Precise mass measurements for the double neutron star system J1829+2456

Haniewicz, Henryk, Ferdman, Robert ORCID:, Freire, P. C. C., Champion, D. J., Bunting, K. A., Lorimer, D. R. and McLaughlin, M. A. (2021) Precise mass measurements for the double neutron star system J1829+2456. Monthly Notices of the Royal Astronomical Society, 500 (4). pp. 4620-4627. ISSN 0035-8711

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PSR J1829+2456 is a radio pulsar in a relativistic binary system with another neutron star. It has a rotational period of 41 ms and a mildly eccentric (e = 0.14) 28 h orbit. We have continued its observations with the Arecibo radio telescope and have now measured the individual neutron star masses of this system: The pulsar and companion masses are 1.306 ± 0.007 M⊙ and 1.299 ± 0.007 M⊙ (2σ - 95 percent confidence, unless stated otherwise), respectively. We have also measured the proper motion for this system and used it to estimate a space velocity of 49+77-30 kms-1 with respect to the local standard of rest. The relatively low values for companion mass, space velocity, and orbital eccentricity in this system make it similar to other double neutron star systems in which the second-formed neutron star is thought to have formed in a low-kick, low mass-loss, symmetric supernova.

Item Type: Article
Uncontrolled Keywords: binaries: general,methods: observational,pulsars: general,astronomy and astrophysics,space and planetary science ,/dk/atira/pure/subjectarea/asjc/3100/3103
Faculty \ School: Faculty of Science > School of Chemistry
Faculty of Science > School of Physics
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Depositing User: LivePure Connector
Date Deposited: 21 Apr 2021 23:48
Last Modified: 23 Oct 2022 02:17
DOI: 10.1093/mnras/staa3466

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