Astrolunch: Sivan Ginzburg (Berkeley)

Date: 
Tue, 26/05/2020 - 16:00 to 17:00

NOTE THE UNUSUAL TIMING!!
Title: Black Widow Evolution
Abstract: Black widows are millisecond pulsars with low-mass companions (~2% the mass of the sun) on short orbits of several hours. When the first black widow was discovered in 1988, it was proposed that its companion is the remnant of a main sequence star that had been evaporated by the pulsar’s high energy radiation. I will present new observations from the last decade that challenge this picture, and discuss how the growing population of black widows can be explained consistently.