ARECIBO PULSAR SURVEY USING ALFA. III. PRECURSOR SURVEY AND POPULATION SYNTHESIS

In this paper we detail a precursor survey of this region with PALFA, which observed a subset of the full region (slightly more restrictive in l and |b| [lap] 1[degrees]) and detected 45 pulsars. Detections included 1 known millisecond pulsar and 11 previously unknown, long-period pulsars. In the su...

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Bibliographic Details
Published in:The Astrophysical journal 2014-06, Vol.787 (2), p.1-10
Main Authors: Swiggum, J K, Lorimer, D R, McLaughlin, M A, Bates, S D, Champion, D J, Ransom, S M, Lazarus, P, Brazier, A, Hessels, J W T, Nice, D J
Format: Article
Language:English
Subjects:
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
COMPARATIVE EVALUATIONS
Computer simulation
DETECTION
Estimates
GALAXIES
INTERFERENCE
Mathematical models
Millisecond pulsars
PRECURSOR
Precursors
PULSARS
RADIOWAVE RADIATION
SCINTILLATIONS
SENSITIVITY
SIMULATION
Sky surveys (astronomy)
SYNTHESIS
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Summary:In this paper we detail a precursor survey of this region with PALFA, which observed a subset of the full region (slightly more restrictive in l and |b| [lap] 1[degrees]) and detected 45 pulsars. Detections included 1 known millisecond pulsar and 11 previously unknown, long-period pulsars. In the surveyed part of the sky that overlaps with the Parkes Multibeam Pulsar Survey (36[degrees] [lap] l [lap] 50[degrees]), PALFA is probing deeper than the Parkes survey, with four discoveries in this region. For both Galactic millisecond and normal pulsar populations, we compare the survey's detections with simulations to model these populations and, in particular, to estimate the number of observable pulsars in the Galaxy. These are consistent with previous estimates. Identical estimation techniques predict that 490 super(+160) sub(-115), normal pulsars and 12 super(+70) sub(-5) millisecond pulsars would be detected by the beginning of 2014; at the time, the PALFA survey had detected 283 normal pulsars and 31 millisecond pulsars, respectively.
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/787/2/137