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Phase-Resolved Spectroscopy of Geminga Shows Rotating Hot Spot(s)
- Source :
- Science. 305:376-379
- Publication Year :
- 2004
- Publisher :
- American Association for the Advancement of Science (AAAS), 2004.
-
Abstract
- Isolated neutron stars are seen in x-rays through their nonthermal and/or surface thermal emissions. XMM-Newton observations of the Geminga pulsar show a 43 electron volt spectrum from the whole neutron star surface, as well as a power-law component above 2 kiloelectron volts. In addition, we have detected a hot (170 electron volts) thermal emission from an 60-meter-radius spot on the pulsar s surface. Such a thermal emission, only visible at selected phase intervals, may be coming from polar hot spot(s), long thought to exist as a result of heating from magnetospheric accelerated particles. It may provide the missing link between the x-ray and gamma-ray emission of the pulsar.<br />Comment: Published in Science, 16 July 2004
- Subjects :
- Physics
Multidisciplinary
Astrophysics::High Energy Astrophysical Phenomena
Astrophysics (astro-ph)
Electronvolt
FOS: Physical sciences
Astronomy
Hot spot (veterinary medicine)
Astrophysics::Cosmology and Extragalactic Astrophysics
Astrophysics
Particle acceleration
Neutron star
Pulsar
Thermal radiation
Thermal
Spectroscopy
Astrophysics::Galaxy Astrophysics
Subjects
Details
- ISSN :
- 10959203 and 00368075
- Volume :
- 305
- Database :
- OpenAIRE
- Journal :
- Science
- Accession number :
- edsair.doi.dedup.....01751b9367b50741c56a17ea100d27bc