Date of Award


Document Type

Open Access Master's Thesis

Degree Name

Master of Science in Physics (MS)

Administrative Home Department

Department of Physics

Advisor 1

Petra Huentemeyer

Committee Member 1

Brian Fick

Committee Member 2

Elena Giusarma


HAWC J2031+415 is a probable pulsar wind nebula (PWN) located in the Cygnus Cocoon region near a complex OB star cluster. First observed by the High-Energy-Gamma-Ray Astronomy (HEGRA) observatory in the TeV energy regime, the source had no apparent counterpart in lower energy ranges. Previous work using 1343 days of data from the High-Altitude Water Cherenkov (HAWC) Gamma-Ray Observatory has determined that three sources are present in the Region of Interest (ROI): HAWC J2031+415, HAWC J2030+409 (also known as the Cocoon), and 3HWC J2020+403 (associated with the Gamma Cygni supernova remnant) \cite{Ian_01, Binita_01}.

In this work, I use the newest data set containing 2000 days of data from HAWC to analyze the region. I apply a systematic source searching method to determine the number of sources, their locations, and spectra. Three estimators are used to determine the spectral energy distribution for HAWC J2031+415 and the best fit is found to be a power law with an exponential cut-off. I then isolate HAWC J2031+415 and perform an energy-dependent morphology study of the source. No measurable energy dependence of the morphology was found. Additional data will allow for more detailed studies of the region.

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.