Are the infrared-faint radio sources pulsars?

Research output: Contribution to journalArticle

  • External authors:
  • A. D. Cameron
  • G. Hobbs
  • R. P. Norris
  • M. Y. Mao
  • E. Middelberg


Infrared-faint radio sources (IFRS) are objects which are strong at radio wavelengths but undetected in sensitive Spitzer observations at infrared wavelengths. Their nature is uncertain and most have not yet been associated with any known astrophysical object. One possibility is that they are radio pulsars. To test this hypothesis we undertook observations of 16 of these sources with the Parkes Radio Telescope. Our results limit the radio emission to a pulsed flux density of less than 0.21mJy (assuming a 50 per cent duty cycle). This is well below the flux density of the IFRS. We therefore conclude that these IFRS are not radio pulsars. © 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS.

Bibliographical metadata

Original languageEnglish
Pages (from-to)845-848
Number of pages3
JournalMonthly Notices of the Royal Astronomical Society
Issue number1
Publication statusPublished - Jul 2011