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

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

Mar 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atel.1970....1r&link_type=abstract

The Astronomer's Telegram, #1970

Astronomy and Astrophysics

Astronomy

4

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

Scientific paper

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).

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