X-ray variability of the BL Lacertae object PKS 2155 - 304 in the 0.1-6 keV range

Abstract

view Abstract Citations (40) References (16) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS X-Ray Variability of the BL Lacertae Object PKS 2155-304 in the 0.1--6 keV Range Morini, M. ; Chiappetti, L. ; Maccagni, D. ; Maraschi, L. ; Molteni, D. ; Tanzi, E. G. ; Treves, A. ; Wolter, A. Abstract Observations of the bright BL Lac object PKS 2155 - 304 obtained at 1-6 keV using the ME argon counters and channel-multiplier array at the focus of the Exosat LE telescope, in conjunction with the 0.05-2-keV-bandpass 3000-A Lexan filter, during a total of 30 h in October-November 1983 and November 1984 are reported. The data are presented in tables and graphs and characterized. Findings discussed include an overall variation of a factor of 10, one factor-of-four increase over 4 h, and maximum luminosity variation dL/dt = 2 x 10 to the 42nd erg/s sq for H = 100 km/s Mpc (corresponding to a lower limit of mass of 10 to the 8th solar mass and a gravitational radius of 3 x 10 to the 13th cm). The implications of these results for theoretical models of the X-ray emission source are considered. Publication: The Astrophysical Journal Pub Date: July 1986 DOI: 10.1086/184708 Bibcode: 1986ApJ...306L..71M Keywords: Bl Lacertae Objects; Spaceborne Astronomy; X Ray Sources; Energy Spectra; Exosat Satellite; Light Curve; Satellite-Borne Instruments; Stellar Luminosity; Astrophysics; BL LACERTAE OBJECTS; GALAXIES: INDIVIDUAL ALPHANUMERIC: PKS 2155-304; X-RAYS: SOURCES full text sources ADS | data products SIMBAD (1) NED (1)