Discovery of a ~205 Hz X-ray pulsar in the globular cluster NGC 6440

Altamirano, D.; Strohmayer, T. E.; Heinke, Craig O.; Markwardt, C. B.; Swank, J. H.; Pereira, D.; Smith, E.; Wijnands, R.; Linares, M.; Patruno, A.; Casella, P.; van der Klis, M.
Bibliographical reference

The Astronomer's Telegram, #2182

Advertised on:
8
2009
Number of authors
12
IAC number of authors
0
Citations
9
Refereed citations
8
Description
Discovery of a 205 Hz X-ray pulsar in the globular cluster NGC 6440 The globular cluster NGC 6440 was observed by the PCA instrument aboard RXTE on August 30, 2009 at 01:42 (UTC). The observation lasted for approximately 3000 seconds and the source was detected with an intensity of ~7 mCrab (2-10 keV). Pulsations were detected at a barycentric frequency of 205.893 Hz, with a pulsed amplitude of approximately 7%.