO M, SCHWARTZ R. D, BASLER J, GORHAM P. W, IWAMATSU H, KATO T, PULLEN C, BENITEZ E, DE DIEGO J. A, MOILANEN M, OKSANEN A, RODRIGUEZ D, SADUN A. C, KELLY M, CARINI M. T, MILLER H. R, CATALANO S, DULTZIN HACYAN D, FAN J. H, ISHOKA R, KARTTUNEN H, KEINAENEN P, KUDRIAVTSEVA N. A, LAINELA M, LANTERI L, LARIONOVA E. G, MATSUMOTO K, MATTOX J. R, MONTAGNI F, NUCCIARELLI G, OSTORERO, Luisa, PAPAMASTORAKIS J, PASANEN M, SOBRITO G, UEMURA M.   +55 more
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Flares in Blazars

2009
Blazars are active galactic nuclei characterized by strong, nearly pure non-thermal radiations; these extend across the electromagnetic spectrum, from radio frequencies to the most energetics γ rays observed, in some cases up to TeV energies.
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Blazars

1987
Joel N. Bregman, Laura Maraschi, C. Megan Urry   +2 more
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TeV blazar

SCIENTIA SINICA Physica, Mechanica & Astronomica, 2015
JianCheng WANG, MaiChang LEI
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Blazar

2004
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blazar, n.

2023
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Blazars

2007
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