1999/04/05 by Sisir Roy, Menas Kafatos, Roy, Sisir +4
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #FOS: Physical sciences #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9904061
Accepted, Astronomy & Astrophysics, 14 pages, no figures
openalex publication_date 1999/04/05 · arxiv created 1999/11/12 · arxiv updated 2009/12/01 · openalex created_date 2022/09/11 · openalex updated_date 2026/07/28
The frequency shift of spectral lines from astronomical objects is most often\nexplained by the Doppler Effect arising in relative motion and the broadening\nof a particular line is supposed to depend on the absolute temperature,\npressure or the different line of sight velocities. The Wolf effect on the\nother hand deals with correlation induced spectral changes and explains both\nthe broadening and shift of the spectral lines. In this framework a sufficient\ncondition for redshift has been derived and when applicable the shift is shown\nto be larger than broadening. Under this condition of larger shift than\nbroadening we find a critical source frequency below which no spectrum is\nanalyzable for a particular medium. This gives rise to new type of screening\neffect which may play significant role both at laboratory scale as well as in\nthe astronomical domain. We apply a simple interpretation of the discordant\nredshifts in galaxy-quasar associations.\n