The following document lists the file abstract/CWINKLER_CNTGRSB.abs
from catalogue VI/111.
A plain copy of the file
(without headers/trailers) may be downloaded.
The astrophysical nature of the hard x-ray source GRS 1915+105 is unknown. Recent observations in the radio and near infrared wavelengths have led to the identification of a counterpart at those energies. It is likely that GRS 1915+105 may also be identical with the soft gamma-ray repeater SGR 1900+14 showing recent activities. In addition, CO measurements indicate the presence of two molecular clouds, one of which being a good candidate for a possible association with the GRS 1915+105. The source shows strong variability (partially correlated) in radio, near IR and hard x-rays including strong outbursts. This observational evidence could be explained by a scenario in which a possible black hole is fed by accretion from giant molecular clouds and the observed variability and bursts might be due to thermal instabilities during accretion. In case GRS1915+105 will undergo a new outburst at other wavelengths (including new soft gamma-ray repeating events (as reported e.g. from the BATSE experiment onboard GRO)) immediate follow-up observations in the IR shall be conducted in form of a ToO observation. The investigations of the IR quiescent counterpart are subject of a second independent proposal.