Colloquium - Dr. Thomas Maccarone | Department of Physics

Colloquium - Dr. Thomas Maccarone

Event Information
Event Date: 
Tuesday, February 28, 2017 - 3:15pm
Event Location: 
Physics Building - Room 104

Associate Professor

Texas Tech University

*Refreshments will be served in the Student Lounge at 3:15 PM

Title: Searching for Exotic Stars in The Chandra Galactic Bulge Survey

Abstract: The evolution of close binary stars (i.e. pairs of stars with mass transfer between the components) is one of the most challenging ones in all of astrophysics. A full theoretical exploration of the topic requires a 3D treatment of a wide range of timescales, from hours to billions of years. An observational treatment requires a careful understanding of sample selection effects. At the same time, the problem is quite important, since a wide range of phenomena, ranging from the production of gravitational wave sources to the production of millisecond radio pulsars (nature's best clocks) to a production of a large fraction of the chemical elements, depends strongly on the effects of binary stars. I will discuss a multi-wavelength, multi-timescale survey of a 12 square degree region of the Galactic Bulge aimed at providing the definitive observational survey to study binary evolution products. The survey field encompasses about 10% of the stellar mass of the Galaxy, avoids the areas with the most foreground dust, and is well covered by a combination of dedicated and public surveys overlapping with the field. Some highlights include a new double white dwarf binary, and a variety of new stars undergoing brightness changes of factors of hundreds due to unstable disks of matter being dumped onto accreting stars.

Thinking about UNT?

It's easy to apply online. Join us and discover why we're the choice of over 37,000 students.

Apply now