Fine Structures of Shock of SN 1006 with the Chandra Observation

Details Fine Structures of Shock of SN 1006 with the Chandra Observation Fine Structures of Shock of SN 1006 with the Chandra Observation

2003-02-10

arxiv.org/abs/astro-ph/0302174v1

Astrophys.J. 589 (2003) 827

Astronomy and Astrophysics

Astrophysics

24 pages, 11 figures, Accepted for publication in ApJ, the paper with full resolution images in http://www-cr.scphys.kyoto-u

Scientific paper

10.1086/374687

The north east shell of SN 1006 is the most probable acceleration site of high energy electrons (up to ~ 100 TeV) with the Fermi acceleration mechanism at the shock front. We resolved non-thermal filaments from thermal emission in the shell with the excellent spatial resolution of Chandra. The thermal component is extended widely over about ~ 100 arcsec (about 1 pc at 1.8 kpc distance) in width, consistent with the shock width derived from the Sedov solution. The spectrum is fitted with a thin thermal plasma of kT = 0.24 keV in non-equilibrium ionization (NEI), typical for a young SNR. The non-thermal filaments are likely thin sheets with the scale widths of ~ 4 arcsec (0.04 pc) and ~ 20 arcsec (0.2 pc) at upstream and downstream, respectively. The spectra of the filaments are fitted with a power-law function of index 2.1--2.3, with no significant variation from position to position. In a standard diffusive shock acceleration (DSA) model, the extremely small scale length in upstream requires the magnetic field nearly perpendicular to the shock normal. The injection efficiency (eta) from thermal to non-thermal electrons around the shock front is estimated to be ~ 1e-3 under the assumption that the magnetic field in upstream is 10 micro G. In the filaments, the energy densities of the magnetic field and non-thermal electrons are similar to each other, and both are slightly smaller than that of thermal electrons. in the same order for each other. These results suggest that the acceleration occur in more compact region with larger efficiency than previous studies.

Affiliated with

Also associated with

No associations

Rating

Fine Structures of Shock of SN 1006 with the Chandra Observation 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 Fine Structures of Shock of SN 1006 with the Chandra Observation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fine Structures of Shock of SN 1006 with the Chandra Observation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-72818