Polarization and coherence properties of stellar radiation. #97
Replies: 2 comments 10 replies
-
Stellar radiation is slightly polarized. However, radiation emitted by matter in magnetic fields has a higher degree of polarization e.g. sun spots via Zeeman effect, cyclotron radiation via magnetic field, the CMB via "gravitational waves" (according to LCDM) or magnetic fields (according to a non-cosmological origin of the CMB). Scattering off dust particles also polarizes radiation. Longer coherence lengths are seen in specific objects like astronomical masers (methane, hydrogen, synchrotron) and Fast Radio Bursts, but other sources have a very short coherent length comparable to about a wavelength (as for any blackbody source). Reading your notes and comments in the attached paper, you are about at the stage I was when I wrote "Optical forces as a redshift mechanism: the “Spectral Transfer Redshift”" I believe you are on the right track! |
Beta Was this translation helpful? Give feedback.
-
Yes, most of the light from the sun is produced by this incoherent process and appears as a blackbody spectrum. The spectral lines listed in the |
Beta Was this translation helpful? Give feedback.
-
Hello, I opening this post for to debate the properties of stellar radiation. I interested to know if there are measurements of the coherence degree of stellar sources and if exits some as "a polarization degree". I was studying the ponderomotive effect as a possible cause of redshift. I understand this effect such as is explained in the attachment. Two cuasi-colinear beams of coherent and plane polarized light (laser) with nearing frequencies can produces a interference pattern with a certain group velocity. This velocity can be arbitrarily slow, until to reach the thermal velocity of electrons of a hipotetic intergalactic plasma. If one pattern to coincide in velocity and direction with one electron, there are certain probability of produces the energy transference from higher energetic photon to the lowest one, as is explained in the attachment. Until now, I can get a redshift in base to this phenomenon, with a "number of events of transference" independent of the wavelength and this do not like me.
I guess that this phenomenon could explain the z dependent time dilation.
But, the question that I want to dilucide is if the stellar radiation could produce this patterns, still in a randomic way. I understand that it is necessary a certain degree of polarization and coherence.
Astronomical redshift from ponderomotive effect.docx (1).pdf
kozak2018.pdf
Beta Was this translation helpful? Give feedback.
All reactions