What Powered the Kilonova-like Emission after GRB 230307A in the Framework of a Neutron Star-White Dwarf Merger?

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成果类型：

期刊论文

作者：

Wang, Xiangyu Ivy;Yu, Yun-Wei;Ren, Jia;Yang, Jun;Zou, Ze-Cheng;...

通讯作者：

Yu, YW

作者机构：

[Ren, Jia; Yang, Jun; Wang, Xiangyu Ivy; Zou, Ze-Cheng] Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Peoples R China.

[Yu, Yun-Wei; Yu, YW] Cent China Normal Univ, Inst Astrophys, Wuhan 430079, Peoples R China.

[Yu, Yun-Wei; Yu, YW] Cent China Normal Univ, Key Lab Quark & Lepton Phys, Minist Educ, Wuhan 430079, Peoples R China.

[Zhu, Jin-Ping] Monash Univ, Sch Phys & Astron, Clayton, Vic 3800, Australia.

[Zhu, Jin-Ping] OzGrav, ARC Ctr Excellence Gravitat Wave Discovery, Clayton, Vic 3800, Australia.

通讯机构：

[Yu, YW ] C

Cent China Normal Univ, Inst Astrophys, Wuhan 430079, Peoples R China.

Cent China Normal Univ, Key Lab Quark & Lepton Phys, Minist Educ, Wuhan 430079, Peoples R China.

语种：

英文

期刊：

ASTROPHYSICAL JOURNAL LETTERS

ISSN：

2041-8205

年：

2024

卷：

964

期：

页码：

DOI：

10.3847/2041-8213/ad2df6

基金类别：

MOST divided by National Key Research and Development Program of China (NKPs)https://doi.org/10.13039/501100012166 [2021YFA0718500, 2022YFF0711404]; National Key Research and Development Programs of China [2020SKA0120300, 2022SKA0130100, 2022SKA0130102]; National SKA Program of China [CMS-CSST-2021-A12, CMS-CSST-2021-B11]; China Manned Space Project; School of Astronomy and Space Science at Nanjing University

机构署名：

本校为通讯机构

院系归属：

物理科学与技术学院

摘要：

The second brightest gamma-ray burst, GRB 230307A (with a duration T 90 similar to 40 s), exhibited characteristics indicative of a magnetar engine during the prompt emission phase. Notably, a suspected kilonova was identified in its follow-up optical and infrared observations. Here we propose that the origin of GRB 230307A is a neutron star-white dwarf (NS-WD) merger as this could naturally explain the long duration and the large physical offset from the center of its host galaxy. In the framework of such an NS-WD merger event, the late-time kilonova-like emission is very likely to be powered...

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What Powered the Kilonova-like Emission after GRB 230307A in the Framework of a Neutron Star-White Dwarf Merger?

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