Calendar

Feb
5
Mon
PDS Atmospheres Node meeting
Feb 5 @ 3:00 pm – 4:00 pm
Feb
19
Mon
PDS Atmospheres Node meeting
Feb 19 @ 3:00 pm – 4:00 pm
Mar
5
Mon
PDS Atmospheres Node meeting
Mar 5 @ 3:00 pm – 4:00 pm
Mar
19
Mon
PDS Atmospheres Node meeting
Mar 19 @ 3:00 pm – 4:00 pm
Apr
2
Mon
PDS Atmospheres Node meeting
Apr 2 @ 3:00 pm – 4:00 pm
Apr
3
Tue
PDS Atmospheres Node – NASA HQ Site Visit
Apr 3 @ 1:30 pm – 2:30 pm
Apr
16
Mon
PDS Atmospheres Node meeting
Apr 16 @ 3:00 pm – 4:00 pm
Apr
30
Mon
PDS Atmospheres Node meeting
Apr 30 @ 3:00 pm – 4:00 pm
Sep
17
Mon
PDS Atmospheres Node meeting
Sep 17 @ 1:30 pm – 2:30 pm
Oct
19
Fri
Colloquium: Sanchayeeta Borthakur (Host: Kristian Finlator)
Oct 19 @ 3:15 pm – 4:15 pm
Colloquium:  Sanchayeeta Borthakur (Host: Kristian Finlator) @ BX102

Understanding How Galaxies Reionized the Universe

 Sanchayeeta Borthakur, Arizona State University

Identifying the population of galaxies that was responsible for the reionization of the universe is a long-standing quest in astronomy. While young stars can produce large amounts of ionizing photons, the mechanism behind the escape of Lyman continuum photons (wavelength < 912 A) from star-forming regions has eluded us. To identify such galaxies and to understand the process of the escape of Lyman continuum, we present an indirect technique known as the residual flux technique. Using this technique, we identified (and later confirmed) the first low-redshift galaxy that has an escape fraction of ionizing flux of 21%. This leaky galaxy provides us with valuable insights into the physics of starburst-driven feedback. In addition, since direct detection of ionizing flux is impossible at the epoch of reionization, the residual flux technique presents a highly valuable tool for future studies to be conducted with the upcoming large telescopes such as the JWST.