|COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring.|
New Results from the Cosmic Origins Spectrograph: Missing Baryons, AGN, and Reionization
If you have a question about this talk, please contact Michele Trenti.
I present a survey of ultraviolet spectroscopic observations with the Cosmic Origins Spectrograph on the Hubble Space Telescope. I will describe the current status of the local baryon census, observations and theoretical modeling of thermal phases of the intergalactic medium (IGM), and the extent of heavy element transport away from galaxies. Other new results include the COS composite spectrum of quasar ultraviolet continuum and emission lines, and probes of the Helium-II epoch of reionization at redshifts z = 2.5 to 3.3. We have also used COS “parallel observations” with the new Wide-Field Camera-3 to discover high-redshift galaxies likely responsible for hydrogen reionization at z = 7-8.
This talk is part of the Institute of Astronomy Colloquia series.
This talk is included in these lists:
Note that ex-directory lists are not shown.
Other listsTopological Solitons International Cafe Scientifique Cambridgeshire Bird Club
Other talksDeveloping a Sense of Self Age-related and individual differences in the time-course and information content of early face brain activity Print Media in the Colonial World Genomic technologies Building Stones of Cambridge. Geology walking tour. Neural mechanisms of spatial and episodic memory