NICER observation list: Target ID 670301

Abstract

We propose monitoring two future, previously unobserved BH transients with fluxes above 50 mCrab by dedicating 45 ks of NICER time over 15 observations spread throughout each of the two outbursts. By pairing a 30 ks NuSTAR observation with a NICER observation, we can obtain a precise spin measurement for each BH. The NICER monitoring campaign will probe the effects of the evolution of the outburst on the spin measurement. This project will test the assumptions and hypotheses of BH spin measurements in X-ray binaries, and will serve as a legacy for NICER and NuSTAR. In the future, this treatment will maximize the number of new BHs observed and, together with gravitational wave observations, will allow developing a unifying understanding of stellar-mass black hole formation and evolution.
Obsid RA DEC l b Start End Exposure Number of
Modules		 Number of
Processing		 Status of
Processing		 Date of
Processing		 Public
date
6703010101 261.931 -16.206 8.642 10.254 60185.5447 60185.7523 3376.3 49 3 VALIDATED 60199.6 60199
6703010102 261.931 -16.206 8.641 10.254 60188.5766 60188.7188 3749.0 17 3 VALIDATED 60203.1 60202
6703010103 261.931 -16.206 8.641 10.254 60191.3512 60191.4862 2803.0 17 2 VALIDATED 60203.7 60205
6703010104 261.931 -16.205 8.642 10.255 60194.7053 60194.7157 753.0 17 2 VALIDATED 60206.5 60208
6703010105 261.930 -16.205 8.642 10.255 60198.8882 60198.9579 0.0 17 3 VALIDATED 60209.0 60212
6703010106 261.930 -16.205 8.642 10.255 60199.0172 60199.3456 808.0 17 4 VALIDATED 60211.1 60213
6703010107 261.930 -16.205 8.642 10.255 60202.2691 60202.9845 4529.2 14 4 VALIDATED 60214.9 60216
6703010108 261.930 -16.205 8.642 10.255 60203.0196 60203.0929 103.0 14 4 VALIDATED 60215.1 60217
6703010109 261.930 -16.205 8.642 10.255 60205.0858 60205.2289 0.0 14 4 VALIDATED 60217.1 60219
6703010110 261.930 -16.205 8.642 10.255 60208.1210 60208.3238 0.0 10 4 VALIDATED 60219.2 60222
6703010111 261.930 -16.205 8.642 10.255 60210.2527 60210.4507 0.0 10 4 VALIDATED 60220.8 60224
6703010112 261.930 -16.205 8.642 10.255 60211.5454 60211.6824 1.1 7 5 VALIDATED 60222.5 60225
6703010113 261.931 -16.205 8.642 10.255 60220.2812 60220.9951 3504.0 17 4 VALIDATED 60233.1 60234
6703010114 261.932 -16.207 8.641 10.253 60221.0539 60221.1241 85.0 51 3 VALIDATED 60233.3 60235
6703010115 261.932 -16.207 8.641 10.253 60222.2160 60222.8646 1286.0 17 4 VALIDATED 60234.9 60236
6703010116 261.931 -16.205 8.642 10.255 60225.1861 60225.7086 3148.0 17 5 VALIDATED 60236.7 60239
6703010117 261.931 -16.205 8.642 10.255 60336.8644 60336.8685 166.0 50 5 VALIDATED 60352.1 60350
6703010118 261.932 -16.205 8.642 10.254 60337.3812 60337.9655 1084.0 50 4 VALIDATED 60352.2 60351
6703010119 261.931 -16.205 8.642 10.255 60338.0278 60338.9981 1201.0 50 4 VALIDATED 60352.2 60352