Cornell University

This is a past event. Its details are archived for historical purposes.

The contact information may no longer be valid.

Please visit our current events listings to look for similar events by title, location, or venue.

Cornell Department of Astronomy and Space Sciences Colloquium

Thursday, September 24, 2020 at 4:00pm to 5:00pm

Virtual Event

"A first sign from the neutron star in SN 1987A"

Abstract: After three decades, the neutron star formed by SN 1987A has likely given us a first sign of its presence: a blob of warm dust near the center of the explosion. I will summarize our understanding of the explosion, the structure of the supernova remnant, and the characteristics of "the blob”. I will describe in detail the possible explanations for the excess of energy coming out of the blob: radioactive heating, accretion onto a black hole or energy output from a neutron star. In the latter case, it could be either accretion energy, the power output from a pulsar or simply the thermal radiation from a hot young star. Our study strongly favors thermal radiation, but the alternatives cannot be totally ruled out. An important consequence of this is that this young neutron star is definitely not an energetic pulsar and more likely a new member of the growing family of Central Compact Objects (CCOs) that constitute about 25% of the young neutron star population and show no signs of pulsar activity.

Dial-In Information

The colloquia are held every Thursday afternoon 4-5 pm. The public is welcome. To view via Zoom, please contact Monica Carpenter (mla20@cornell.edu) or Jason Jennings (jej34@cornell.edu) for the link.

Subscribe
Google Calendar iCal Outlook
Event Type

Lecture

Departments

Astronomy

Website

https://astro.cornell.edu/lectures-co...

Contact E-Mail

mla20@cornell.edu

Contact Name

Monica Carpenter

Contact Phone

6072553727

Speaker

Dany Page

Speaker Affiliation

Universidad Nacional Autónoma de México

Recent Activity