Sciences and Exploration Directorate

Israel Martinez Castellanos

(RESEARCH SCIENTIST)

Israel Martinez Castellanos's Contact Card & Information.
Email: israel.martinezcastellanos@nasa.gov
Org Code: 661
Address:
NASA/GSFC
Mail Code 661
Greenbelt, MD 20771
Employer: UNIV OF MARYLAND COLLEGE PARK

Brief Bio


I study compact objects producing relativistic jets, including gamma-ray bursts (GRBs) and active galactic nuclei (AGN). I am particularly interested in searching for transient and variable gamma-ray signals in combination with other wavelengths and other astronomical “messenger channels” —such as neutrinos and gravitational waves.


I focus on computational and statistical techniques to analyze gamma-ray data from diverse, complex, and large datasets. I am involved in multiple projects spanning the whole gamma-ray spectrum in ground-based and spaceborne instruments. 


I currently lead the development of the cosipy library, the scientific analysis software for the Compton Spectrometer and Imager (COSI), scheduled to fly in 2027, sensitive to gamma rays in the MeV band. 


I am also part of the BurstCube team, a CubeSat sensitive to gamma rays in the 50 keV to 1 MeV range. It was deployed from the International Space Station in April 2024 and is currently under commissioning. 


During my Ph.D. I worked on the High-Altitude Water Cherenkov Observatory (HAWC), a gound-based located in Mexico and sensitive to very-high-energy gamma rays in the 100 GeV to 100 TeV range. I dedicated most of my thesis work to developing rapid analysis pipelines to follow-up sources emitting gravitational waves and neutrinos. I remain active in the HAWC collaboration, and I am currently performing joint studies combining HAWC and Fermi-LAT data.

Education


University of Maryland

PhD in Physics (2014 - 2019)

Dissertation: Search for gamma-ray counterparts of gravitational wave events and other transient signals with HAWC

Advisor: Prof. Jordan A. Goodman


Tecnológico de Monterrey, Mexico

Bachelor in Engineering Physics (2009- 2013)