PSR J1840-1419: A VERY COOL NEUTRON STAR

被引：14
|
作者：
Keane, E. F. [1 ]
McLaughlin, M. A. [2 ]
Kramer, M. [1 ,3 ]
Stappers, B. W. [3 ]
Bassa, C. G. [3 ]
Purver, M. B. [3 ]
Weltevrede, P. [3 ]
机构：
[1] Max Planck Inst Radioastron, D-53121 Bonn, Germany
[2] W Virginia Univ, Dept Phys, Morgantown, WV 26506 USA
[3] Univ Manchester, Jodrell Bank Ctr Astrophys, Sch Phys & Astron, Manchester M13 9PL, Lancs, England
来源：
ASTROPHYSICAL JOURNAL | 2013年 / 764卷 / 02期
关键词：
pulsars: general; stars: magnetic field; X-rays: stars; ROTATING RADIO TRANSIENTS; PULSAR WIND NEBULA; X-RAY OBSERVATIONS; CHANDRA OBSERVATIONS; POWERED PULSARS; EMISSION;
D O I：
10.1088/0004-637X/764/2/180
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present upper limits on the X-ray emission for three neutron stars. For PSR J1840-1419, with a characteristic age of 16.5 Myr, we calculate a blackbody temperature upper limit (at 99% confidence) of kT(bb)(infinity) < 24(-10)(+17) eV, making this one of the coolest neutron stars known. PSRs J1814-1744 and J1847-0130 are both high magnetic field pulsars, with inferred surface dipole magnetic field strengths of 5.5 x 10(13) and 9.4 x 10(13) G, respectively. Our temperature upper limits for these stars are kT(bb)(infinity) < 123(-33)(+20) eV and kT(bb)(infinity) < 115(-33)(+16) eV, showing that these high magnetic field pulsars are not significantly hotter than those with lower magnetic fields. Finally, we put these limits into context by summarizing all temperature measurements and limits for rotation-driven neutron stars.
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页数：4
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