Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    An Arecibo search for pulsars and transient sources in M33

    Access Status
    Open access via publisher
    Authors
    Bhat, Ramesh
    Cordes, J.
    Cox, P.
    Deneva, J.
    Hankins, T.
    Lazio, T.
    McLaughlin, M.
    Date
    2011
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Bhat, R. and Cordes, J. and Cox, P. and Deneva, J. and Hankins, T. and Lazio, T. and McLaughlin, M. 2011. An Arecibo search for pulsars and transient sources in M33. Astrophysical Journal. 732 (1).
    Source Title
    Astrophysical Journal
    DOI
    10.1088/0004-637X/732/1/14
    ISSN
    0004-637X
    School
    Curtin Institute of Radio Astronomy (Physics)
    URI
    http://hdl.handle.net/20.500.11937/56011
    Collection
    • Curtin Research Publications
    Abstract

    We report on a systematic and sensitive search for pulsars and transient sources in the nearby spiral galaxy M33, conducted at 1.4 GHz with the Arecibo telescope's seven-beam receiver system, ALFA. Data were searched for both periodic and aperiodic sources, up to 1000 pc cm -3 in dispersion measure and on timescales from ~50µs to several seconds. The galaxy was sampled with 12 ALFA pointings, or 84pixels in total, each of which was searched for 2-3hr. We describe the observations, search methodologies, and analysis strategies applicable to multibeam systems, and comment on the data quality and statistics of spurious events that arise due to radio frequency interference. While these searches have not led to any conclusive signals of periodic or transient nature that originate in the galaxy, they illustrate some of the underlying challenges and difficulties in such searches and the efficacy of simultaneous multiple beams in the analysis of search output. The implied limits are ?5 µJy Mpc 2 in luminosity (at 1400MHz) for periodic sources in M33 with duty cycles ?5%. For short-duration transient signals (with pulse widths ?100µs), the limiting peak flux density is 100mJy, which would correspond to a 5s detection of bright giant pulses (~20 kJy) from Crab-like pulsars if located at the distance of M33. We discuss the implications of our null results for various source populations within the galaxy and comment on the future prospects to conduct even more sensitive searches with the upcoming next-generation instruments including the Square Kilometer Array and its pathfinders. © 2011. The American Astronomical Society. All rights reserved.

    Related items

    Showing items related by title, author, creator and subject.

    • A pilot survey for transients and variables with the Australian Square Kilometre Array Pathfinder
      Bhandari, S.; Bannister, K.; Murphy, T.; Bell, M.; Raja, W.; Marvil, J.; Hancock, Paul; Whiting, M.; Flynn, C.; Collier, J.; Kaplan, D.; Allison, J.; Anderson, C.; Heywood, I.; Hotan, A.; Hunstead, R.; Lee-Waddell, K.; Madrid, J.; McConnell, D.; Popping, A.; Rhee, J.; Sadler, E.; Voronkov, M. (2018)
      We present a pilot search for variable and transient sources at 1.4 GHz with the Australian Square Kilometre Array Pathfinder (ASKAP). The search was performed in a 30 deg2 area centred on the NGC 7232 galaxy group over ...
    • A Population of Fast Radio Bursts at Cosmological Distances
      Thornton, D.; Stappers, B.; Bailes, M.; Barsdell, B.; Bates, S.; Bhat, Ramesh; Burgay, M.; Burke-Spolaor, S.; Champion, D.; Coster, P.; D'Amico, N.; Jameson, A.; Johnston, S.; Keith, M.; Kramer, M.; Levin, L.; Milia, S.; Ng, C.; Possenti, A.; van Straten, W. (2013)
      Searches for transient astrophysical sources often reveal unexpected classes of objects that are useful physical laboratories. In a recent survey for pulsars and fast transients, we have uncovered four millisecond-duration ...
    • Follow Up of GW170817 and Its Electromagnetic Counterpart by Australian-Led Observing Programmes
      Anderson, Gemma; Bland, Philip; Booler, Tom; Crosse, Brian; Cupák, Martin; de Gois, J.S.; Devillepoix, Hadrien; Emrich, David; Franzen, Thomas; Hancock, Paul; Hartig, Ben; Horsley, L.; Howie, Robert; Kenney, David; Paxman, Jonathan; Sansom, Eleanor; Shannon, Ryan; Sokolowski, Marcin; Steele, K.; Tingay, Steven; Towner, Martin; Trott, Cathryn; Walker, Mia; Wayth, Randall; Williams, Andrew (2017)
      The discovery of the first electromagnetic counterpart to a gravitational wave signal has generated follow-up observations by over 50 facilities world-wide, ushering in the new era of multi-messenger astronomy. In this ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.