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- Kwak, Kyujin
- Computational Astrophysics Lab.
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Estimating Mass and Radius of a Neutron Star in Low-Mass X-ray Binary
- Author(s)
- Kwak, Kyujin, Sung, Kwang Hyun, Kim, Young-Min, Kim, Myungkuk, Lee, Chang-Hwan
- Issued Date
- 2019-04-11
- Citation
- 2019년 봄 제100차 한국천문학회 학술대회
- Abstract
- Mass and radius of a neutron star in low-mass X-ray binary (LMXB) can be estimated simultaneously when the observed light curve and spectrum show the photospheric radius expansion feature. This method has been applied to 4U 1746-37 and the mass and radius were found to be unusually small in comparison with typical neutron stars. We re-estimate the mass and radius of this target by considering that the observed light curve and spectrum can be affected by other X-ray sources because this LMXB belongs to a very crowded globular cluster NGC 6441. The new estimation increases the mass and radius but they do not reach the typical values yet.
- Publisher
- 한국천문학회
- ISSN
- 1226-2692
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