The hard X-ray flux from gamma Cassiopeiae during 1970-73

Journal Article · Mon Feb 01 04:00:00 EST 1982 · Publ. Astron. Soc. Pac.; (United States)

DOI:https://doi.org/10.1086/130955· OSTI ID:6807005

Peters, G

X-ray observations are presented of the Be star Gamma Cas obtained with the Uhuru satellite between December 27, 1970, and February 15, 1973. Though variable, the X-ray source (MX 0053+60) persisted throughout the life-time of the Uhuru satellite, with an average daily flux (2-6 keV) of 4.1 counts/s or 4.0 x 10 to the 32nd ergs/s if the star is at a distance of 220 pc. Variations on time scales of months, days, and hours were observed, but a pulsation period was not found. An analysis is made of the continuous X-ray spectrum, and the X-ray flux and its behavior during the early 1970s are compared with more recent observations from the SAS-3, Copernicus, HEAO-1, and Einstein satellites.

• Research Organization: Southern California, University, Los Angeles, CA
• OSTI ID: 6807005
• Journal Information: Publ. Astron. Soc. Pac.; (United States), Journal Name: Publ. Astron. Soc. Pac.; (United States) Vol. 94; ISSN PASPA
• Country of Publication: United States
• Language: English

Related Subjects

640102 -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
DATA
ELECTROMAGNETIC RADIATION
EXPERIMENTAL DATA
INFORMATION
IONIZING RADIATIONS
NUMERICAL DATA
RADIATION FLUX
RADIATIONS
SATELLITES
STARS
VARIABLE STARS
X RADIATION