NICER observation list: Target ID 664301

A groundbreaking recent study of the hard state of Cygnus X-1 with IXPE, NICER and NuSTAR provided the first robust soft X-ray polarimetric detection of an accreting black hole. The spectro-polarimetric results yielded unprecedented constraints on the jet, corona, and accretion disk geometry. This was anchored in the broadband X-ray spectral data from NICER and NuSTAR being modeled in conjunction with IXPE's polarimetric data. If Cyg X-1 transitions to its soft state, an approved 600ks IXPE campaign will be triggered. To achieve equivalent constraints on the soft state's accretion geometry as with the hard state campaign, we request an accompanying 5ks per day for 12 days with NICER, and 3 x 20ks observations with NuSTAR during the IXPE run, 60ks apiece for NICER and NuSTAR.