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The Green Bank North Celestial Cap Pulsar Survey. IV: Four New Timing Solutions | | R. J. Aloisi
; A. Cruz
; L. Daniels
; N. Meyers
; R. Roekle
; A. Schuett
; J. K. Swiggum
; M. E. DeCesar
; D. L. Kaplan
; R. S. Lynch
; K. Stovall
; Lina Levin
; A. M. Archibald
; S. Banaszak
; C. M. Biwer
; J. Boyles
; P. Chawla
; L. P. Dartez
; B. Cui
; D. F. Day
; A. J. Ford
; J. Flanigan
; E. Fonseca
; J. W. T. Hessels
; J. Hinojosa
; C. Karako-Argaman
; V. M. Kaspi
; V. I. Kondratiev
; S. Leake
; G. Lunsford
; J. G. Martinez
; A. Mata
; M. A. McLaughlin
; H. Al Noori
; S. M. Ransom
; M .S. E. Roberts
; M. D. Rohr
; X. Siemens
; R. Spiewak
; I. H. Stairs
; J. van Leeuwen
; A. N. Walker
; B. L. Wells
; | | Date: |
8 Mar 2019 | | Abstract: | We present timing solutions for four pulsars discovered in the Green Bank
Northern Celestial Cap (GBNCC) survey. All four pulsars are isolated with spin
periods between 0.26$,$s and 1.84$,$s. PSR J0038$-$2501 has a 0.26$,$s
period and a period derivative of ${7.6} imes {10}^{-19},{
m s,s}^{-1}$,
which is unusually low for isolated pulsars with similar periods. This low
period derivative may be simply an extreme value for an isolated pulsar or it
could indicate an unusual evolution path for PSR J0038$-$2501, such as a
disrupted recycled pulsar (DRP) from a binary system or an orphaned central
compact object (CCO). Correcting the observed spin-down rate for the Shklovskii
effect suggests that this pulsar may have an unusually low space velocity,
which is consistent with expectations for DRPs. There is no X-ray emission
detected from PSR J0038$-$2501 in an archival swift observation, which suggests
that it is not a young orphaned CCO. The high dispersion measure of PSR
J1949+3426 suggests a distance of 12.3$,$kpc. This distance indicates that PSR
J1949+3426 is among the most distant 7% of Galactic field pulsars, and is one
of the most luminous pulsars. | | Source: | arXiv, 1903.3543 | | Services: | Forum | Review | PDF | Favorites | |
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