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ASD Colloquium Series - Fall 2019

ASD Colloquium Series - Fall 2019

The Astrophysics Science Division colloquia occur on Tuesdays at 3:45 pm, with an opportunity to meet the speaker at 3:30 pm, in building 34, room W150 (unless otherwise noted). Schedules from past colloquium seasons are available.

Contact: Knicole Colon

August

Aug 27 Special Location: Building 34, Room W120A/B
Charlie Conroy (Harvard University) - Assembling our Galaxy

September

Sep 03 No Colloquium
Sep 10 Marcelle Soares-Santos (Brandeis University)
Sep 17 Special Location: Building 34, Room W120A/B
Jessica Werk (University of Washington)
Sep 24 Matteo Cantiello (Flatiron Institute)

October

Oct 01 Cara Battersby (University of Connecticut)
Oct 08 Special Location: Building 34, Room W120B
Davide Lazzati (Oregon State University)
Oct 15 Kirsten Hall (Johns Hopkins University)
Oct 22 Chanda Prescod-Weinstein (University of New Hampshire) - Making a Universe with Axions
Oct 29 Special Location: Building 34, Room W305
Jessie Christiansen (NASA Exoplanet Science Institute)

November

Nov 05 Special Location: Building 3 Auditorium
Erika Hamden (University of Arizona)
Nov 12 Kari Frank (Northwestern University)
Nov 19 Stephen Taylor (Caltech)
Nov 26 No Colloquium - Thanksgiving Week

December

Dec 03 Ryan Trainor (Franklin and Marshall College)
Dec 10 Michele Trenti (University of Melbourne)

Assembling our Galaxy

Charlie Conroy

Harvard University

Tuesday, Aug 27, 2019

Abstract

I will review ongoing work aimed at understanding when and how the major structural components of our Galaxy came into place. The combination of Gaia DR2 and spectroscopic data has revealed that the stellar halo contains a remarkable degree of structure, and appears to have formed partially by dynamical processes within the disk, and partially from accreted dwarf galaxies. Our simulations of the stellar disk predict that the clustered nature of star formation imprints a high degree of structure in phase+chemistry space. This structure is now being measured in the data, and promises to deliver new insights into the nature of star formation and the dynamical history of the disk.

Making a Universe with Axions

Chanda Prescod-Weinstein

University of New Hampshire

Tuesday, Oct 22, 2019

Abstract

What’s an axion and why do people keep talking about Bose-Einstein condensates in space? In this talk, I will describe the axion as a popular solution for open problems in particle physics, most notably dark matter. I will discuss the possibility that neutron stars are astrophysical axion laboratories and what we may learn in future endeavors, including proposed X-ray and Gamma-ray missions such as STROBE-X, eXTP, and AMEGO.


Past Colloqia Schedules

2019: Fall, Spring
2018: Fall, Spring
2017: Fall, Spring
2016: Fall, Spring
2015: Fall, Spring
2014: Fall, Spring
2013: Fall, Spring, Summer
2012: Fall, Spring
2011: Fall, Spring
2010: Fall, Spring

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