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Grain destruction in a supernova remnant shock wave
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Sankrit, Ravi Gaetz, Terrance J. Ghavamian, Parviz Borkowski, Kazimierz J. Raymond, John C. Blair, William P. Williams, Brian J. |
| Copyright Year | 2014 |
| Description | Dust grains are sputtered away in the hot gas behind shock fronts in supernova remnants, gradually enriching the gas phase with refractory elements. We have measured emission in C IV (lambda)1550 from C atoms sputtered from dust in the gas behind a non-radiative shock wave in the northern Cygnus Loop. Overall, the intensity observed behind the shock agrees approximately with predictions from model calculations that match the Spitzer 24 micron and the X-ray intensity profiles. Thus these observations confirm the overall picture of dust destruction in SNR shocks and the sputtering rates used in models. However, there is a discrepancy in that the CIV intensity 10'' behind the shock is too high compared to the intensities at the shock and 25'' behind it. Variations in the density, hydrogen neutral fraction and the dust properties over parsec scales in the pre- shock medium limit our ability to test dust destruction models in detail. |
| File Size | 408900 |
| Page Count | 36 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20140013351 |
| Archival Resource Key | ark:/13960/t10p62h18 |
| Language | English |
| Publisher Date | 2014-01-01 |
| Access Restriction | Open |
| Subject Keyword | Dust Cygnus Loop Supernova Remnants Cygnus Constellation Enrichment Shock Waves X Rays Hydrogen Vapor Phases Shock Fronts High Temperature Gases Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
