RXTE and Swift: IGR J17511-3057 fading, XTE J1751-305 detected

Details RXTE and Swift: IGR J17511-3057 fading, XTE J1751-305 detected RXTE and Swift: IGR J17511-3057 fading, XTE J1751-305 detected

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atel.2237....1m&link_type=abstract

The Astronomer's Telegram, #2237

Astronomy and Astrophysics

Astronomy

8

X-Ray, Binaries, Neutron Stars, Pulsars, Transients

Scientific paper

In continuing follow-up observations of the millisecond pulsar IGR J17511-3057 (ATEL #2197), the pulsations from this source have become difficult to detect. On date 2009-10-08 UT, RXTE PCA serendipitously detected 435 Hz X-ray pulsations, identified as the nearby pulsar XTE J1751-305, which is in the same field of view. This is consistent with the recent INTEGRAL report (ATEL #2235). In a pointed RXTE PCA observation on 2009-10-09 at 04:00 UT, pulsations at 435 Hz were only weakly detected.

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