Snapshot observations of 2S1553-542: determination of the source nature
Abstract
We propose to perform a snapshot observation of the transient source 2S1553-542, which demonstrated an outburst last three months. The current outburst is a third one only detected from this source since 1975 (the second one was in 2007). Previously the source nature was tentatively proposed as a X-ray pulsar (pulse period 9.3 sec) in the Be binary system due to the outbursts activity. But no optical counterpart was established till the moment. One of main reasons of this is a lack of knowledge of exact coordinates of the source. The proposed observations at the outburst decay stage is a unique chance to determine the source coordinates with a high precision, to perform follow-up observations in optical and infrared wavebands and establish its nature. Additionally, based on the results of spectral analysis we will determine if the source is still accreting at low level or we observe the heated neutron star.
- Publication:
-
Chandra Proposal
- Pub Date:
- September 2014
- Bibcode:
- 2014cxo..prop.4577L