Event

Department of Physics & Astronomy Lecture Series

Date, time, location

Date Thursday, December 12, 2019

Time 4:35 pm to 5:45 pm

Location

Wright Laboratory of Physics

110 N. Professor St.
Oberlin, OH 44074

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’’Giant Pulsars from Tiny Stars’’ is the title of the talk to be presented by Natalia Lewandowska, postdoctoral fellow at West Virginia University.

Abstract:  A supernova explosion can leave a fast rotating, highly magnetized neutron star (commonly referred to as pulsar) behind.  An inclined magnetic field, co-rotating with the pulsar, leads to the formation of a complex, plasma-filled magnetosphere.  Pulsed emission from subsequent rotations can look very different, suggesting a dynamic magnetosphere and a reason to study the properties of single pulses.

A small fraction of the single pulses, known as giant pulses, observed at radio wavelengths are much more energetic than the observed regular emission.  Their high energies open the possibility to see connections between giant pulses at radio wavelengths and pulsar emission at higher energies.  I will give an overview of what we know about the single pulse emission of two frequently studied pulsars, the Crab and Vela pulsar, underlining currently open questions.

A reception for Lewandowska begins at 4:10 p.m. in the Anderson Lounge, Wright Lab, second floor.

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