Looking for a Pulse

Brown Dwarf
Artist's impression of a brown dwarf with "super-aurorae" at its magnetic poles,
causing the pulsed radio emission.

This lecture was delivered by Prof. Gerry Doyle of Armagh Observatory to a meeting of the Irish Astronomical Association held on 10th December 2008 at QUB Physics Department. It presents recent observations and new understanding of radio emissions from brown dwarfs and similar objects.

"Looking for a Pulse"
MPEG 4 Podcast
Questions and Answers
MPEG 4 Podcast

Related Publications in PDF format:
Confirmation of the Electron Cyclotron Maser Instability as the Dominant Source of Radio Emission from Very Low Mass Stars and Brown Dwarfs
A Mini-survey of Ultracool Dwarfs at 4.9 GHz
Rotational Modulation of M/L Dwarfs due to Magnetic Spots
Sporadic Long-term Variability in Radio Activity from a Brown Dwarf
A search for electron cyclotron maser emission from compact binaries

See also:
Other Videos on this Web Site

Last Revised: 2009 November 6th