2008A&A...483...13K


C.D.S. - SIMBAD4 rel 1.7 - 2020.05.26CEST13:14:51

2008A&A...483...13K - Astronomy and Astrophysics, volume 483, 13-14 (2008/5-3)

Correlation of the scattering and dispersion events in the Crab Nebula pulsar.

KUZMIN A., LOSOVSKY B.Ya., JORDAN C.A. and SMITH F.G.

Abstract (from CDS):

In separate series of observations of the Crab pulsar, pulse broadening due to scattering was measured at 111MHz, and variations of dispersion due to pulse delay were measured at higher radio frequencies. In a remarkable event lasting 200-days a large increase occurred in both parameters and with similar time signatures. The increases in scattering and dispersion measure observed over the 200-days MJD 53950-54150 are attributable to the effects of an ionised cloud or filament crossing the line of sight. The cloud would be 1011-1012m across, with electron density 103-104cm–3. The increased scattering might originate within the cloud itself, or the moving filament might induce turbulence in a separate higher density cloud in the line of sight.

Abstract Copyright:

Journal keyword(s): pulsars: general - pulsars: individual: Crab - ISM: supernova remnants

Status at CDS:  

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* CM Tau Psr 05 34 31.93830 +22 00 52.1758           ~ 4782 1
2 M 1 SNR 05 34 31.94 +22 00 52.2           ~ 5573 4

    Equat.    Gal    SGal    Ecl

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2020.05.26-13:14:51

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