BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//UM//UM*Events//EN
CALSCALE:GREGORIAN
BEGIN:VTIMEZONE
TZID:America/Detroit
TZURL:http://tzurl.org/zoneinfo/America/Detroit
X-LIC-LOCATION:America/Detroit
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20070311T020000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20071104T020000
RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTAMP:20260921T093447
DTSTART;TZID=America/Detroit:20260924T153000
DTEND;TZID=America/Detroit:20260924T163000
SUMMARY:Conference / Symposium:Astronomy Colloquium | Post Doc Colloquium
DESCRIPTION:Sayak’s Title: Probing the circumgalactic medium of low redshift galaxies\n\nAbstract: The circumgalactic medium (CGM) retains imprints of the physical processes that drive galaxy evolution\, encoded in its physical conditions and chemical composition. Quasar absorption line spectroscopy offers a sensitive means of probing this tenuous medium\; however\, it requires a statistically significant sample of quasar-galaxy pairs to effectively map the CGM. In this talk\, I will discuss efforts to map the CGM traced by neutral hydrogen (H I) and highly ionized oxygen (O VI) with a core sample using MUSEQuBES (MUSE Quasar-Field Blind Emitters Survey) at low redshift (z<1) complemented by archival observations. Finally\, I will briefly discuss efforts to map the CGM in emission using integral-field spectroscopy with MUSE\, highlighting one serendipitous discovery.\n\nPrasad’s Title: Optical Frequency Comb Enabled Time–Frequency Characterization of Entangled Ultrafast Biphotons\n\nAbstract: Optical frequency combs are specialized laser sources that act like a ruler for light enable applications from atomic clocks to exoplanet searches. We harness their precisely controlled pulses for ultrafast quantum state characterization. Direct measurements of biphotons remain challenging because single-photon detectors lack femtosecond resolution and conventional pump-probe methods require long acquisition times. Using 93 fs Yb comb pulses for frequency-upconversion optical sampling\, we achieve sub-100 fs timing resolution and reconstruct a 1.42 ps cross-correlation of picowatt Er comb pulses. The method rapidly measures biphoton joint temporal and spectral intensities simultaneously\, enabling study of ultra fast time-frequency quantum correlations.
UID:152507-21913845@events.umich.edu
URL:https://events.umich.edu/event/152507
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Astronomy,astrophysics,Colloquium,Colloquium Series,physics
LOCATION:West Hall - 411
CONTACT:
END:VEVENT
END:VCALENDAR