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Physics & Astronomy Colloquium - Dr. Sasha Philippov, University of Maryland

Title: "Fireworks produced by extreme plasmas near neutron stars and black holes"

1/27/2023
3:30 pm – 4:30 pm
Wilder 104 and Zoom
Intended Audience(s): Public
Categories: Arts and Sciences, Lectures & Seminars

Abstract: Astrophysical compact objects, neutron stars and black holes, are powerful sources of broad-band non-thermal electromagnetic emission, including coherent radio and high-energy radiation. The collective behavior of plasmas that produce these emission signatures is still poorly understood. In this talk I will describe a few examples of modeling the observed light coming from these remarkable objects using first-principles numerical simulations. First, I will describe recent progress in understanding the multi-wavelength pulsar emission mechanism, including the long-standing problem of the generation of coherent radio waves. Second, I will discuss how accretion flows around supermassive black holes, such as SgrA* and M87* recently imaged by the Event Horizon Telescope, can produce powerful electromagnetic flares. 

Hosted by Yi-Hsin Liu

Please click the link below to join the webinar:
https://dartmouth.zoom.us/j/92598910992?pwd=TzE5Qlg0TW1CTGczTnhVZmVkMVo1QT09
Passcode: Physics

 

For more information, contact:
Tressena Manning
tressena.a.manning@dartmouth.edu
6036462854
Permanent URL to this event: https://physics.dartmouth.edu/events/event?event=69382

Events are free and open to the public unless otherwise noted.