Physics
Scientific paper
Oct 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988natur.335..801k&link_type=abstract
Nature (ISSN 0028-0836), vol. 335, Oct. 27, 1988, p. 801-803. Research supported by the Alfred P. Sloan Foundation and Californi
Physics
95
Eclipsing Binary Stars, Emission Spectra, H Alpha Line, Nebulae, Pulsars, Abundance, Atomic Excitations, Balmer Series, Luminosity, Lyman Spectra, Stellar Mass Accretion
Scientific paper
The discovery of a H-alpha emission nebula around PSR1957+20, the first nebula to be found around a 'recycled', and thus ancient, pulsar, is reported. It is suggested that the H-alpha emission arises in shocks driven into the ISM by a relativistic wind from the pulsar. The nebular spectrum shows similarities to fast shocks in young supernova remnants like Tycho; the absence of the usual optical forbidden lines is explained by models of the excitation of neutral atoms drifting into the postshock region, but the large observed Balmer decrement is more mysterious. Between 1 percent and 10 percent of the rotational luminosity is absorbed in the region outlined by the H-alpha emission, with the bulk of the relativistic wind flowing away from the pulsar.
Hester Jeff J.
Kulkarni Shrinivas R.
No associations
LandOfFree
Discovery of a nebula around PSR1957+20 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Discovery of a nebula around PSR1957+20, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discovery of a nebula around PSR1957+20 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1599904