Sign on
ADS Classic will be deprecated in May 2019 and retired in October 2019. Please redirect your searches to the new ADS modern form or the classic form. More info can be found on our blog.

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· arXiv e-print (arXiv:1711.08933)
· References in the article
· Citations to the Article (5) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
A Census of Southern Pulsars at 185 MHz
Authors:
Xue, Mengyao; Bhat, N. D. R.; Tremblay, S. E.; Ord, S. M.; Sobey, C.; Swainston, N. A.; Kaplan, D. L.; Johnston, Simon; Meyers, B. W.; McSweeney, S. J.
Affiliation:
AA(International Centre for Radio Astronomy Research (ICRAR), Curtin University, Bentley, WA 6102, Australia; ARC Centre of Excellence for All-sky Astrophysics (CAASTRO) 0000-0001-8018-1830), AB(International Centre for Radio Astronomy Research (ICRAR), Curtin University, Bentley, WA 6102, Australia; ARC Centre of Excellence for All-sky Astrophysics (CAASTRO)), AC(International Centre for Radio Astronomy Research (ICRAR), Curtin University, Bentley, WA 6102, Australia; ARC Centre of Excellence for All-sky Astrophysics (CAASTRO)), AD(CSIRO Astronomy and Space Science, Australia Telescope National Facility, PO Box 76, Epping, NSW 1710, Australia), AE(International Centre for Radio Astronomy Research (ICRAR), Curtin University, Bentley, WA 6102, Australia; CSIRO Astronomy and Space Science, 26 Dick Perry Avenue, Kensington, WA 6151, Australia), AF(International Centre for Radio Astronomy Research (ICRAR), Curtin University, Bentley, WA 6102, Australia; ARC Centre of Excellence for All-sky Astrophysics (CAASTRO)), AG(Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, USA 0000-0001-6295-2881), AH(CSIRO Astronomy and Space Science, Australia Telescope National Facility, PO Box 76, Epping, NSW 1710, Australia), AI(International Centre for Radio Astronomy Research (ICRAR), Curtin University, Bentley, WA 6102, Australia; ARC Centre of Excellence for All-sky Astrophysics (CAASTRO); CSIRO Astronomy and Space Science, Australia Telescope National Facility, PO Box 76, Epping, NSW 1710, Australia 0000-0001-8845-1225), AJ(International Centre for Radio Astronomy Research (ICRAR), Curtin University, Bentley, WA 6102, Australia; ARC Centre of Excellence for All-sky Astrophysics (CAASTRO))
Publication:
Publications of the Astronomical Society of Australia, Volume 34, id.e070 14 pp. (PASA Homepage)
Publication Date:
12/2017
Origin:
CUP
Astronomy Keywords:
instrumentation: interferometers, methods: observational, pulsars: general
Abstract Copyright:
2017: Astronomical Society of Australia
DOI:
10.1017/pasa.2017.66
Bibliographic Code:
2017PASA...34...70X

Abstract

The Murchison Widefield Array, and its recently developed Voltage Capture System, facilitates extending the low-frequency range of pulsar observations at high-time and -frequency resolution in the Southern Hemisphere, providing further information about pulsars and the ISM. We present the results of an initial time-resolved census of known pulsars using the Murchison Widefield Array. To significantly reduce the processing load, we incoherently sum the detected powers from the 128 Murchison Widefield Array tiles, which yields 10% of the attainable sensitivity of the coherent sum. This preserves the large field-of-view ( 450 deg2 at 185 MHz), allowing multiple pulsars to be observed simultaneously. We developed a WIde-field Pulsar Pipeline that processes the data from each observation and automatically folds every known pulsar located within the beam. We have detected 50 pulsars to date, 6 of which are millisecond pulsars. This is consistent with our expectation, given the telescope sensitivity and the sky coverage of the processed data ( 17 000 deg2). For 10 pulsars, we present the lowest frequency detections published. For a subset of the pulsars, we present multi-frequency pulse profiles by combining our data with published profiles from other telescopes. Since the Murchison Widefield Array is a low-frequency precursor to the Square Kilometre Array, we use our census results to forecast that a survey using the low-frequency component of the Square Kilometre Array Phase 1 can potentially detect around 9 400 pulsars.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)


Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints