| dc.creator | EVGUENI LEKHT EVGUENIEVICH | |
| dc.date | 2008 | |
| dc.date.accessioned | 2023-07-25T16:22:53Z | |
| dc.date.available | 2023-07-25T16:22:53Z | |
| dc.identifier | http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/1049 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/7806249 | |
| dc.description | The results of analyzing asymmetry in the H₂O maser lines at λ = 1.35 cm are presented. We investigated in detail the known mechanism of the asymmetry origin due to the hyperfine structure of the 6₁₆ → 5₂₃ transition and different (not equidistant) positions of the corresponding triplet components. The triplet of the lines is characterized by the sum of extinction factors that are continuously transformed into a single-peaked asymmetric extinction coefficient, with the increase in the Doppler widths (characterizing by effective
Doppler velocity ud). A noticeable asymmetry corresponds to ud ≤ 0.5−1 km s¯¹. For higher values of ud the extinction factor approaches a Gaussian shape with the decreasing magnitude of the profile asymmetry. An appreciable asymmetry in unsaturated maser lines can only arise at ud ≤ 0.5 km s¯¹, if there are very narrow linewidths (Δu ≈ 0.2−0.4 km s¯¹). But observed saturated masers possess a fairly high degree of the line asymmetry, 10−40%. Most probably, this asymmetry is a result of rebroadening of the linewidth up to the value that is comparable to the width of the asymmetric extinction coefficient. | |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.publisher | Astronomy and Astrophysics | |
| dc.relation | citation:Lekht, E. E., et al., (2008). A study of the asymmetry in the H₂O maser line at λ = 1.35 cm on the base of the hyperfine structure, Astronomy and Astrophysics, Vol.492(2):475-480 | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.rights | http://creativecommons.org/licenses/by-nc-nd/4.0 | |
| dc.subject | info:eu-repo/classification/cti/1 | |
| dc.subject | info:eu-repo/classification/cti/21 | |
| dc.subject | info:eu-repo/classification/cti/21 | |
| dc.title | A study of the asymmetry in the H₂O maser line at λ = 1.35 cm on the base of the hyperfine structure | |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/acceptedVersion | |
| dc.audience | students | |
| dc.audience | researchers | |
| dc.audience | generalPublic | |
