Are the infrared-faint radio sources pulsars?

Details Are the infrared-faint radio sources pulsars? Are the infrared-faint radio sources pulsars?

2011-03-30

arxiv.org/abs/1103.6062v2

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

4 pages, accepted for publication in MNRAS

Scientific paper

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 0.21 mJy (assuming a 50% duty cycle). This is well below the flux density of the IFRS. We therefore conclude that these IFRS are not radio pulsars.

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