دورية أكاديمية
ARECIBO PULSAR SURVEY USING ALFA. III. PRECURSOR SURVEY AND POPULATION SYNTHESIS
| العنوان: | ARECIBO PULSAR SURVEY USING ALFA. III. PRECURSOR SURVEY AND POPULATION SYNTHESIS |
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| المؤلفون: | 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., Ellis, J., Senty, T. R., Allen, B., Bhat, N. D. R., Bogdanov, S., Camilo, F., Chatterjee, S., Cordes, J. M., Crawford, F., Deneva, J. S., Freire, P. C. C., Jenet, F. A., Karako-Argaman, C., Kaspi, V. M., Knispel, B., Lee, K. J., van Leeuwen, J., Lynch, R., Lyne, A. G., Scholz, P., Siemens, X., Stairs, I. H., Stappers, B. W., Stovall, K., Venkataraman, A., Zhu, W. W. |
| المساهمون: | Swiggum, JK (reprint author), W Virginia Univ, Dept Phys & Astron, Morgantown, WV 26506 USA., W Virginia Univ, Dept Phys & Astron, Morgantown, WV 26506 USA., Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England., Max Planck Inst Radioastron, D-53121 Bonn, Germany., NRAO, Charlottesville, VA 22903 USA., Cornell Univ, Dept Astron, Ithaca, NY 14853 USA., Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 XH Amsterdam, Netherlands., Dept Phys, Lafayette Coll, Easton, PA 18042 USA., Univ Wisconsin, Dept Phys, Milwaukee, WI 53211 USA., Leibniz Univ Hannover, Dept Phys, D-30167 Hannover, Germany., Max Planck Inst Gravitat Phys, D-30167 Hannover, Germany., Swinburne Univ, Ctr Astrophys & Supercomputing, Hawthorn, Vic 3122, Australia., Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA., Arecibo Observ, Arecibo, PR 00612 USA., Franklin & Marshall Coll, Dept Phys & Astron, Lancaster, PA 17604 USA., Univ Texas Brownsville, Ctr Gravitat Wave Astron, Brownsville, TX 78520 USA., McGill Univ, Dept Phys, Montreal, PQ, Canada., Peking Univ, Kavli Inst Radio Astron, Beijing 100871, Peoples R China., Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada., Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA. |
| المصدر: | SCI |
| بيانات النشر: | astrophysical journal |
| سنة النشر: | 2014 |
| المجموعة: | Peking University Institutional Repository (PKU IR) / 北京大学机构知识库 |
| مصطلحات موضوعية: | methods: statistical, pulsars: general, surveys, 5 MILLISECOND PULSARS, RADIO PULSARS, DISCOVERY, BINARY, SEARCH, ALPHA, YOUNG |
| الوصف: | The Pulsar Arecibo L-band Feed Array (PALFA) Survey uses the ALFA 7-beam receiver to search both inner and outer Galactic sectors visible from Arecibo (32 degrees less than or similar to l less than or similar to 77 degrees and 168 degrees less than or similar to l less than or similar to 214 degrees) close to the Galactic plane (vertical bar b vertical bar less than or similar to 5 degrees) for pulsars. The PALFA survey is sensitive to sources fainter and more distant than have previously been seen because of Arecibo's unrivaled sensitivity. 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 vertical bar b vertical bar less than or similar to 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 less than or similar to l less than or similar to 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. We place 95% confidence intervals of 82,000 to 143,000 on the number of detectable normal pulsars and 9000 to 100,000 on the number of detectable millisecond pulsars in the Galactic disk. These are consistent with previous estimates. Given the most likely population size in each case (107,000 and 15,000 for normal and millisecond pulsars, respectively), we extend survey detection simulations to predict that, when complete, the full PALFA survey should have detected 1000(-230)(+330) normal pulsars and 30(-20)(+200) millisecond pulsars. Identical estimation techniques predict that 490(-115)(+160) normal pulsars and 12(-5)(+70) millisecond pulsars would be detected by the beginning of 2014; at ... |
| نوع الوثيقة: | journal/newspaper |
| اللغة: | English |
| تدمد: | 0004-637X 1538-4357 |
| العلاقة: | ASTROPHYSICAL JOURNAL.2014,787,(2).; 779103; http://hdl.handle.net/20.500.11897/213228Test; WOS:000336246700042 |
| DOI: | 10.1088/0004-637X/787/2/137 |
| الإتاحة: | https://doi.org/20.500.11897/213228Test https://doi.org/10.1088/0004-637X/787/2/137Test https://hdl.handle.net/20.500.11897/213228Test |
| رقم الانضمام: | edsbas.2A941B76 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 0004637X 15384357 |
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| DOI: | 10.1088/0004-637X/787/2/137 |