Upcoming Events

Rare X-ray Bursts and Superbursts from Neutron Stars

March 4, 2013 3:30PM to 4:30PM
Presenter 
Laurens Keek, Michigan State University
Location 
Building 203, Room R150
Type 
Seminar
Series 
Physics Division Seminar
Abstract:
Hydrogen and helium accreted onto a neutron star undergo runaway thermonuclear burning, which is frequently observed as brief X-ray bursts. In the ashes layer, carbon fusion produces rare powerful superbursts. Although numerical models have been successful in explaining certain observed bursts, many important aspects remain unexplained. We show the latest observations and models of rare X-ray bursts such as superbursts. Furthermore, we discuss how the transition from bursts to stable burning depends on the breakout reactions from the CNO cycle and the experimental uncertainty in their rates.