机构

• 高能物理研究所 [2]
• 国家天文台 [1]
• 新疆天文台 [1]
• 云南天文台 [1]

采集方式

• OAI收割 [5]

内容类型

• 期刊论文 [5]

发表日期

• 2020 [5]

学科主题

• 天文学 [1]
• 天文学::天体物理学 [1]
• 天文学::天体物理学... [1]
• 天文学::恒星与银河... [1]

筛选

浏览/检索结果: 共5条，第1-5条 帮助 限定条件 发表日期：2020     条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Estimating the masses of three neutron stars by twin kilohertz quasi-periodic oscillations and innermost stable circular orbits: constraining equations of state 期刊论文  OAI收割 MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 卷号: 494, 期号: 3, 页码: 4382-4392 作者:  Shi, Chang-Sheng;  Zhang, Shuang-Nan   |  收藏  |  浏览/下载：7/0  |  提交时间：2021/12/06 accretion, accretion discs  MHD  X-rays: binaries  stars: neutron  stars: magnetic field  equation of state   The force-free dipole magnetosphere in nonlinear electrodynamics 期刊论文  OAI收割 RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2020, 卷号: 20, 期号: 3, 页码: 6 作者:  Li HQ(李惠泉);  Yang XL(杨晓林);  Wang JC(王建成)   |  收藏  |  浏览/下载：66/0  |  提交时间：2020/05/18 stars  neutron  stars  magnetars  stars  magnetic field   High plasma cut-off frequency blocks the radio emission from accreting millisecond X-ray pulsar SAX J1808.4-3658 期刊论文  OAI收割 Astrophysics and Space Science, 2020, 卷号: 365, 期号: 3, 页码: 47 作者:  Wang, S. Q.;  Zhang, C. M.;  Wang, D. H.;  Wang, N.;  Wang, J. B.   |  收藏  |  浏览/下载：16/0  |  提交时间：2021/04/12 (Stars:) pulsar: individual: SAX J1808.4-3658  Stars  neutron  X-rays  stars  X-rays  binaries  X-rays: general  neutron-star  magnetic-field  optical counterpart  xmm-newton  binary  evolution  constraints  transient  sax-j1808.4-3658  oscillations  Astronomy & Astrophysics   Timing analysis of 2S 1417-624 observed with NICER and Insight-HXMT 期刊论文  OAI收割 MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 卷号: 491, 期号: 2, 页码: 1851-1856 作者:  Ji, L.;  Doroshenko, V;  Santangelo, A.;  Gungor, C.;  Zhang, S.   |  收藏  |  浏览/下载：22/0  |  提交时间：2020/10/19 stars: magnetic field  stars: neutron  X-rays: binaries  X-rays: individual: 2S 1417-624   The braking index of PSR B0540-69 and the associated pulsar wind nebula emission after spin-down rate transition 期刊论文  OAI收割 Monthly Notices of the Royal Astronomical Society, 2020, 卷号: 494, 页码: 1865-1870 作者:  HXMT   |  收藏  |  浏览/下载：40/0  |  提交时间：2022/02/08 stars: magnetic field  stars: neutron  pulsars: general  Astrophysics  - High Energy Astrophysical Phenomena  Abstract: In 2011 December, PSR B054-69 experienced a spin-down rate transition (SRT), after which the spin-down power of the pulsar increased by $\sim 36{{\ \rm per\ cent}}$. About 1000 d after the SRT, the X-ray luminosity of the associated pulsar wind nebula (PWN) was found to brighten by $32\pm 8{{\ \rm per\ cent}}$. After the SRT, the braking index n of PSR B0540-69 changes from n = 2.12 to 0.03 and then keeps this value for about five years before rising to n = 0.9 in the following years. We find that most of the current models have difficulties in explaining the measured braking index. One exceptive model of the braking index evolution is the increasing dipole magnetic field of PSR B0540-69. We suggest that the field increase may result from some instabilities within the pulsar core that enhance the poloidal component at the price of toroidal component of the magnetic field. The increasing dipole magnetic field will result in the X-ray brightening of the PWN. We fit the PWN X-ray light curve by two models: one assumes a constant magnetic field within the PWN during the brightening and the other assumes an enhanced magnetic field proportional to the energy density of the PWN. It appears that the two models fit the data well, though the later model seems to fit the data a bit better. This provides marginal observational evidence that magnetic field in the PWN is generated by the termination shock. Future high-quality and high-cadence data are required to draw a solid conclusion.