A long-period globular-cluster pulsar in an eclipsing binary system
Article Abstract:
Pulsar PSR1718-19 is an exception to the rule that pulsar members of eclipsing binary systems found in globular clusters rotate rapidly. It exhibits the relatively long period of 1 s, has a strong magnetic field and small spin-down age. Observations of the eclipses show that a cloud of material surrounds the binary system. This cloud was probably ejected from the companion, and this may have been caused by the pulsar's radiation. This shows that pulsars may have a greater influence on their binary companions than previously believed.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
User Contributions:
Comment about this article or add new information about this topic:
Pulsed X-rays from the Vela pulsar
Article Abstract:
The Rosat satellite has confirmed that the Vela pulsar, PSR0833-45, is a neutron star whose emissions of pulsed radiation include X-rays as well as the previously detected radio waves, optical light and gamma-rays. Rosat's data, collected in two sets in Apr and Dec 1991, also demonstrate the comparative softness of the pulsar's X-ray emissions. This soft radiation is similar to what 100,000-year-old pulsars produce, although PSR0833-45 itself is only about 10,000 years old.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
User Contributions:
Comment about this article or add new information about this topic:
X-rays from the eclipsing pulsar 1957+20
Article Abstract:
The eclipsing pulsar PSR1957+20 is emitting soft X-rays of about 1 keV energy. This X-ray wind is apparently created as the pulsar eclipses a low-mass companion star. However, the details of this process remain mysterious. Three sources for the X-rays have been proposed: the interstellar nebula, the pulsar's interaction with its companion star and the pulsar itself. The small size of the X-ray producer indicates that the X-rays are generated within the binary system.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Correlates of population recovery goals in endangered birds. Using population viability analysis to develop recovery criteria for endangered insects: case study of the Fender's blue butterfly
- Abstracts: Dads and disomy and disease. Uniparental paternal disomy in a genetic cancer-predisposing syndrome
- Abstracts: Unequal competition between three-spined stickleback, Gasterosteus aculeatus, L., encountering sequential prey
- Abstracts: Cash limits curb Max Planck Society's plans in the east. Max Planck expands toward the east. Max Planck supports research in east as cost of reunification climbs
- Abstracts: Sire x herd interactions for weaning weight in beef cattle. Stocker systems. Cow-calf production