期刊
SCIENCE
卷 325, 期 5942, 页码 848-852出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1176113
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资金
- NASA
- U.S. Department of Energy
- Commissariat a l Energie Atomique/IRFU
- CNRS/Institut National de Physique Nuclaire et de Physique des Particules (France)
- Agenzia Spaziale Italiana
- Istituto Nazionale di Fisica Nucleare (Italy)
- Ministry of Education, Culture, Sports, Science and Technology
- High Energy Accelerator Research Organization (KEK)
- Japan Aerospace Exploration Agency (Japan)
- K. A. Wallenberg Foundation
- Swedish Research Council
- National Space Board (Sweden)
- Istituto Nazionale di Astrofisica (Italy)
- Commonwealth Government
- CSIRO
- ICREA Funding Source: Custom
- STFC [ST/G002487/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/G002487/1] Funding Source: researchfish
Pulsars are born with subsecond spin periods and slow by electromagnetic braking for several tens of millions of years, when detectable radiation ceases. A second life can occur for neutron stars in binary systems. They can acquire mass and angular momentum from their companions, to be spun up to millisecond periods and begin radiating again. We searched Fermi Large Area Telescope data for pulsations from all known millisecond pulsars (MSPs) outside of globular clusters, using rotation parameters from radio telescopes. Strong gamma-ray pulsations were detected for eight MSPs. The gamma-ray pulse profiles and spectral properties resemble those of young gamma-ray pulsars. The basic emission mechanism seems to be the same for MSPs and young pulsars, with the emission originating in regions far from the neutron star surface.
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