A search for radio pulsations from neutron star companions of four subdwarf B stars

Details A search for radio pulsations from neutron star companions of four subdwarf B stars A search for radio pulsations from neutron star companions of four subdwarf B stars

2011-06-10

arxiv.org/abs/1106.2053v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

Accepted for publication in A&A, 4 pages, 1 figure

Scientific paper

We searched for radio pulsations from the potential neutron star binary companions to subdwarf B stars HE 0532-4503, HE 0929-0424, TON S 183 and PG 1232-136. Optical spectroscopy of these subdwarfs has indicated they orbit a companion in the neutron star mass range. These companions are thought to play an important role in the poorly understood formation of subdwarf B stars. Using the Green Bank Telescope we searched down to mean flux densities as low as 0.2 mJy, but no pulsed emission was found. We discuss the implications for each system.

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