GX 339-4 variability evolution observed by RXTE suggests the start of a spectral transition

Details GX 339-4 variability evolution observed by RXTE suggests the start of a spectral transition GX 339-4 variability evolution observed by RXTE suggests the start of a spectral transition

Mar 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010atel.2523....1s&link_type=abstract

The Astronomer's Telegram, #2523

Astronomy and Astrophysics

Astronomy

1

X-Ray, Request For Observations, Black Holes, Transients

Scientific paper

Since the beginning of the current outburst, the black hole transient GX 339-4 has been in a steadily brightening low-hard state (ATELs #2380 and #2384). Fourier power spectra for the last two Rossi X-ray Timing Explorer (RXTE) observations on March 26 (13:57 UT at start) and March 28 (03:02 UT at start) show quasi-periodic oscillations (QPOs) at 0.12 and 0.16 Hz, respectively, on top of broad band noise.

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