SLX 1746-311 in outburst

K. C Shyama Narendranath; M. C. Ramadevi; M. Sudhakar; D. Bhattacharya; P. Sreekumar; S. Seetha

doi:10.1016/j.asr.2005.12.023

SLX 1746-311 in outburst

K. C Shyama Narendranath, M. C. Ramadevi, M. Sudhakar, D. Bhattacharya, P. Sreekumar, S. Seetha

Manipal Centre for Natural Sciences, Manipal

Research output: Contribution to journal › Article

Abstract

We report on RXTE-PCA observations of SLX 1746-311 during a ∼100 day outburst in April 2003. We present the 3-20 keV PCA energy spectra of the source and study evolution of spectral parameters. The burst spectrum is soft with T_in ∼1.3 keV at the beginning of the outburst. There is a clear evidence of a hard power law component throughout the outburst. There is also an indication of a broad iron line. The source exhibits three state transitions with considerable change in the hardness ratio at low count rates. We discuss the possible scenario under which this unusual behaviour can be explained.

Original language	English
Pages (from-to)	2788-2790
Number of pages	3
Journal	Advances in Space Research
Volume	38
Issue number	12
DOIs	https://doi.org/10.1016/j.asr.2005.12.023
Publication status	Published - 2006

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All Science Journal Classification (ASJC) codes

Aerospace Engineering
Space and Planetary Science

Cite this

Narendranath, K. C. S., Ramadevi, M. C., Sudhakar, M., Bhattacharya, D., Sreekumar, P., & Seetha, S. (2006). SLX 1746-311 in outburst. Advances in Space Research, 38(12), 2788-2790. https://doi.org/10.1016/j.asr.2005.12.023

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AU - Narendranath, K. C Shyama

AU - Ramadevi, M. C.

AU - Sudhakar, M.

AU - Bhattacharya, D.

AU - Sreekumar, P.

AU - Seetha, S.

PY - 2006

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AB - We report on RXTE-PCA observations of SLX 1746-311 during a ∼100 day outburst in April 2003. We present the 3-20 keV PCA energy spectra of the source and study evolution of spectral parameters. The burst spectrum is soft with Tin ∼1.3 keV at the beginning of the outburst. There is a clear evidence of a hard power law component throughout the outburst. There is also an indication of a broad iron line. The source exhibits three state transitions with considerable change in the hardness ratio at low count rates. We discuss the possible scenario under which this unusual behaviour can be explained.

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10.1016/j.asr.2005.12.023