Astronomy Colloquium for 2017-05-03

Series: Astronomy Colloquium
Date: Wednesday 03-May-2017
Time: 16:05-17:00 (4:05-5:00 pm)
Location: CSS 2400
Speaker: Dr. Sangeeta Malhotra (Arizona State University)
Title: “Lymna-alpha galaxies through cosmic time — from z=0.3 - 7$

Lyman-alpha photons are resonantly scattered by neutral hydrogen, to these photons. Yet we see a population of Lyma-alpha emitters at all redshifts. Is there anything different about these galaxies? What makes Lyman-alpha escape? I will try to address these questions based on recent (and older) observations. By understanding the Lyman-alpha escape from galaxies at lower redshifts we hope to fine-tune them to diagnose the neutral fraction of the intergalactic gas at the epoch of reionization.

Colloquia are usually preceded by espresso and ice cream at 1:45 pm outside room PSC 1150 and are followed by an informal reception at 5:15 pm in that room. Anyone interested in talking with the speaker, or being added to the colloquium announcement email list, should contact the colloquium organizer. Lunch will normally be reserved for the speaker to talk to graduate students.

Colloquium Organizer: Prof. Stuart Vogel


Special accommodations for individuals with disabilities can be made by calling (301) 405-3001. It would be appreciated if we are notified at least one week in advance.


Directions and information about parking can be found here.

This page was automatically generated on: 24-Apr-2017.