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astro-ph.HE2023★ 1 cited

IXPE observation confirms a high spin in the accreting black hole 4U 1957+115

L. Marra, M. Brigitte, N. Rodriguez Cavero +113

We present the results of the first X-ray polarimetric observation of the low-mass X-ray binary 4U 1957+115, performed with the Imaging X-ray Polarimetry Explorer in May 2023. The…