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Optical and hard X-ray detections of an outburst from Aquila X-1

Bibcode
2009ATel.1970....1R
Russell, D. M.; Lewis, F.
Bibliographical reference

The Astronomer's Telegram, #1970

Advertised on:
3
2009
Number of authors
2
IAC number of authors
0
Citations
6
Refereed citations
2
Description
We report a new outburst from the neutron star X-ray transient Aquila X-1. Optical monitoring with the Faulkes Telescopes North and South show a rise above quiescence by 0.4 mag in V and i' on 2009-03-07. The magnitudes on that date (MJD 54897.76) were V=18.82 +- 0.09; i'=17.32 +- 0.12. Three days before, on 2009-03-04 (MJD 54894.65) we had V=19.31 +- 0.15; i'=17.73 +- 0.18, which are consistent with the quiescent magnitudes of V=19.21 +- 0.10; i'=17.74 +- 0.07 (ATel #1218).
Type
Non-refereed
Neutron stars

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