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http://hdl.handle.net/2248/2654| Title: | Aberration and advection effects in expanding spherically symmetric shells |
| Authors: | Peraiah, A |
| Keywords: | Advection Optical thickness Radiative transfer Stellar envelopes Supernovae Aberration Coherent scattering Computational astrophysics Spherical shells |
| Issue Date: | Apr-1991 |
| Publisher: | American Astronomical Society |
| Citation: | Astrophysical Journal, Part 1 , Vol. 371, No.2, pp. 673 - 683 |
| Abstract: | The extreme outer layers of supernovae, novae, AGN, QSOs, and many supergiant stars are known to be in rapid expansion or contraction. In this paper, aberration and advection effects in a spherical medium scattering radiation isotropically and coherently are investigated. The shells are assumed to be moving radially with velocities of 1000, 2000, 3000, 4000, and 5000 km/s. A solution of the radiative transfer equation is presented. The changes in mean intensities are dependent on the geometrical and optical thickness and in particular depend on the ratio T/(B/A), where T is the maximum optical depth and B and A are the outer and inner radii of the spherical shell, respectively. |
| URI: | http://hdl.handle.net/2248/2654 |
| ISSN: | 0004-637X |
| Appears in Collections: | IIAP Publications |
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