NICER observation list: Target ID 558301

Abstract

After two major outbursts in 2006 and 2011, CXOU J164710.2-455216 entered a multi-outburst phase in 2017 May, during which three flux enhancements were registered. The latest occurred in 2018 February and since then, the source flux is slowly decaying towards the quiescent level. An intensive multi-instrumental campaign found that the magnetar rotational properties had changed following the latest bursting event, adding J1647 to the small group of low-B magnetars. With the monitoring campaign proposed here, we will be able to infer the dipolar magnetic field strength during a non-active state and to test the untwisting-bundle scenario for magnetar outbursts.
Obsid RA DEC l b Start End Exposure Number of
Modules		 Number of
Processing		 Status of
Processing		 Date of
Processing		 Public
date
5583010101 251.794 -45.871 339.546 -0.431 59648.6169 59648.8345 5701.0 52 4 VALIDATED 59662.3 59662
5583010201 251.793 -45.872 339.546 -0.431 59679.3190 59679.7868 5131.0 52 7 VALIDATED 59689.6 59693
5583010301 251.792 -45.872 339.545 -0.431 59705.2592 59705.8495 2965.0 52 5 VALIDATED 59715.7 59719
5583010302 251.792 -45.871 339.546 -0.430 59706.0358 59706.8171 3078.0 52 6 VALIDATED 59716.6 59720
5583010401 251.792 -45.872 339.546 -0.431 59740.1212 59740.5836 6941.0 52 4 VALIDATED 59752.1 59754
5583010501 251.792 -45.871 339.545 -0.430 59770.1919 59770.8481 6368.0 52 5 VALIDATED 59783.0 59784
5583010601 251.796 -45.872 339.547 -0.433 59799.7543 59799.9542 1339.0 52 5 VALIDATED 59809.1 59813
5583010602 251.796 -45.872 339.547 -0.433 59800.0113 59800.7287 4825.0 52 4 VALIDATED 59810.7 59814
5583010701 251.793 -45.871 339.546 -0.431 59832.1987 59832.6616 1124.0 52 4 VALIDATED 59842.9 59846
5583010801 251.792 -45.873 339.544 -0.432 59861.6479 59861.9174 1753.0 49 5 VALIDATED 59871.7 59875
5583010802 251.790 -45.873 339.543 -0.431 59862.0352 59862.4354 1212.0 49 5 VALIDATED 59871.7 59876