Upper limits for the flux of very high-energy gamma radiation from Cygnus X-3 and for the explosion rate of primordial black holes obtained by the Haleakala Gamma Ray Observatory
Abstract
Two possible sources of gamma radiation are considered: the X-ray (binary?) source, Cygnus X-3, and primordial black holes. In the case of Cygnus X-3, high multiplicity events are selected and an upper limit for the flux of very high energy gamma radiation from this source is obtained. An unsuccessful attempt to verify an earlier observation by the author of modulation of the cosmic ray rate at a period near Cygnus X-3's 4.8 hour X-ray period is discussed. In the search for gamma radiation from primordial black holes, two models of their decay are considered: the quark model and the Hagedorn model. No primordial black hole explosions were detected and upper limits for the explosion rate are presented.
Degree
Ph.D.
Advisors
Gaidos, Purdue University.
Subject Area
Astronomy|Astrophysics
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