http://arxiv.org/abs/1910.00669
We consider an observer who moves under the horizon of the Schwarzschild black hole and absorbs a photon. There are two qualitatively different situations when (i) a photon comes from infinity, (ii) it is emitted by another observer near the past (illusory) horizon. We analyze the frequency change for absorption near the event horizon and near the singularity. In general, the result depends strongly on the angular momenta of an observer and a photon. For pure radial motion, radiation inside the horizon experiences ubounded redshift in case (ii) and, moreover, near the singularity this is valid also for case (i). For nonzero momenta, it has a finite frequency or experiences the unbounded blueshift. There is scenario in which the ubounded redshift in the intermediate region inside the horizon changes to the unbounded blueshift when an observer approaches the singularity.
O. Zaslavskii
Thu, 3 Oct 19
35/59
Comments: 15 pages
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