6533b858fe1ef96bd12b6be8
RESEARCH PRODUCT
X-ray emission from the Vela SNR shock region: Spectral fitting with a non-equilibrium ionization model
S. SciortinoFabrizio BocchinoA. Maggiosubject
Shock waveThermal equilibriumPhysicsAstrophysics::High Energy Astrophysical Phenomenachemistry.chemical_elementAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysicsVelaNeonchemistryIonizationROSATElectron temperatureAstrophysics::Galaxy AstrophysicsBlast wavedescription
We report on the 5′ 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 significant variations of temperature, density, ionization time and interstellar absorption. We have identified an overdense region with higher density and lower temperature than the surrounding medium. That can be interpreted as an ISM cloudlet recently shocked by the blast wave, not yet in thermal equilibrium. Our independent determination of the Vela SNR distance is in agreement with the most recent results based on ROSAT All‐Sky Survey data. Our analysis indicates the occurrence of fast electron‐ion energy equipartition behind the shock.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1994-01-01 | AIP Conference Proceedings |