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Title:
Recent discoveries in the dynamic radio sky
Authors:
Kramer, Michael
Affiliation:
AA(The University of Manchester, Jodrell Bank Observatory, Jodrell Bank, Macclesfield, Cheshire SK11 9DL, UK)
Publication:
HIGH TIME RESOLUTION ASTROPHYSICS: The Universe at Sub-Second Timescales. AIP Conference Proceedings, Volume 984, pp. 63-72 (2008). (AIPC Homepage)
Publication Date:
02/2008
Origin:
AIP
PACS Keywords:
Neutron stars, Pulsars, Radio sources
DOI:
10.1063/1.2896947
Bibliographic Code:
2008AIPC..984...63K

Abstract

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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