Outburst, identification, and X-ray light curve of GS 1354 - 64 (= MX 1353 - 64?, Centaurus X-2?)
Creators
- 1. Center for High-Energy Astrophysics (Netherlands)
- 2. Amsterdam Universiteit (Netherlands)
- 3. Haute-Provence, Observatoire, Saint-Michel-l'Observatoire (France)
- 4. Universitetets Astronomiske Observatorium, Copenhagen (Denmark)
- 5. Osaka Univ., Toyonaka (Japan)
Description
This paper describes the optical identification and the X-ray light curve of an ultrashort transient X-ray source, GS 1354 - 64, discovered on February 13, 1987 by the All Sky Monitor (ASM) on onboard Ginga satellite. The data obtained by ASM are supplemented by data from the ESO 1-m Schmidt and the 1.54-m Danish telescopes, showing that the X-ray spectrum of the GS 1354 - 64 consists of two components: a disk blackbody spectrum with a temperature of 0.7 keV and a power-law component with a photon index of 2.1, which is one of the characteristics of the black hole candidates. It is shown that, although the position of the GS 1354 - 64 source is consistent with the positions of two X-ray outbursts, MX 1353 - 64 and Cen X-2, the characteristics of GS 1354 - 64 are markedly different from either of these sources. 43 refs
Additional details
Publishing Information
- Journal Title
- Astrophysical Journal
- Journal Volume
- 361
- Series
- Astrophys. J.
- Journal Page Range
- 590-595
- ISSN
- 0004-637X
- CODEN
- ASJOA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 22020938
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- BINARY STARS; BLACK HOLES; BRIGHTNESS; CHARGE-COUPLED DEVICES; COSMIC X-RAY SOURCES; IDENTIFICATION SYSTEMS; NOVAE; X RADIATION; X-RAY SPECTRA
- Descriptors DEC
- COSMIC RAY SOURCES; ELECTROMAGNETIC RADIATION; ERUPTIVE VARIABLE STARS; IONIZING RADIATIONS; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; RADIATIONS; SEMICONDUCTOR DEVICES; SPECTRA; STARS; VARIABLE STARS