The HEASARC welcomes your participation in a brief survey
to capture how users access and utilize HEASARC data, software, and services. The outcome(s) of this survey will be used to guide, prioritize, and plan our activities and development in the coming years. It contains 18 questions, generally takes just a few minutes to complete, and your answers will remain totally anonymous. We thank you in advance for your valuable feedback.
Fermi Fridays - April
Gamma rays are created by some of the most powerful objects in the universe. So how is it normal thunderstorms on the Earth
are seen to generate flashes of gamma rays? Find out more about the odd phenomenon called Terrestrial Gamma-ray Flashes (TGFs).
To see a wide variety of sources both outside and inside our
Galaxy, GBM has 14 detectors pointing in different directions. Together, these detectors view the entire
part of the sky that is not covered by the Earth. Because of their orientation, some detectors are
viewing the Earth as well, which is how GBM can see and study Terrestrial Gamma-ray Flashes.
Scientists would like to know whether gamma-ray flashes from
the Earth are related to lightning. To do that, they need to compare with measurements made of
thunderstorms and lightning in other wavebands.
Fermi's friends in the Advanced 2D Animation class at
the Maryland Institute College of Art (MICA) have been inspired by Terrestrial Gamma-ray
Flashes (TGFs) to produce some artistic views of these thunderstorm-related phenomena. Take a
look at how they envision these powerful events.