MN Institute for Astrophysics Colloquium

All future

Friday, February 23rd 2018
Speaker: Attila Kovacs (SAO)
Subject: Far-infrared frontiers

The far-infrared (FIR) and (sub)millimeter bands provide us with unique views of structure formation in the Universe and the Galaxy alike. At these wavelengths we have the most adept probes of active star-formation that sample almost all of the reionized Universe (z~1--10) with essentially no bias. The Sunyayev Zel'dovich effect traces the assembly of galaxy clusters regardless of cosmological distance. Locally, in the Galaxy, FIR polarimetry probes the magnetic environments and dust properties around optically obscured young stars and cores, while FIR spectroscopy can spy on the ices in planetary disks. I will also highlight some of the ground-braking recent and upcoming instrumentation and technologies I work on to can deliver this scientific treasure trove.

Friday, March 2nd 2018
Speaker: Dr. Mateusz Ruszkowski, U. Michigan
Faculty Host: Thomas W. Jones

Friday, March 9th 2018
Speaker: David Sand, U. Arizona
Subject: Unveiling the Physics and Progenitors of Cosmic Explosions with a One Day Cadence Supernova Search

Supernovae (SNe) are a linchpin for understanding the chemical evolution and star formation history of the Universe. Despite progress, some of the most basic questions about SNe persist, and we seek to answer the question: What are the explosion mechanisms and progenitor star systems of SNe? In the early hours to days after explosion, SNe provide clues to how they explode, and what their
progenitor star systems were. Observing these ephemeral signatures requires a fast search cadence and immediate spectroscopic response, a dual feat which has been difficult to achieve. Motivated by the need to discover, and study, SNe within the first day of explosion, we have begun a one-day cadence SN search of nearby galaxies (D<40 Mpc; also known as the DLT40 Survey) with a PROMPT 0.4-m telescope directly tied to the robotic FLOYDS spectrographs, a pair of instruments that I helped to develop. Here I will highlight our team's initial discoveries, with an eye towards what will be achievable with future time domain
surveys -- perhaps including nearly automated follow-up of LSST transients and Advanced LIGO gravitational wave events with the suite of Steward Observatory's small telescopes.

Faculty Host: M. Claudia Scarlata

Friday, March 16th 2018
Speaker: No colloquium this week - Spring Break

Friday, March 23rd 2018
Speaker: Dr. Jordan Stone, U. Arizona
Faculty Host: Charles E. Woodward

Friday, March 30th 2018
Speaker: Lou Stolger, Space Telescope

Friday, April 6th 2018
Speaker: No colloquium this week.

Friday, April 13th 2018
Speaker: T. Rivera-Thorsen, Institute of Theoretical Astrophysics
Faculty Host: M. Claudia Scarlata

Friday, April 20th 2018
Speaker: No colloquium - See info for the Kaufmanis Public Lecture on the 18th

Friday, April 27th 2018
Speaker: Dr. Christian Veillet, Large Binocula Telescope Observatory (LBTO)
Faculty Host: Charles E. Woodward

Friday, May 4th 2018
Speaker: Dr. Silva Protoppa, U. Maryland
Faculty Host: Charles E. Woodward

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