The High Time Resolution Universe survey - XI. Discovery of five recycled pulsars and the optical detectability of survey white dwarf companions
Date Issued
2015
Author(s)
Bates, S. D.
•
Thornton, D.
•
Bailes, M.
•
Barr, E.
•
Bassa, C. G.
•
Bhat, N. D. R.
•
•
Burke-Spolaor, S.
•
Champion, D. J.
•
Flynn, C. M. L.
•
Jameson, A.
•
Johnston, S.
•
Keith, M. J.
•
Kramer, M.
•
Levin, L.
•
Lyne, A.
•
•
Ng, C.
•
Petroff, E.
•
•
Stappers, B. W.
•
van Straten, W.
•
Description
The Parkes Observatory is part of the Australia Telescope which is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO. We thank the reviewer, Dipankar Bhattacharya, for suggestions which helped improve the manuscript.
Abstract
We present the discovery of a further five recycled pulsar systems in the mid-Galactic latitude portion of the High Time Resolution Universe survey. The pulsars have rotational periods ranging from 2 to 66 ms, and four are in binary systems with orbital periods between 10.8 h and 9 d. Three of these binary systems are particularly interesting; PSR J1227-6208 has a pulse period of 34.5 ms and the highest mass function of all pulsars with near-circular orbits. The circular orbit suggests that the companion is not another neutron star, so future timing experiments may reveal one of the heaviest white dwarfs ever found (>1.3 M☉). Timing observations of PSR J1431-4715 indicate that it is eclipsed by its companion which has a mass indicating it belongs to the redback class of eclipsing millisecond pulsars. PSR J1653-2054 has a companion with a minimum mass of only 0.08 M☉, placing it among the class of pulsars with low-mass companions. Unlike the majority of such systems, however, no evidence of eclipses is seen at 1.4 GHz.
Volume
446
Issue
4
Start page
4019
Issn Identifier
0035-8711
Ads BibCode
2015MNRAS.446.4019B
Rights
open.access
File(s)![Thumbnail Image]()
Loading...
Name
stu2350.pdf
Description
PDF editoriale
Size
540.99 KB
Format
Adobe PDF
Checksum (MD5)
9306deadc9afcea265bf8657a5d5bf6a