2000A&A...359.1107A


Query : 2000A&A...359.1107A

2000A&A...359.1107A - Astronomy and Astrophysics, volume 359, 1107-1110 (2000/7-3)

Inhomogeneous models for plerions: the surface brightness profile of the Crab Nebula.

AMATO E., SALVATI M., BANDIERA R., PACINI F. and WOLTJER L.

Abstract (from CDS):

We extend the homogeneous model for the synchrotron emission from plerions to allow more realistic predictions of the surface brightness distribution at different frequencies. Abandoning the assumption of a uniform particle distribution, we assume that particles are injected into the synchrotron nebula only in the vicinity of the pulsar. Their distribution is then determined by MHD propagation in a magnetic field of spatially constant but time-dependent intensity. This highly simplified model reproduces the integrated spectrum and the synchrotron surface brightness profile of the Crab Nebula at radio frequencies. However, when applied to higher frequencies, it underestimates the extension of the emitting region, suggesting that particle diffusion with respect to the magnetic field lines must occur.

Abstract Copyright:

Journal keyword(s): ISM: supernova remnants - ISM: individual objects: Crab Nebula - radiation mechanisms: non-thermal

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 SNR G130.7+03.1 SNR 02 05 37.0 +64 49 42           ~ 589 4
2 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5028 0
3 M 1 SNR 05 34 32 +22 00.8           ~ 5904 1
4 SNR G011.2-00.3 SNR 18 11 28.9 -19 25 29           ~ 270 1

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2022.05.27-14:04:00

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