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首页> 外文期刊>The Astrophysical Journal. Letters >Different Accretion Heating of the Neutron Star Crust during Multiple Outbursts in MAXI J0556-332
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Different Accretion Heating of the Neutron Star Crust during Multiple Outbursts in MAXI J0556-332

机译：在MAXI J0556-332中的多次爆发期间中子星外壳的不同凸起加热

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摘要

The transient neutron star (NS) low-mass X-ray binary MAXI J0556-332 provides a rare opportunity to study NS crust heating and subsequent cooling for multiple outbursts of the same source. We examine MAXI, Swift, Chandra, and XMM-Newton data of MAXI J0556-332 obtained during and after three accretion outbursts of different durations and brightnesses. We report on new data obtained after outburst III. The source has been tracked up to ～1800 days after the end of outburst I. Outburst I heated the crust strongly, but no significant reheating was observed during outburst II. Cooling from ～333 eV to ～146 eV was observed during the first ～1200 days. Outburst III reheated the crust up to ～167 eV, after which the crust cooled again to ～131 eV in ～350 days. We model the thermal evolution of the crust and find that this source required a different strength and depth of shallow heating during each of the three outbursts. The shallow heating released during outburst I was ～17 MeV nucleon~(-1) and outburst III required ～0.3 MeV nucleon~(-1). These cooling observations could not be explained without shallow heating. The shallow heating for outburst II was not well constrained and could vary from ～0 to 2.2 MeV nucleon~(-1), i.e., this outburst could in principle be explained without invoking shallow heating. We discuss the nature of the shallow heating and why it may occur at different strengths and depths during different outbursts.
机译：瞬态中子星（NS）低质量X射线二元MAXI J0556-332提供了一种难以研究NS CRUST加热和随后冷却同一来源的多次爆发的机会。我们检查了在不同持续时间和亮度的三个累积爆发后和之后获得的Maxi J0556-332的Maxi，Swift，Chandra和XMM-Newton数据。我们报告突发三世后获得的新数据。源头在爆发结束后追踪〜1800天。爆发强烈加热地壳，但在爆发II期间没有观察到明显的再加热。在第一个〜1200天内观察到从〜333eV的冷却到〜146eV。爆发III将外壳重新加热到〜167 ev，之后将地壳再次冷却至〜131eV〜350天。我们模拟了地壳的热量演变，发现这一源在三个爆发中的每一个中需要不同的强度和深度浅的加热。在爆发后释放的浅供暖是〜17 mev Nucleon〜（-1）和突出III所需〜0.3mev Nucleon〜（-1）。在不浅的加热的情况下无法解释这些冷却观察。突出II的浅层加热并不受到很大的限制，可以从〜0到2.2 meV Nucleon〜（-1），即，这是原则上可能在不调用浅层加热的情况下解释。我们讨论了浅层加热的性质，为什么在不同爆发期间可能发生不同的优点和深度。

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    Aastha S. Parikh; Jeroen Homan; Rudy Wijnands; Laura Ootes; Dany Page; Diego Altamirano; Nathalie Degenaar; Edward F. Brown; Edward Cackett; Andrew Cumming; Alex Deibel; Joel K. Fridriksson; Dacheng Lin; Manuel Linares; Jon M. Miller;

  • 作者单位

    Anton Pannekoek Institute for Astronomy University of Amsterdam Postbus 94249 NL-1090 GE Amsterdam The Netherlands;

    SRON Netherlands Institute for Space Research Sorbonnelaan 2 NL-3584 CA Utrecht The Netherlands;

    Anton Pannekoek Institute for Astronomy University of Amsterdam Postbus 94249 NL-1090 GE Amsterdam The Netherlands;

    Anton Pannekoek Institute for Astronomy University of Amsterdam Postbus 94249 NL-1090 GE Amsterdam The Netherlands;

    Instituto de Astronomía Universidad Nacional Autónoma de México Mexico D.F. 04510 Mexico;

    Department of Physics and Astronomy Southampton University Southampton SO17 1BJ UK;

    Anton Pannekoek Institute for Astronomy University of Amsterdam Postbus 94249 NL-1090 GE Amsterdam The Netherlands;

    Department of Physics and Astronomy Michigan State University 567 Wilson Road East Lansing MI 48864 USA;

    Department of Physics &

    Astronomy Wayne State University 666 W. Hancock Street Detroit MI 48201 USA;

    Department of Physics and McGill Space Institute McGill University 3600 Rue University Montreal QC H3A 2T8 Canada;

    Astronomy Department Indiana University Bloomington IN 47405 USA;

    Anton Pannekoek Institute for Astronomy University of Amsterdam Postbus 94249 NL-1090 GE Amsterdam The Netherlands;

    Space Science Center University of New Hampshire Durham NH 03824 USA;

    Departament de Física EEBE Universitat Politècnica de Catalunya c/ Eduard Maristany 10 E-08019 Barcelona Spain;

    Department of Astronomy University of Michigan 500 Church Street Ann Arbor MI 48109 USA;

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  • 正文语种 eng
  • 中图分类 天体力学（理论天文学）;
  • 关键词

    accretion; accretion disks; stars: neutron; X-rays: binaries; X-rays: individual (MAXI J0556-332);

    机译：accretion;Accretion磁盘;星星：中子;X射线：二进制文件;X射线：个人（MAXI J0556-332）;

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