SIMBAD references

2005ApJ...626..343B - Astrophys. J., 626, 343-349 (2005/June-2)

Measurement of spectral breaks in pulsar wind nebulae with millimeter-wave interferometry.


Abstract (from CDS):

We have observed pulsar wind nebulae (PWNe) in the three supernova remnants G11.2-0.3, G16.7+0.1, and G29.7-0.3 at 89 GHz with the Berkeley-Illinois-Maryland Association array, measuring total flux densities of two of them for comparison with archival data at other frequencies. In G16.7+0.1, we find a break in the spectrum of the PWN at ∼26 GHz. In G29.7-0.3, our data suggest a break in the integrated spectrum of the central nebula at ∼55 GHz, lower than previously estimated. However, we have found spatial structure in the spectrum of this nebula. The emission to the north of pulsar J1846-0258 has a broken spectrum with break frequency ≲100 GHz, consistent with a conventional pulsar-powered nebula. The emission to the south of the pulsar has a nearly power-law spectrum from radio to X-rays: this component may be unrelated to the PWN, or it may be evidence of asymmetries and/or time evolution in the pulsar's energy output. We present 89 GHz images of each remnant.

Abstract Copyright:

Journal keyword(s): Stars: Pulsars: Individual: Alphanumeric: PSR J1846-0258 - Radio Continuum: ISM - Stars: Supernovae: Individual: Alphanumeric: G11.2-0.3 - Stars: Supernovae: Individual: Alphanumeric: G16.7+0.1 - Stars: Supernovae: Individual: Alphanumeric: G29.7-0.3 - ISM: Supernova Remnants

Simbad objects: 13

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