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
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Credential Certification: Alexander Meshcheryakov (firstname.lastname@example.org)
Subjects: Radio, Infra-Red, Optical, Ultra-Violet, X-ray, Neutron Star, Transient
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.