|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'501'711
Articles rated: 2609
20 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
The Green Bank Northern Celestial Cap Pulsar Survey II: The Discovery and Timing of Ten Pulsars | | A. M. Kawash
; M. A. McLaughlin
; D. L. Kaplan
; M. E. DeCesar
; L. Levin
; D. R. Lorimer
; R. S. Lynch
; K. Stovall
; J. K. Swiggum
; E. Fonseca
; A. M. Archibald
; S. Banaszak
; C. M. Biwer
; J. Boyles
; B. Cui
; L. P. Dartez
; D. Day
; S. Ernst
; A. J. Ford
; J. Flanigan
; S. A. Heatherly
; J. W. T. Hessels
; J. Hinojosa
; F. A. Jenet
; C. Karako-Argaman
; V. M. Kaspi
; V. I. Kondratiev
; S. Leake
; G. Lunsford
; J. G. Martinez
; A. Mata
; T. D. Matheny
; A. E. Mcewen
; M. G. Mingyar
; A. L. Orsini
; 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: |
9 Mar 2018 | | Abstract: | We present timing solutions for ten pulsars discovered in 350 MHz searches
with the Green Bank Telescope. Nine of these were discovered in the Green Bank
Northern Celestial Cap survey and one was discovered by students in the Pulsar
Search Collaboratory program in analysis of drift-scan data. Following
discovery and confirmation with the Green Bank Telescope, timing has yielded
phase-connected solutions with high precision measurements of rotational and
astrometric parameters. Eight of the pulsars are slow and isolated, including
PSR J0930$-$2301, a pulsar with nulling fraction lower limit of $sim$30\% and
nulling timescale of seconds to minutes. This pulsar also shows evidence of
mode changing. The remaining two pulsars have undergone recycling, accreting
material from binary companions, resulting in higher spin frequencies. PSR
J0557$-$2948 is an isolated, 44
m{ms} pulsar that has been partially recycled
and is likely a former member of a binary system which was disrupted by a
second supernova. The paucity of such so-called ’disrupted binary pulsars’
(DRPs) compared to double neutron star (DNS) binaries can be used to test
current evolutionary scenarios, especially the kicks imparted on the neutron
stars in the second supernova. There is some evidence that DRPs have larger
space velocities, which could explain their small numbers. PSR J1806+2819 is a
15
m{ms} pulsar in a 44 day orbit with a low mass white dwarf companion. We
did not detect the companion in archival optical data, indicating that it must
be older than 1200 Myr. | | Source: | arXiv, 1803.3587 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER