Supernova Remnants in the Large Magellanic Clouds IX: Multiwavelength Analysis of the Physical Structure of N49

Details Supernova Remnants in the Large Magellanic Clouds IX: Multiwavelength Analysis of the Physical Structure of N49 Supernova Remnants in the Large Magellanic Clouds IX: Multiwavelength Analysis of the Physical Structure of N49

2007-08-10

arxiv.org/abs/0708.1515v1

Astron.J.134:2308-2317,2007

Astronomy and Astrophysics

Astrophysics

25 pages, 9 figures, accepted by the Astronomical Journal, November 2007 Issue

Scientific paper

10.1086/522302

We present a multiwavelength analysis of the supernova remnant N49 in the Large Magellanic Cloud. Using high-resolution Hubble Space Telescope WFPC2 images of H-alpha, [S II] and [O III] emission, we study the morphology of the remnant and calculate the rms electron densities in different regions. We detect an offset of [O III] and H-alpha emission of about 0.5 arcsec, and discuss possible scenarios that could give rise to such high values. The kinematics of the remnant is analyzed by matching individual filaments to the echelle spectra obtained at CTIO. We detect narrow H-alpha emission component which we identify as the diffuse post-shock recombination radiation, and discrete broad emission features that correspond to the shocked gas in filaments. The overall expansion of the remnant is about 250 km/s. The dense clouds are shocked up to line-of-sight velocities of 250 km/s and the less dense gas up to 300 km/s. A few cloudlets have even higher radial velocities, reaching up to 350 km/s. We confirm the presence of the cavity in the remnant, and identify the center of explosion. Using archival Chandra and XMM-Newton data, we observe the same trends in surface brightness distribution for the optical and X-ray images. We carry out the spectral analysis of three regions that represent the most significant optical features.

Affiliated with

Also associated with

No associations

Rating

Supernova Remnants in the Large Magellanic Clouds IX: Multiwavelength Analysis of the Physical Structure of N49 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 Supernova Remnants in the Large Magellanic Clouds IX: Multiwavelength Analysis of the Physical Structure of N49, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Supernova Remnants in the Large Magellanic Clouds IX: Multiwavelength Analysis of the Physical Structure of N49 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-213358