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| Natura: | Artículo científico |
| Lingua: | en |
| Pubblicazione: |
Universidad Nacional Autónoma de México
2014
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| Accesso online: | https://www.redalyc.org/articulo.oa?id=57131044011 |
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Sommario:
- KINEMATIC MODEL FOR ASYMMETRY: PROJECTED HOTSPOT/LOBE ADVANCE SPEED C. C. Onuchukwu A. A. Ubachukwu F. C. Odo Física, Astronomía y Matemáticas Galaxies data analysis namics — methods active — galaxies kinematics and dy We present a kinematic model for asymmetries in radio sources, which enabled an estimation of the projected hotspot/lobe advance speed for high-luminosity radio sources using the arm-length ratio (Q) and apparent flux ratio (R). We obtain a mean projected speed along the line of sight β = 0.15 ± 0.05 for all the sources in our sample, using the Q parameter and β ∼ 0.12 − 0.32 for ρ = 2α + 1 (where ρ is the electron energy spectrum index) using the R parameter. Our results indicate that the adopted model of brightness evolution of plasma element affects the values of projected speed. Regression analyses indicate that the estimated speeds using the Q and R parameters show some correlation with distance (L) and luminosity (P ), especially for quasars. 2014 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57131044011 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.1 Vol.50