Low-frequency carbon radio recombination lines. II. The diffuse interstellar medium
In the second paper of the series, we have modeled low-frequency carbon radio recombination lines (CRRLs) from the interstellar medium. Anticipating the Low Frequency Array survey of Galactic CRRLs, we focus our study on the physical conditions of the diffuse, cold neutral medium. We have used the i...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
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Institute of Physics
2017
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| _version_ | 1826291975595229184 |
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| author | Salgado, F Morabito, L Oonk, J Salas, P Toribio, M Röttgering, H Tielens, A |
| author_facet | Salgado, F Morabito, L Oonk, J Salas, P Toribio, M Röttgering, H Tielens, A |
| author_sort | Salgado, F |
| collection | OXFORD |
| description | In the second paper of the series, we have modeled low-frequency carbon radio recombination lines (CRRLs) from the interstellar medium. Anticipating the Low Frequency Array survey of Galactic CRRLs, we focus our study on the physical conditions of the diffuse, cold neutral medium. We have used the improved departure coefficients computed in the first paper of the series to calculate line-to-continuum ratios. The results show that the line width and integrated optical depths of CRRLs are sensitive probes of the electron density, gas temperature, and emission measure of the cloud. Furthermore, the ratio of CRRL to the [C II] at the 158 μm line is a strong function of the temperature and density of diffuse clouds. Guided by our calculations, we analyze CRRL observations and illustrate their use with data from the literature. |
| first_indexed | 2024-03-07T03:07:35Z |
| format | Journal article |
| id | oxford-uuid:b3136153-0f98-48fa-bcd2-1a65f28212d8 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T03:07:35Z |
| publishDate | 2017 |
| publisher | Institute of Physics |
| record_format | dspace |
| spelling | oxford-uuid:b3136153-0f98-48fa-bcd2-1a65f28212d82022-03-27T04:16:25ZLow-frequency carbon radio recombination lines. II. The diffuse interstellar mediumJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:b3136153-0f98-48fa-bcd2-1a65f28212d8Symplectic Elements at OxfordInstitute of Physics2017Salgado, FMorabito, LOonk, JSalas, PToribio, MRöttgering, HTielens, AIn the second paper of the series, we have modeled low-frequency carbon radio recombination lines (CRRLs) from the interstellar medium. Anticipating the Low Frequency Array survey of Galactic CRRLs, we focus our study on the physical conditions of the diffuse, cold neutral medium. We have used the improved departure coefficients computed in the first paper of the series to calculate line-to-continuum ratios. The results show that the line width and integrated optical depths of CRRLs are sensitive probes of the electron density, gas temperature, and emission measure of the cloud. Furthermore, the ratio of CRRL to the [C II] at the 158 μm line is a strong function of the temperature and density of diffuse clouds. Guided by our calculations, we analyze CRRL observations and illustrate their use with data from the literature. |
| spellingShingle | Salgado, F Morabito, L Oonk, J Salas, P Toribio, M Röttgering, H Tielens, A Low-frequency carbon radio recombination lines. II. The diffuse interstellar medium |
| title | Low-frequency carbon radio recombination lines. II. The diffuse interstellar medium |
| title_full | Low-frequency carbon radio recombination lines. II. The diffuse interstellar medium |
| title_fullStr | Low-frequency carbon radio recombination lines. II. The diffuse interstellar medium |
| title_full_unstemmed | Low-frequency carbon radio recombination lines. II. The diffuse interstellar medium |
| title_short | Low-frequency carbon radio recombination lines. II. The diffuse interstellar medium |
| title_sort | low frequency carbon radio recombination lines ii the diffuse interstellar medium |
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