Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2008-12-31
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
Accepted for publication in The Astrophysical Journal Letters
Scientific paper
10.1088/0004-637X/692/2/L105
We report on the first X-ray proper-motion measurements of the nonthermally-dominated forward shock in the northeastern limb of SN 1006, based on two Chandra observations taken in 2000 and 2008. We find that the proper motion of the forward shock is about 0.48 arcsec/yr and does not vary around the rim within the ~10% measurement uncertainties. The proper motion measured is consistent with that determined by the previous radio observations. The mean expansion index of the forward shock is calculated to be ~0.54 which matches the value expected based on an evolutionary model of a Type Ia supernova with either a power-law or an exponential ejecta density profile. Assuming pressure equilibrium around the periphery from the thermally-dominated northwestern rim to the nonthermally-dominated northeastern rim, we estimate the ambient density to the northeast of SN 1006 to be about 0.085/cm^3.
Katsuda Satoru
Long Knox S.
Mori Koji
Petre Robert
Reynolds Stephen P.
No associations
LandOfFree
The First X-Ray Proper-Motion Measurements of the Forward Shock in the Northeastern Limb of SN 1006 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 The First X-Ray Proper-Motion Measurements of the Forward Shock in the Northeastern Limb of SN 1006, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The First X-Ray Proper-Motion Measurements of the Forward Shock in the Northeastern Limb of SN 1006 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-396653