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Arecibo pulsar survey using ALFA. II. The young, highly relativistic binary pulsar J1906+0746
Lorimer, DR; Stairs, IH; Freire, PC; Cordes, JM; Camilo, F; Faulkner, AJ; Lyne, AG; Nice, DJ; Ransom, SM; Arzoumanian, Z; Manchester, RN; Champion, DJ; van Leeuwen, J; Mclaughlin, MA; Ramachandran, R; Hessels, JW; Vlemmings, W; Deshpande, AA; Bhat, ND; Chatterjee, S; Han, JL; Gaensler, BM; Kasian, L; Deneva, JS; Reid, B; Lazio, TJ; Kaspi, VM; Crawford, F; Lommen, AN; Backer, DC; Kramer, M; Stappers, BW; Hobbs, GB; Possenti, A; D'Amico, N; Burgay, M
2006-03-20
Source PublicationASTROPHYSICAL JOURNAL
Volume640Issue:1Pages:428-434
AbstractWe report the discovery of PSR J1906+0746, a young 144 ms pulsar in a highly relativistic 3.98 hr orbit with an eccentricity of 0.085 and expected gravitational wave coalescence time of similar to 300 Myr. The new pulsar was found during precursor survey observations with the Arecibo 1.4 GHz feed array system and retrospectively detected in the Parkes Multibeam plane pulsar survey data. From radio follow-up observations with Arecibo, Jodrell Bank, Green Bank, and Parkes, we have measured the spin-down and binary parameters of the pulsar and its basic spectral and polarization properties. We also present evidence for pulse profile evolution, which is likely due to geodetic precession, a relativistic effect caused by the misalignment of the pulsar spin and total angular momentum vectors. Our measurements show that PSR J1906+0746 is a young object with a characteristic age of 112 kyr. From the measured rate of orbital periastron advance (7 degrees 57 +/- 0 degrees.03 yr(-1)), we infer a total system mass of 2.61 +/- 0: 02 M-circle dot. While these parameters suggest that the PSR J1906+0746 binary system might be a younger version of the double pulsar system, intensive searches for radio pulses from the companion have so far been unsuccessful. It is therefore not known whether the companion is another neutron star or a massive white dwarf. Regardless of the nature of the companion, a simple calculation suggests that the Galactic birthrate of binaries similar to PSR J1906+ 0746 is similar to 60 Myr(-1). This implies that PSR J1906+0746 will make a significant contribution to the computed cosmic inspiral rate of compact binary systems.
KeywordPulsars : General Pulsars : Individual (Psr j1906+0746)
Indexed BySCI
Language英语
WOS IDWOS:000236143100043
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8946
Collection射电天文研究部
Affiliation1.Univ Manchester, Jodrell Bank Observ, Macclesfield SK11 9DL, Cheshire, England
2.Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada
3.Arecibo Observ, Natl Astron & Ionosphere Ctr, Arecibo, PR 00612 USA
4.Cornell Univ, Dept Astron, Ithaca, NY 14853 USA
5.Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA
6.Bryn Mawr Coll, Dept Phys, Rosemont, PA 19010 USA
7.Natl Radio Astron Observ, Charlottesville, VA USA
8.NASA, Goddard Space Flight Ctr, USRA, EUD, Greenbelt, MD 20771 USA
9.CSIRO, Australia Telescope Natl Facil, Epping, NSW 1710, Australia
10.Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA
11.McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada
12.Swinburne Univ Technol, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia
13.Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
14.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
15.Princeton Univ, Dept Phys, Princeton, NJ 08544 USA
16.USN, Res Lab, Washington, DC 20375 USA
17.Haverford Coll, Dept Phys, Haverford, PA 19041 USA
18.Franklin & Marshall Coll, Dept Phys & Astron, Lancaster, PA 17604 USA
19.Stichtung ASTRON, NL-7990 AA Dwingeloo, Netherlands
20.Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands
21.Osservatorio Astron Cagliari, Ist Nazl Astrofis, I-09012 Capoterra, Italy
Recommended Citation
GB/T 7714
Lorimer, DR,Stairs, IH,Freire, PC,et al. Arecibo pulsar survey using ALFA. II. The young, highly relativistic binary pulsar J1906+0746[J]. ASTROPHYSICAL JOURNAL,2006,640(1):428-434.
APA Lorimer, DR.,Stairs, IH.,Freire, PC.,Cordes, JM.,Camilo, F.,...&Burgay, M.(2006).Arecibo pulsar survey using ALFA. II. The young, highly relativistic binary pulsar J1906+0746.ASTROPHYSICAL JOURNAL,640(1),428-434.
MLA Lorimer, DR,et al."Arecibo pulsar survey using ALFA. II. The young, highly relativistic binary pulsar J1906+0746".ASTROPHYSICAL JOURNAL 640.1(2006):428-434.
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