Galactic Wind: Mass Fractionation and Cosmic Ray Acceleration
Abstract The dynamical and chemical effects of the Galactic Wind are discussed. This wind is primarily driven by the pressure gradient of the Cosmic Rays. Assuming the latter to be accelerated in the Supernova Remnants of the disk which at the same time produce the Hot Interstellar Medium, it is arg...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Völk, H. J. [verfasserIn] |
|---|
| Format: |
Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
2007 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer Science+Business Media, Inc. 2007 |
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| Übergeordnetes Werk: |
Enthalten in: Space science reviews - Springer Netherlands, 1962, 130(2007), 1-4 vom: 11. Mai, Seite 431-438 |
|---|---|
| Übergeordnetes Werk: |
volume:130 ; year:2007 ; number:1-4 ; day:11 ; month:05 ; pages:431-438 |
| Links: |
|---|
| DOI / URN: |
10.1007/s11214-007-9182-6 |
|---|
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OLC203369254X |
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| 520 | |a Abstract The dynamical and chemical effects of the Galactic Wind are discussed. This wind is primarily driven by the pressure gradient of the Cosmic Rays. Assuming the latter to be accelerated in the Supernova Remnants of the disk which at the same time produce the Hot Interstellar Medium, it is argued that the gas removed by the wind is enriched in the nucleosynthesis products of Supernova explosions. Therefore the moderate mass loss through this wind should still be able to remove a substantial amount of metals, opening the way for stars to produce more metals than observed in the disk, by e.g. assuming a Salpeter-type stellar initial mass function beyond a few Solar masses. The wind also allows a global, physically appealing interpretation of Cosmic Ray propagation and escape from the Galaxy. In addition the spiral structure of the disk induces periodic pressure waves in the expanding wind that become a sawtooth shock wave train at large distances which can re-accelerate “knee” particles coming from the disk sources. This new Galactic Cosmic Ray component can reach energies of a few×$ 10^{18} $ eV and may contribute to the juncture between the particles of Galactic and extragalactic origin in the observed overall Cosmic Ray spectrum. | ||
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10.1007/s11214-007-9182-6 doi (DE-627)OLC203369254X (DE-He213)s11214-007-9182-6-p DE-627 ger DE-627 rakwb eng 600 VZ 16,12 ssgn Völk, H. J. verfasserin aut Galactic Wind: Mass Fractionation and Cosmic Ray Acceleration 2007 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, Inc. 2007 Abstract The dynamical and chemical effects of the Galactic Wind are discussed. This wind is primarily driven by the pressure gradient of the Cosmic Rays. Assuming the latter to be accelerated in the Supernova Remnants of the disk which at the same time produce the Hot Interstellar Medium, it is argued that the gas removed by the wind is enriched in the nucleosynthesis products of Supernova explosions. Therefore the moderate mass loss through this wind should still be able to remove a substantial amount of metals, opening the way for stars to produce more metals than observed in the disk, by e.g. assuming a Salpeter-type stellar initial mass function beyond a few Solar masses. The wind also allows a global, physically appealing interpretation of Cosmic Ray propagation and escape from the Galaxy. In addition the spiral structure of the disk induces periodic pressure waves in the expanding wind that become a sawtooth shock wave train at large distances which can re-accelerate “knee” particles coming from the disk sources. This new Galactic Cosmic Ray component can reach energies of a few×$ 10^{18} $ eV and may contribute to the juncture between the particles of Galactic and extragalactic origin in the observed overall Cosmic Ray spectrum. Galaxy: wind Galaxy: chemical evolution Galaxy: cosmic ray propagation Galaxy: cosmic ray acceleration Enthalten in Space science reviews Springer Netherlands, 1962 130(2007), 1-4 vom: 11. Mai, Seite 431-438 (DE-627)129086606 (DE-600)4860-4 (DE-576)014420724 0038-6308 nnns volume:130 year:2007 number:1-4 day:11 month:05 pages:431-438 https://doi.org/10.1007/s11214-007-9182-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-AST SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-AST GBV_ILN_22 GBV_ILN_40 GBV_ILN_47 GBV_ILN_70 GBV_ILN_2279 GBV_ILN_4046 GBV_ILN_4306 GBV_ILN_4700 AR 130 2007 1-4 11 05 431-438 |
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10.1007/s11214-007-9182-6 doi (DE-627)OLC203369254X (DE-He213)s11214-007-9182-6-p DE-627 ger DE-627 rakwb eng 600 VZ 16,12 ssgn Völk, H. J. verfasserin aut Galactic Wind: Mass Fractionation and Cosmic Ray Acceleration 2007 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, Inc. 2007 Abstract The dynamical and chemical effects of the Galactic Wind are discussed. This wind is primarily driven by the pressure gradient of the Cosmic Rays. Assuming the latter to be accelerated in the Supernova Remnants of the disk which at the same time produce the Hot Interstellar Medium, it is argued that the gas removed by the wind is enriched in the nucleosynthesis products of Supernova explosions. Therefore the moderate mass loss through this wind should still be able to remove a substantial amount of metals, opening the way for stars to produce more metals than observed in the disk, by e.g. assuming a Salpeter-type stellar initial mass function beyond a few Solar masses. The wind also allows a global, physically appealing interpretation of Cosmic Ray propagation and escape from the Galaxy. In addition the spiral structure of the disk induces periodic pressure waves in the expanding wind that become a sawtooth shock wave train at large distances which can re-accelerate “knee” particles coming from the disk sources. This new Galactic Cosmic Ray component can reach energies of a few×$ 10^{18} $ eV and may contribute to the juncture between the particles of Galactic and extragalactic origin in the observed overall Cosmic Ray spectrum. Galaxy: wind Galaxy: chemical evolution Galaxy: cosmic ray propagation Galaxy: cosmic ray acceleration Enthalten in Space science reviews Springer Netherlands, 1962 130(2007), 1-4 vom: 11. Mai, Seite 431-438 (DE-627)129086606 (DE-600)4860-4 (DE-576)014420724 0038-6308 nnns volume:130 year:2007 number:1-4 day:11 month:05 pages:431-438 https://doi.org/10.1007/s11214-007-9182-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-AST SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-AST GBV_ILN_22 GBV_ILN_40 GBV_ILN_47 GBV_ILN_70 GBV_ILN_2279 GBV_ILN_4046 GBV_ILN_4306 GBV_ILN_4700 AR 130 2007 1-4 11 05 431-438 |
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10.1007/s11214-007-9182-6 doi (DE-627)OLC203369254X (DE-He213)s11214-007-9182-6-p DE-627 ger DE-627 rakwb eng 600 VZ 16,12 ssgn Völk, H. J. verfasserin aut Galactic Wind: Mass Fractionation and Cosmic Ray Acceleration 2007 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, Inc. 2007 Abstract The dynamical and chemical effects of the Galactic Wind are discussed. This wind is primarily driven by the pressure gradient of the Cosmic Rays. Assuming the latter to be accelerated in the Supernova Remnants of the disk which at the same time produce the Hot Interstellar Medium, it is argued that the gas removed by the wind is enriched in the nucleosynthesis products of Supernova explosions. Therefore the moderate mass loss through this wind should still be able to remove a substantial amount of metals, opening the way for stars to produce more metals than observed in the disk, by e.g. assuming a Salpeter-type stellar initial mass function beyond a few Solar masses. The wind also allows a global, physically appealing interpretation of Cosmic Ray propagation and escape from the Galaxy. In addition the spiral structure of the disk induces periodic pressure waves in the expanding wind that become a sawtooth shock wave train at large distances which can re-accelerate “knee” particles coming from the disk sources. This new Galactic Cosmic Ray component can reach energies of a few×$ 10^{18} $ eV and may contribute to the juncture between the particles of Galactic and extragalactic origin in the observed overall Cosmic Ray spectrum. Galaxy: wind Galaxy: chemical evolution Galaxy: cosmic ray propagation Galaxy: cosmic ray acceleration Enthalten in Space science reviews Springer Netherlands, 1962 130(2007), 1-4 vom: 11. Mai, Seite 431-438 (DE-627)129086606 (DE-600)4860-4 (DE-576)014420724 0038-6308 nnns volume:130 year:2007 number:1-4 day:11 month:05 pages:431-438 https://doi.org/10.1007/s11214-007-9182-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-AST SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-AST GBV_ILN_22 GBV_ILN_40 GBV_ILN_47 GBV_ILN_70 GBV_ILN_2279 GBV_ILN_4046 GBV_ILN_4306 GBV_ILN_4700 AR 130 2007 1-4 11 05 431-438 |
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10.1007/s11214-007-9182-6 doi (DE-627)OLC203369254X (DE-He213)s11214-007-9182-6-p DE-627 ger DE-627 rakwb eng 600 VZ 16,12 ssgn Völk, H. J. verfasserin aut Galactic Wind: Mass Fractionation and Cosmic Ray Acceleration 2007 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, Inc. 2007 Abstract The dynamical and chemical effects of the Galactic Wind are discussed. This wind is primarily driven by the pressure gradient of the Cosmic Rays. Assuming the latter to be accelerated in the Supernova Remnants of the disk which at the same time produce the Hot Interstellar Medium, it is argued that the gas removed by the wind is enriched in the nucleosynthesis products of Supernova explosions. Therefore the moderate mass loss through this wind should still be able to remove a substantial amount of metals, opening the way for stars to produce more metals than observed in the disk, by e.g. assuming a Salpeter-type stellar initial mass function beyond a few Solar masses. The wind also allows a global, physically appealing interpretation of Cosmic Ray propagation and escape from the Galaxy. In addition the spiral structure of the disk induces periodic pressure waves in the expanding wind that become a sawtooth shock wave train at large distances which can re-accelerate “knee” particles coming from the disk sources. This new Galactic Cosmic Ray component can reach energies of a few×$ 10^{18} $ eV and may contribute to the juncture between the particles of Galactic and extragalactic origin in the observed overall Cosmic Ray spectrum. Galaxy: wind Galaxy: chemical evolution Galaxy: cosmic ray propagation Galaxy: cosmic ray acceleration Enthalten in Space science reviews Springer Netherlands, 1962 130(2007), 1-4 vom: 11. Mai, Seite 431-438 (DE-627)129086606 (DE-600)4860-4 (DE-576)014420724 0038-6308 nnns volume:130 year:2007 number:1-4 day:11 month:05 pages:431-438 https://doi.org/10.1007/s11214-007-9182-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-AST SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-AST GBV_ILN_22 GBV_ILN_40 GBV_ILN_47 GBV_ILN_70 GBV_ILN_2279 GBV_ILN_4046 GBV_ILN_4306 GBV_ILN_4700 AR 130 2007 1-4 11 05 431-438 |
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Space science reviews |
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2007 |
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431 |
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Völk, H. J. |
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Völk, H. J. |
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10.1007/s11214-007-9182-6 |
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600 |
| title_sort |
galactic wind: mass fractionation and cosmic ray acceleration |
| title_auth |
Galactic Wind: Mass Fractionation and Cosmic Ray Acceleration |
| abstract |
Abstract The dynamical and chemical effects of the Galactic Wind are discussed. This wind is primarily driven by the pressure gradient of the Cosmic Rays. Assuming the latter to be accelerated in the Supernova Remnants of the disk which at the same time produce the Hot Interstellar Medium, it is argued that the gas removed by the wind is enriched in the nucleosynthesis products of Supernova explosions. Therefore the moderate mass loss through this wind should still be able to remove a substantial amount of metals, opening the way for stars to produce more metals than observed in the disk, by e.g. assuming a Salpeter-type stellar initial mass function beyond a few Solar masses. The wind also allows a global, physically appealing interpretation of Cosmic Ray propagation and escape from the Galaxy. In addition the spiral structure of the disk induces periodic pressure waves in the expanding wind that become a sawtooth shock wave train at large distances which can re-accelerate “knee” particles coming from the disk sources. This new Galactic Cosmic Ray component can reach energies of a few×$ 10^{18} $ eV and may contribute to the juncture between the particles of Galactic and extragalactic origin in the observed overall Cosmic Ray spectrum. © Springer Science+Business Media, Inc. 2007 |
| abstractGer |
Abstract The dynamical and chemical effects of the Galactic Wind are discussed. This wind is primarily driven by the pressure gradient of the Cosmic Rays. Assuming the latter to be accelerated in the Supernova Remnants of the disk which at the same time produce the Hot Interstellar Medium, it is argued that the gas removed by the wind is enriched in the nucleosynthesis products of Supernova explosions. Therefore the moderate mass loss through this wind should still be able to remove a substantial amount of metals, opening the way for stars to produce more metals than observed in the disk, by e.g. assuming a Salpeter-type stellar initial mass function beyond a few Solar masses. The wind also allows a global, physically appealing interpretation of Cosmic Ray propagation and escape from the Galaxy. In addition the spiral structure of the disk induces periodic pressure waves in the expanding wind that become a sawtooth shock wave train at large distances which can re-accelerate “knee” particles coming from the disk sources. This new Galactic Cosmic Ray component can reach energies of a few×$ 10^{18} $ eV and may contribute to the juncture between the particles of Galactic and extragalactic origin in the observed overall Cosmic Ray spectrum. © Springer Science+Business Media, Inc. 2007 |
| abstract_unstemmed |
Abstract The dynamical and chemical effects of the Galactic Wind are discussed. This wind is primarily driven by the pressure gradient of the Cosmic Rays. Assuming the latter to be accelerated in the Supernova Remnants of the disk which at the same time produce the Hot Interstellar Medium, it is argued that the gas removed by the wind is enriched in the nucleosynthesis products of Supernova explosions. Therefore the moderate mass loss through this wind should still be able to remove a substantial amount of metals, opening the way for stars to produce more metals than observed in the disk, by e.g. assuming a Salpeter-type stellar initial mass function beyond a few Solar masses. The wind also allows a global, physically appealing interpretation of Cosmic Ray propagation and escape from the Galaxy. In addition the spiral structure of the disk induces periodic pressure waves in the expanding wind that become a sawtooth shock wave train at large distances which can re-accelerate “knee” particles coming from the disk sources. This new Galactic Cosmic Ray component can reach energies of a few×$ 10^{18} $ eV and may contribute to the juncture between the particles of Galactic and extragalactic origin in the observed overall Cosmic Ray spectrum. © Springer Science+Business Media, Inc. 2007 |
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| title_short |
Galactic Wind: Mass Fractionation and Cosmic Ray Acceleration |
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