4U 1820-303 is entering a low/hard X-ray state

Details 4U 1820-303 is entering a low/hard X-ray state 4U 1820-303 is entering a low/hard X-ray state

Apr 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010atel.2533....1k&link_type=abstract

The Astronomer's Telegram, #2533

Astronomy and Astrophysics

Astronomy

1

X-Ray, Request For Observations, Binaries, Globular Clusters, Neutron Stars, Variables

Scientific paper

All sky measurements taken by the RXTE/ASM, MAXI/GSC and Swift/BAT, as well as pointed observations by the RXTE/PCA as part of the Galactic bulge scans, show that the ultra-compact low-mass X-ray binary 4U 1820-303 is entering a low/hard state again. The last low/hard state was seen in April-June 2009 and lasted for about 2 months (ATels #2071, #2167). In soft X-rays (<12 keV) the source is declining steadily in flux over the last days to weeks; it reached about 100-125 mCrab on UT 2010 April 4, approaching the lowest values seen over the last decades.

Affiliated with

Also associated with

No associations

Rating

4U 1820-303 is entering a low/hard X-ray state does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with 4U 1820-303 is entering a low/hard X-ray state, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 4U 1820-303 is entering a low/hard X-ray state will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1310929