Recent discoveries in the dynamic radio sky

Details Recent discoveries in the dynamic radio sky Recent discoveries in the dynamic radio sky

Feb 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc..984...63k&link_type=abstract

HIGH TIME RESOLUTION ASTROPHYSICS: The Universe at Sub-Second Timescales. AIP Conference Proceedings, Volume 984, pp. 63-72 (20

Astronomy and Astrophysics

Astrophysics

Neutron Stars, Pulsars, Radio Sources

Scientific paper

Despite radio astronomy being a mature science, a large fraction of discovery phase space is still unexplored. This part of the discovery space encapsulates transient sources, and indeed we can expect that a large number of sources is yet to be discovered which emit electromagnetic radiation only for a limited period of time. The first glimpse of the plethora of unknown sources was given recently by our discovery of new classes of neutron stars. One class is given by the so-called Rotating Radio Transients (RRATs) which were discovered in what is the largest survey of the dynamic radio sky along the Galactic plane. With recent detections at X-rays, we have confirmed the nature of RRATs as rotating neutron stars which emit short flashes of radio light, for no longer than a total emission time of less than one second per day. Another class of neutron stars occupying a different area of phase space are Intermittent Pulsars, which appear as normal radio pulsars for only about 20% of the time while being completely undetectable for the remaining 80%. I will review these and other recent discoveries, summarize the source properties and will finally look at the astrophysical implications.

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