BL Lacertae
Abstract
F. Makino, J. Mattox, T. Takahashi, and J. Kataoka, Insitute of Space and Astronautical Science (ISAS); and H. Kubo, Physical and Chemical Research Institute (Riken), Wako, report: "ASCA observed this source during July 18.60-19.62 UT, yielding an average x-ray flux of 2.6 x 10E-11 erg sE-1 cmE-2 (2-10 keV), which is more than four times higher than that observed in its low state with Ginga (Kawai et al. 1991, Ap.J. 382, 508). The spectrum was of power-law type with photon index of -1.44 +/- 0.01. The flux showed variation by a factor of 2 during the observation."
- Publication:
-
International Astronomical Union Circular
- Pub Date:
- July 1997
- Bibcode:
- 1997IAUC.6708....3M