BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-3275
DTSTART:20140130T203000Z
DURATION:PT1H0M0S
DTSTAMP:20260419T193923Z
LAST-MODIFIED:20140130T142448Z
LOCATION:4274 Chamberlin Hall
SUMMARY:Understanding Nature's Particle Accelerators Using Multi-wavel
 ength Signatures\, NPAC (Nuclear/Particle/Astro/Cosmo) Forum\, Udara A
 beysekara\, Michigan State
DESCRIPTION:Nature's particle accelerators\, such as Pulsars\, Pulsar 
 Wind Nebulae\, Active Galactic Nuclei and Supernova Remnants accelerat
 e charged particles to very high energies that then produce high energ
 y photons. The particle acceleration mechanisms and the high energy ph
 oton emission mechanisms are poorly understood phenomena. These mechan
 isms can be understood either by studying individual sources in detail
  or\, alternatively\, using the collective properties of a sample of s
 ources. Recent development of GeV survey instruments\, such as Fermi-L
 AT\, and TeV survey instruments\, such as Milagro and HAWC\, provides 
 a large sample of high energy gamma-ray flux measurements from galacti
 c and extra-galactic sources. In this talk\, I will present a new mult
 i-wavelength technique\, developed to study the collective properties 
 of a given GeV pulsar sample\, using the GeV-TeV correlation between p
 ulsars and their associated pulsar wind nebulae. This method is able t
 o measure the beaming factor vs. pulsar spin-down luminosity distribut
 ion of a Fermi-LAT GeV pulsar sample.  Interestingly\, it appears that
  pulsar acceleration model simulations may be distinguishable by their
  beaming factor predictions. I will also compare the simulated beaming
  factor vs. pulsar spin-down luminosity distributions with the experim
 ental results and present the future phase of this technique.
URL:https://www.physics.wisc.edu/events/?id=3275
END:VEVENT
END:VCALENDAR