Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005atel..512....1w&link_type=abstract
The Astronomer's Telegram, #512
Astronomy and Astrophysics
Astronomy
12
Radio, Infra-Red, X-Ray, Request For Observations, Binaries, Black Holes, Neutron Stars, Transients
Scientific paper
The Galactic Center region was observed in a series of 7 pointings with the Chandra X-ray Observatory on 5 June 2005 01:44-13:08 UTC. During these observations we found that the two faint X-ray transients GRS 1741.9-2853 (e.g., Muno et al. 2003, ApJ 598, 474, and references therein) and XMM J174457-2850.3 (Sakano et al. 2005, MNRAS 357, 1211) were in outburst again. GRS 1741.9-2853 is a neutron star X-ray transient and was detected during our observations at a 2-10 keV flux of approximately 1E-10 erg/s/cm^2 (assuming absorbed power-law spectral shape with a Galactic column density of 9.7E22 cm^-2 and a power-law index of 1.88; see Muno et al.
Cornelisse Remon
Fender Rob
Grindlay Jonathan
Homan Jeroen
in't Zand Johannes
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