Quiescent Light Curve of Accreting Neutron Star MAXI J0556-332

作者：Liu, Helei^*; Matsuo, Yasuhide; Hashimoto, Masa-aki; Noda, Tsuneo; Fujimoto, Masayuki Y.

来源：Journal of the Physical Society of Japan, 2017, 86(12): 123901.

DOI：10.7566/JPSJ.86.123901

• EQUATION-OF-STATE
• THERMAL EVOLUTION
• R-MODES
• EMISSIVITIES
• CONSTRAINTS
• RADIATION
• HOT

MAXI J0556-332 is the hottest transient accreting neutron star at the beginning of its quiescence. A theoretical model with crustal heating indicates that an additional shallow heat source of Q(shallow) > 6 MeV per accreted nucleon is required in the shallow outer crust with respect to the deeper star crust by considering the observed decline in accretion rate at the end of outburst. However, the physical source of this shallow heating is still unclear. In the present investigation, we performed stellar evolutionary calculations, adopting the effects of outburst behavior of the accretion rate. As a consequence, we find that the quiescent light curve of MAXI J0556-332 can be well explained by the nuclear energy generation due to the hot CNO cycle.

• 出版日期2017-12-15
• 单位新疆大学