Bignami, Giovanni F. Institute for Advanced Studies, Pavia, Italy, and Italian National Institute for Astrophysics, Institute for Space Astrophysics and Cosmic Physics, Milan Section, Italy.
Last reviewed:January 2020
- Neutron stars
- Nature and radiation
- Interaction with interstellar medium
- The Fermi pulsar revolution
- Related Primary Literature
- Additional Reading
A nearby neutron star that emits pulsed x-rays and gamma rays, steady optical radiation, and possibly radio and optical pulsations. Since the 1970s, it has been studied at a level of detail very unusual for a neutron star. As a result, not only are its nature and distance well known, but also a good understanding has been reached of the physical processes responsible for its multiwavelength emission. Since 2008, NASA's Fermi Gamma-ray Space Telescope mission has unveiled a wealth of Geminga-like gamma-ray pulsars, showing that they are as abundant as the radio-selected neutron stars. Moreover, it is now clear that the vast majority of the hitherto mysterious population of unidentified gamma-ray objects (UGOs) in our galaxy consists of objects like Geminga. Thus, Geminga has been revealed to be the prototype of a new galactic population of neutron stars.
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 10,000 highly qualified scientists and 46 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information