NICER observation list: Target ID 261401

Abstract

X-ray Isolated Neutron Stars are nearby, thermally emitting objects. Their X-ray spectra have been considered to be reproduced simply by a single-temperature blackbody model.We found that all the XINSs exhibit another higher temerature blackbody emission at faint high-energy end. In the case of the brightest one, RX J1856.5-3754 (J1856), the emission radius is about 100 m, suggesting the emission region will be polar cap on its surface. If so, the high temperature emission should be responsible to pulsation. This suggestion allows us to derive mass-radius ratio of the star using the light-bending effect, analysing the energy resolved light curve. However, current available data do not have enough statistics. We thus need deep observation with NICER, although short pointings have been done.
Obsid RA DEC l b Start End Exposure Number of modules Status of Processing Date of Processing Public date
2614010101 284.154 -37.909 358.60116 -17.21898 58572.8627 58572.8738 735.00000 52 VALIDATED 58576.9 58586
2614010102 284.154 -37.909 358.60134 -17.21908 58573.1106 58573.6428 6027.00000 52 VALIDATED 58578.5 58587
2614010103 284.154 -37.909 358.60125 -17.21937 58574.2699 58574.9995 9325.00000 52 VALIDATED 58580.0 58588
2614010104 284.154 -37.909 358.60135 -17.21916 58575.0553 58575.9657 5758.00000 52 VALIDATED 58580.0 58589
2614010105 284.154 -37.909 358.60091 -17.21907 58576.0641 58576.9965 5427.00000 52 VALIDATED 58580.6 58590
2614010106 284.154 -37.909 358.60175 -17.21892 58577.0484 58577.6942 897.39194 52 VALIDATED 58582.7 58591
2614010107 284.154 -37.910 358.60056 -17.21895 58578.0819 58578.8002 10883.00000 52 VALIDATED 58582.8 58592
2614010108 284.154 -37.910 358.60074 -17.21930 58579.0257 58579.9597 16429.00000 52 VALIDATED 58585.9 58593
2614010109 284.154 -37.909 358.60115 -17.21940 58580.0095 58580.9716 13177.00000 52 VALIDATED 58585.9 58594
2614010110 284.155 -37.910 358.60098 -17.22014 58581.0912 58581.3679 2111.00000 52 VALIDATED 58586.0 58595
2614010111 284.154 -37.909 358.60126 -17.21928 58581.9887 58582.9701 5450.00000 52 VALIDATED 58587.7 58596
2614010112 284.155 -37.909 358.60163 -17.21948 58583.0259 58583.7600 4409.00000 52 VALIDATED 58587.8 58597
2614010113 284.154 -37.909 358.60159 -17.21924 58584.1181 58584.5806 5100.00000 52 VALIDATED 58589.6 58598
2614010114 284.155 -37.909 358.60150 -17.21961 58586.5062 58586.6395 629.00000 52 VALIDATED 58591.7 58600
2614010115 284.154 -37.909 358.60174 -17.21910 58587.5377 58587.6713 1668.00000 52 VALIDATED 58602.8 58601
2614010116 284.154 -37.909 358.60177 -17.21917 58589.7183 58589.7963 1204.00000 52 VALIDATED 58595.8 58603
2614010117 284.154 -37.907 358.60332 -17.21851 58592.4222 58592.5019 1709.00000 52 VALIDATED 58596.8 58606
2614010118 284.152 -37.907 358.60319 -17.21669 58594.1017 58594.7690 2507.00000 52 VALIDATED 58602.8 58608
2614010119 284.154 -37.909 358.60146 -17.21870 58595.0109 58595.4771 8019.00000 52 VALIDATED 58991.9 58609
2614010120 284.154 -37.909 358.60148 -17.21852 58600.1111 58600.9520 2125.00000 52 VALIDATED 58603.7 58614
2614010121 284.154 -37.909 358.60156 -17.21849 58601.0773 58601.9715 2594.00000 52 VALIDATED 58604.6 58615
2614010122 284.154 -37.909 358.60140 -17.21855 58602.0299 58602.2945 1365.00000 52 VALIDATED 58605.6 58616
2614010123 284.149 -37.907 358.60139 -17.21465 58608.4593 58608.4648 95.00000 52 VALIDATED 58611.7 58622
2614010124 284.154 -37.910 358.60069 -17.21949 58615.6444 58615.9723 0.00000 52 VALIDATED 58618.7 58629
2614010125 284.155 -37.910 358.60107 -17.21994 58616.0308 58616.9474 0.00000 52 VALIDATED 58620.8 58630
2614010126 284.154 -37.909 358.60173 -17.21927 58617.0634 58617.1403 0.00000 52 VALIDATED 58624.0 58631
2614010127 284.155 -37.909 358.60194 -17.21945 58620.8012 58620.8780 51.00000 52 VALIDATED 58624.6 58634
2614010128 284.157 -37.909 358.60265 -17.22104 58625.6810 58625.8831 1836.00000 52 VALIDATED 58631.8 58639
2614010129 284.156 -37.908 358.60237 -17.21988 58626.1273 58626.1419 961.00000 52 VALIDATED 58631.8 58640
2614010130 284.161 -37.913 358.59940 -17.22556 58628.0734 58628.4695 2566.00000 52 VALIDATED 58632.9 58642
2614010131 284.156 -37.907 358.60361 -17.22009 58629.0424 58629.2461 865.00000 52 VALIDATED 58633.6 58643
2614010132 284.154 -37.909 358.60193 -17.21920 58630.3213 58630.9690 2931.00000 52 VALIDATED 58634.6 58644
2614010133 284.155 -37.909 358.60181 -17.21933 58631.0306 58631.0336 190.00000 52 VALIDATED 58635.6 58645
2614010134 284.154 -37.909 358.60135 -17.21907 58646.0678 58646.0762 368.00000 52 VALIDATED 58652.8 58660
2614010135 284.155 -37.909 358.60196 -17.21944 58648.2618 58648.9127 586.00000 52 VALIDATED 58653.8 58662
2614010136 284.154 -37.909 358.60154 -17.21909 58649.0356 58649.9442 12915.00000 52 VALIDATED 58655.7 58663
2614010137 284.154 -37.908 358.60235 -17.21896 58650.1965 58650.7824 1640.00000 52 VALIDATED 58658.9 58664
2614010138 284.154 -37.908 358.60198 -17.21884 58651.1394 58651.9812 13534.05954 52 VALIDATED 58658.9 58665
2614010139 284.154 -37.909 358.60138 -17.21915 58652.0491 58652.4586 5148.00000 52 VALIDATED 58659.8 58666
2614010140 284.157 -37.908 358.60303 -17.22116 58728.4667 58728.4703 0.00000 52 VALIDATED 58736.0 58742
2614010141 284.154 -37.909 358.60124 -17.21929 58775.7910 58775.7974 99.00000 52 VALIDATED 58779.7 58789
2614010142 284.154 -37.909 358.60151 -17.21935 58807.0530 58807.0592 0.00000 49 VALIDATED 58813.2 58821