BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY: Cygnus X-3 in 2024: many giant radio flares! - Prof. Dave Green (
 Cavendish Astrophysics)
DTSTART:20250304T111500Z
DTEND:20250304T120000Z
UID:TALK228574@talks.cam.ac.uk
CONTACT:Charles Walker
DESCRIPTION:Cygnus X-3 is a `high mass X-ray binary'\, which was first det
 ected in the early days of X-ray astronomy\, in 1966. It is also seen in t
 he radio and the infra-red (but not optically due to obscuration). The emi
 ssion is\ndue to accretion from the companion star onto the compact source
 \, thought to be a Wolf-Rayet star and a black hole respectively. It occas
 ionally shows giant fares\, and has been monitored -- approximately daily 
 -- for several years with the Arcminute Microkelvin Image (AMI) at Lord's 
 Bridge\, SW of Cambridge. During 2022 and 2023 was placid\, with little va
 riation in its radio (or X-ray) emission\, but in 2024 it showed five gian
 t radio flares\, brightening from a few mJy to > 10 Jy over a few days.
LOCATION:Martin Ryle Seminar Room\, Kavli Institute
END:VEVENT
END:VCALENDAR