THE EINSTEIN@HOME SEARCH FOR RADIO PULSARS AND PSR J2007+2722 DISCOVERY

被引：47

作者：

Allen, B. ^{[1
,2
,3
]}

Knispel, B. ^{[1
,2
]}

Cordes, J. M. ^{[4
]}

Deneva, J. S. ^{[5
]}

Hessels, J. W. T. ^{[6
,7
]}

Anderson, D. ^{[8
]}

Aulbert, C. ^{[1
,2
]}

Bock, O. ^{[1
,2
]}

Brazier, A. ^{[4
,9
]}

Chatterjee, S. ^{[4
]}

Demorest, P. B. ^{[10
]}

Eggenstein, H. B. ^{[1
,2
]}

Fehrmann, H. ^{[1
,2
]}

Gotthelf, E. V. ^{[11
]}

Hammer, D. ^{[3
]}

Kaspi, V. M. ^{[12
]}

Kramer, M. ^{[13
]}

Lyne, A. G. ^{[14
]}

Machenschalk, B. ^{[1
,2
]}

McLaughlin, M. A. ^{[15
]}

Messenger, C. ^{[1
,2
]}

Pletsch, H. J. ^{[1
,2
]}

Ransom, S. M. ^{[10
]}

Stairs, I. H. ^{[16
]}

Stappers, B. W. ^{[14
]}

Bhat, N. D. R. ^{[17
,18
]}

Bogdanov, S. ^{[11
]}

Camilo, F. ^{[5
,11
]}

Champion, D. J. ^{[13
]}

Crawford, F. ^{[19
]}

Desvignes, G. ^{[20
,21
]}

Freire, P. C. C. ^{[13
]}

Heald, G. ^{[6
]}

Jenet, F. A. ^{[22
]}

Lazarus, P. ^{[13
]}

Lee, K. J. ^{[13
]}

van Leeuwen, J. ^{[6
,7
]}

Lynch, R. ^{[12
]}

Papa, M. A. ^{[1
,2
,3
]}

Prix, R. ^{[1
,2
]}

Rosen, R. ^{[23
]}

Scholz, P. ^{[12
]}

Siemens, X. ^{[3
]}

Stovall, K. ^{[22
]}

Venkataraman, A. ^{[5
]}

Zhu, W. ^{[16
]}

机构：

[1] Max Planck Inst Gravitat Phys, D-30167 Hannover, Germany

[2] Leibniz Univ Hannover, D-30167 Hannover, Germany

[3] Univ Wisconsin, Dept Phys, Milwaukee, WI 53211 USA

[4] Cornell Univ, Dept Astron, Ithaca, NY 14853 USA

[5] Arecibo Observ, Arecibo, PR 00612 USA

[6] Netherlands Inst Radio Astron, ASTRON, NL-7990 AA Dwingeloo, Netherlands

[7] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 XH Amsterdam, Netherlands

[8] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[9] Cornell Univ, NAIC, Ithaca, NY 14853 USA

[10] NRAO Natl Radio Astron Observ, Charlottesville, VA 22903 USA

[11] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA

[12] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

[13] Max Planck Inst Radioastron, D-53121 Bonn, Germany

[14] Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England

[15] W Virginia Univ, Dept Phys, Morgantown, WV 26506 USA

[16] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

[17] Swinburne Univ Technol, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia

[18] Curtin Univ, Int Ctr Radio Astron Res, Bentley, WA 6102, Australia

[19] Franklin & Marshall Coll, Dept Phys & Astron, Lancaster, PA 17604 USA

[20] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

[21] Univ Calif Berkeley, Radio Astron Lab, Berkeley, CA 94720 USA

[22] Univ Texas Brownsville, Ctr Gravitat Wave Astron, Brownsville, TX 78520 USA

[23] NRAO, Green Bank, WV 24944 USA

来源：

ASTROPHYSICAL JOURNAL | 2013年 / 773卷 / 02期

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

binaries: close; gravitational waves; methods: data analysis; pulsars: general; pulsars: individual (PSR J2007+2722); surveys; LARGE-AREA TELESCOPE; GEODETIC SPIN PRECESSION; NEUTRON-STAR; X-RAY; CONSTRAINING POPULATION; MILLISECOND PULSARS; SYNTHESIS MODELS; TIMING PACKAGE; EMISSION BEAM; BINARY;

D O I：

10.1088/0004-637X/773/2/91

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Einstein@Home aggregates the computer power of hundreds of thousands of volunteers from 193 countries, to search for new neutron stars using data from electromagnetic and gravitational-wave detectors. This paper presents a detailed description of the search for new radio pulsars using Pulsar ALFA survey data from the Arecibo Observatory. The enormous computing power allows this search to cover a new region of parameter space; it can detect pulsars in binary systems with orbital periods as short as 11 minutes. We also describe the first Einstein@Home discovery, the 40.8 Hz isolated pulsar PSR J2007+2722, and provide a full timing model. PSR J2007+2722's pulse profile is remarkably wide with emission over almost the entire spin period. This neutron star is most likely a disrupted recycled pulsar, about as old as its characteristic spin-down age of 404 Myr. However, there is a small chance that it was born recently, with a low magnetic field. If so, upper limits on the X-ray flux suggest but cannot prove that PSR J2007+2722 is at least similar to 100 kyr old. In the future, we expect that the massive computing power provided by volunteers should enable many additional radio pulsar discoveries.

引用

页数：32

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