[ Previous | Next | ADS ]

Optical detection of a new accretion outburst in Aql X-1

ATel #6280; A. Meshcheryakov (IKI, Moscow, Russia), I. Khamitov (TUG, Antalya, Turkey), I. Bikmaev, E. Irtuganov, N. Sakhibullin (KFU/AST, Kazan, Russia), R. Burenin (IKI, Moscow, Russia), M. Eselevich (ISTP, Irkutsk, Russia), V. Vlasyuk (SAO, Nizhnij Arkhyz, Russia)
on 30 Jun 2014; 03:56 UT
Distributed as an Instant Email Notice Transients
Credential Certification: Alexander Meshcheryakov (mesch@iki.rssi.ru)

Subjects: Radio, Infra-Red, Optical, Ultra-Violet, X-ray, Neutron Star, Transient

Referred to by ATel #: 6286, 6447, 7088

During optical monitoring campaign of Soft X-ray Transient (SXT) Aql X-1 performed at 1.5-m Russian-Turkish telescope (TUBITAK National Observatory, Antalya, Turkey) 28-29 June 2014 (56836.96 - 56838.05 MJD) we detected a continuous brightening of the Aql X-1 optical counterpart in g, r, i, z and Rc bands at a rate ~0.2mag/day, reaching 29 June 2014 flux ~0.6 magnitude brighter than the source quiescence level. Optical light curves from RTT150 telescope can be found at http://hea.iki.rssi.ru/~mesch/aqlx-1/flare2014.jpg . It is highly possible that the detected brightening of Aql X-1 optical counterpart is a precursor of the expected X-ray outburst in the system, which will possibly start in a few days. Multiwavelength observations of Aql X-1 during accretion outburst in X-ray,UV,Optical,IR and Radio bands are highly encouraged.