Rapid evolution of variability properties in XTE J1817-330

Details Rapid evolution of variability properties in XTE J1817-330 Rapid evolution of variability properties in XTE J1817-330

Feb 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006atel..752....1h&link_type=abstract

The Astronomer's Telegram, #752

Astronomy and Astrophysics

Astronomy

2

X-Ray, Binaries, Black Holes, Transients

Scientific paper

We observed the black hole candidate X-ray transient XTE J1817-330 five times with RXTE on February 24, between 06:03 UTC and 17:04 UTC. The unabsorbed 4-25 keV fluxes were close to 6.2e-10 ergs/cm^2/s in all five observations, only slightly higher than in our observation of February 13 (ATel #743). However, the 10-25 keV fluxes were more than 2-2.5 times higher in our latest observations, confirming the recent spectral hardening reported in ATel #738.

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