Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Bloom, S. D."'
The Radio to Gamma Ray Connection of EGRET Blazars: Correlation, Regression and Monte Carlo Analysis
Autor:
Bloom, S. D.
A comprehensive statistical analysis of the broadband properties of EGRET blazars is presented. This analysis includes sources identified as blazars in the Sowards-Emmerd publications. Using this sample of 122 sources, we find that there is a relatio
Externí odkaz:
http://arxiv.org/abs/0807.0431
Statistical studies indicate that the 271 point sources of high-energy gamma rays belong to two groups: a Galactic population and an isotropic extragalactic population. Many unidentified extragalactic sources are certainly blazars, and it is the inte
Externí odkaz:
http://arxiv.org/abs/astro-ph/0501193
Autor:
Bloom, S. D., Dale, D. A., Cool, R., Dupczak, K., Miller, C., Haugsjaa, A., Peters, C., Tornikoski, M., Wallace, P., Pierce, M.
We present the most recent results of an optical survey of the position error contours ("error boxes") of unidentified high energy gamma-ray sources.
Comment: 1 figure, 3 tables, to be published in Astronomical Journal
Comment: 1 figure, 3 tables, to be published in Astronomical Journal
Externí odkaz:
http://arxiv.org/abs/astro-ph/0404059
Autor:
Wallace, P. M., Bertsch, D. L., Bloom, S. D., Griffis, N. J., Hartman, R. C., Kniffen, D. A., Thompson, D. J.
The 3rd EGRET Catalog of High-energy Gamma-ray Sources contains 170 unidentified sources, and there is great interest in the nature of these sources. One means of determining source class is the study of flux variability on time scales of days; pulsa
Externí odkaz:
http://arxiv.org/abs/astro-ph/0004252
Autor:
Bloom, S. D., Marscher, A. P., Moore, E. M., Gear, W. K., Terasranta, H., Valtaoja, E., Aller, H. D., Aller, M. F.
We present multiwaveband observations of a well selected sample of 28 quasars and two radio galaxies with flat radio spectra and strong millimeter wave emission (referred to here as FSRQ's). The observations include multifrequency VLBI measurements,
Externí odkaz:
http://arxiv.org/abs/astro-ph/9812089
Autor:
Boettcher, M., Bloom, S. D.
The multiwavelength spectrum of BL Lacertae during its July 1997 outburst is analyzed in terms of different variations of the homogeneous leptonic jet model for the production of high-energy radiation from blazars. We find that a two-component gamma-
Externí odkaz:
http://arxiv.org/abs/astro-ph/9806249
We have begun to examine the EGRET database for short term variations in the fluxes of blazars and unidentified sources at high Galactic latitude. We find that several AGN show previously unreported variability. Such variations are consistent with in
Externí odkaz:
http://arxiv.org/abs/astro-ph/9709305
We have conducted a multiwavelength study of several radio sources within or near the error boxes of EGRET unidentified sources at mid to high Galactic latitude, under the hypothesis that the radio sources are blazars and are thus the best identifica
Externí odkaz:
http://arxiv.org/abs/astro-ph/9709279
Autor:
Bloom, S. D.
The latest observations of BL Lacertae with the EGRET instrument on CGRO show that the gamma-ray flux was four times higher than the previous detection. Within the 1997 July 15-22 observation there was a dramatic factor of 2.5 increase in the gamma-r
Externí odkaz:
http://arxiv.org/abs/astro-ph/9709264
We present the results of detailed nuclear shell model calculations of the spin-dependent elastic cross section for neutralinos scattering from \si29 and \ge73. The calculations were performed in large model spaces which adequately describe the confi
Externí odkaz:
http://arxiv.org/abs/hep-ph/9307228