منابع مشابه
Shock-cloud interaction in the Vela SNR II. Hydrodynamic model
Context. In the framework of the study of the X-ray and optical emission in supernova remnants we focus on an isolated X-ray knot in the northern rim of the Vela SNR (Vela FilD), whose X-ray emission has been studied and discussed in Paper I. Aims. We aim at understanding the physical origin of the X-ray and optical emission in FilD, at understanding the role of the different physical processes...
متن کاملShock - cloud interaction in the Vela SNR observed with XMM - Newton
We analyzed an XMM-Newton EPIC observation of a bright knot, named FilD, in the northern rim of the Vela SNR, where the shock has encountered a cloud. The good combination of sensitivity, spectral, and spatial resolution allowed us to describe the internal structure of the observed ISM clouds and to obtain estimates of their temperature, density, O, Ne, and Fe abundances, and of their extension...
متن کاملShock-cloud Interaction in the Vela Snr: Preliminary Results of an Xmm-newton Observation
The study of the clumpy and irregular features in the X-ray emission of middle-aged supernova remnants shells allows us to shed light on the various characteristic of the interstellar medium, like its structure and composition. We have observed with XMM-Newton a small knot in the Vela SNR, which previous ROSAT studies have indicated as one of the best examples of an interaction between the SNR ...
متن کاملMulti-wavelength observations and modelling of shock-cloud interaction regions in the Vela Supernova Remnant
We present optical photometric and spectrophotometric observations of two selected filaments near the North rim of the Vela supernova remnant also observed in UV with the International Ultraviolet Explorer, and in X-rays with the ROSAT PSPC detector. From the optical data, we have derived spatially-resolved (∼ 3′′) profiles of several emission lines across the filaments, which allowed us to res...
متن کاملX-ray Emission from the Vela Snr Shock Region: Spectral Fitting with a Non-equilibrium Ionization Model
We report on the 5 0 scale spectral analysis of the X-ray emission from a region near the edge of the Vela SNR with a Non-Equilibrium Ionization (NEI) model. We have found signiicant variations of temperature, density, ionization time and interstel-lar absorption. We have identiied an overdense region with higher density and lower temperature than the surrounding medium. That can be interpreted...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2006
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20065738