New X-ray transient outburst in Terzan 5

Details New X-ray transient outburst in Terzan 5 New X-ray transient outburst in Terzan 5

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011atel.3714....1a&link_type=abstract

The Astronomer's Telegram, #3714

Astronomy and Astrophysics

Astronomy

2

X-Ray, Request For Observations, Globular Cluster, Transient

Scientific paper

We have been monitoring the globular cluster Terzan 5 with weekly RXTE observations. Our observation from 4:57 to 5:28 UT on Oct. 26, 2011 found an RXTE PCA intensity of 0.008(2) Crab, vs. typical quiescent intensity of 0.002(1) Crab (2-16 keV). No indications of pulsations are visible yet, but the countrate is only 43 cts/s/PCU including background. Swift/BAT daily-averaged flux measurements (http://swift.gsfc.nasa.gov/docs/swift/results/transients/weak/EXO1745-248/ ) confirm the flux increase, reaching 0.0058(8) cts/cm^2/s (15-50 keV), vs.

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