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gr-qc2026
Existence of Halos Outside Schwarzschild- Black Holes
Wen-Xiang Chen
We investigate the possibility of photon halos (stable photon orbits) forming outside Schwarzschild- black holes by analyzing null geodesics in these spacetimes. Using method…
gr-qc2026
Comment on "Superradiant stability of the Kerr black holes" (arXiv:1907.09118)
Wen-Xiang Chen
We revisit the recent work of Huang on the superradiant stability of Kerr black holes coupled to massive scalar fields. While their analysis provides sufficient conditions for stab…