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The Peculiar Pulsar Population in the Galactic Center and other projects

Event Details

Event Dates: 

Friday, October 17, 2014 - 12:00pm

Seminar Location: 

  • CASA Conference Room C324

Speaker Name(s): 

Ryan O'Leary

Speaker Affiliation(s): 

Seminar Type/Subject

Scientific Seminar Type: 

  • Astrophysics Lunch Seminar

Event Details & Abstract: 

I will discuss the implications of the recent detection of radio pulsations from the magnetar in the Galactic center. Despite predictions of large populations of both ordinary and millisecond pulsars in the Galactic center, none have been detected within 25 pc by deep radio surveys. I will argue that an intrinsic deficit in the ordinary pulsar population is the most likely reason for the lack of detections to date: a "missing pulsar problem" in the Galactic center. In contrast, I will show that the discovery of a single magnetar implies efficient magnetar formation in the region. In addition I will present new observtions that shed light on the formation of the Galactic center magnetar and the putative kick it received. I will also briefly introduce a few other projects I am working on including gas cloud/wind interactions, how one may constrain the formation of the first black holes, and alternative sources of the Galactic center's gamma-ray excess.