Upper limits from hard X-ray observations of five BL Lacertae objects

Journal Article · Mon Oct 31 23:00:00 EST 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/166891· OSTI ID:6534328

Bezler, M; Gruber, D E; Rothschild, R E

Results are presented from hard X-ray observations of the five brightest X-ray BL Lacertae objects: PKS 0548-322, Mrk 421 (=1101+384), 2A 1219+305, Mrk 501 (=1652+398), and PKS 2155-304. The observations covered the energy range 15-165 keV from August 1977 to December 1978. The results are compared with previous studies. 20 references.

• Research Organization: California Univ., La Jolla (USA)
• OSTI ID: 6534328
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 334; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCRETION DISKS
BL LACERTAE OBJECTS
COMPARATIVE EVALUATIONS
COSMIC RADIO SOURCES
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
ELECTROMAGNETIC RADIATION
GALAXIES
HARD X RADIATION
IONIZING RADIATIONS
QUASARS
RADIATIONS
SEYFERT GALAXIES
X RADIATION