Colloquium Series

Time: Thursday 25 June 2015 – 1:00pm
Place: New Horizons (Building 82), Theatre G29 (map)

Life after death: the X-ray and gamma-ray emission from the remnants of stars

Katie Auchettl, Monash University and Harvard-Smithsonian Center for Astrophysics

When a star dies, the energy from the supernova explosion forms an expanding shock wave that interacts with surrounding material, creating what we know as a supernova remnant (SNR). If the original star has a mass greater than 8 solar masses, this can also lead to the formation of a rapidly rotating neutron star called a pulsar. As these objects evolve, they interact with the surrounding environment, producing non-thermal and thermal emission. Detection of this emission can provide a unique window into studying the acceleration, and interaction of highly energetic particles called cosmic rays with the interstellar medium. In addition, they providing information about the evolution, characteristics and dynamics of these objects; as well as details about the original progenitor star. In this talk, I will present some recent results in which we use X-ray and gamma-ray satellites to shed light on the properties of SNR MSH 11-61A and pulsar PSR J1741-2054.


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