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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
PARKES RADIO SEARCHES of FERMI GAMMA-RAY SOURCES and MILLISECOND PULSAR DISCOVERIES
Astrophysical Journal, Volume 810, No. 2, Article 85, Year 2015
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Description
In a search with the Parkes radio telescope of 56 unidentified Fermi-Large Area Telescope (LAT) gamma-ray sources, we have detected 11 millisecond pulsars (MSPs), 10 of them discoveries, of which five were reported by Kerr et al. We did not detect radio pulsations from six other pulsars now known in these sources. We describe the completed survey, which included multiple observations of many targets conducted to minimize the impact of interstellar scintillation, acceleration effects in binary systems, and eclipses. We consider that 23 of the 39 remaining sources may still be viable pulsar candidates. We present timing solutions and polarimetry for five of the MSPs and gamma-ray pulsations for PSR J1903-7051 (pulsations for five others were reported in the second Fermi-LAT catalog of gamma-ray pulsars). Two of the new MSPs are isolated and five are in > 1 day circular orbits with 0.2-0.3 M⊙ presumed white dwarf companions. PSR J0955-6150, in a 24 day orbit with a ≈0.25 M⊙ companion but eccentricity of 0.11, belongs to a recently identified class of eccentric MSPs. PSR J1036-8317 is in an 8 hr binary with >0.14 M⊙ a companion that is probably a white dwarf. PSR J1946-5403 is in a 3 hr orbit with a >0.02 M⊙ companion with no evidence of radio eclipses. © 2015. The American Astronomical Society. All rights reserved.
Authors & Co-Authors
Camilo, Fernando
United States, New York
Columbia University
Kerr, Matthew T.
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Ray, Paul S.
United States, Washington, D.c.
U.s. Naval Research Laboratory
Ransom, Scott M.
United States, Charlottesville
National Radio Astronomy Observatory
Sarkissian, John Mihran
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Cromartie, H. Thankful
United States, Charlottesville
University of Virginia
Johnston, Simon
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Reynolds, John E.
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Wolff, Michael Th
United States, Washington, D.c.
U.s. Naval Research Laboratory
Freire, Paulo C.C.
Germany, Bonn
Max Planck Institute for Radio Astronomy
Bhattacharyya, Bhaswati
United Kingdom, Manchester
The University of Manchester
Ferrara, Elizabeth C.
United States, Greenbelt
Nasa Goddard Space Flight Center
Keith, Michael J.
United Kingdom, Manchester
The University of Manchester
Michelson, Peter F.
United States, Palo Alto
Stanford University
Saz-Parkinson, Pablo M.
United States, Santa Cruz
University of California, Santa Cruz
Hong Kong, Hong Kong
The University of Hong Kong
Wood, Kent S.
United States, Washington, D.c.
U.s. Naval Research Laboratory
Statistics
Citations: 77
Authors: 16
Affiliations: 11
Identifiers
Doi:
10.1088/0004-637X/810/2/85
ISSN:
0004637X
Study Design
Cross Sectional Study
Study Approach
Quantitative