Analysis Methods for Milky Way Dark Matter Halo Detection

Conference · Thu Oct 11 00:00:00 EDT 2007 · AIP Conf.Proc.921:570-571,2007

OSTI ID:917727

Sander, Aaron; Winer, Brian; Hughes, Richard; Wai, Larry; Moskalenko, Igor V

We present methods for the analysis of dark matter annihilation in the smooth halo of the Milky Way galaxy. We model the diffuse gamma-ray background using GALPROP, and model the halo using an NFW profile and the gamma-ray spectrum for WIMP pair annihilation. We plan to combine these models with the point source catalog and a simple model for the extragalactic gamma ray background. Using the downhill simplex method to converge on the maximum likelihood value, we can vary key parameters in these models and fit them to the gamma-ray data. Through the use of the Markov Chain Monte Carlo (MCMC) method we can then map out the likelihood as a function of the model parameters to estimate the correlated errors on these parameters.

• Research Organization: Stanford Linear Accelerator Center (SLAC)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 917727
• Report Number(s): SLAC-PUB-12876
• Conference Information: Journal Name: AIP Conf.Proc.921:570-571,2007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANNIHILATION
Astrophysics
Instrumentation
ASTRO
INST
CHAINS
DETECTION
MILKY WAY
NONLUMINOUS MATTER
POINT SOURCES