NICER observation list: Target ID 751201

Abstract

Accreting millisecond X-ray pulsars (AMXPs) are tremendously useful laboratories for the study of neutron stars and accretion physics. These low-mass X-ray binaries (LMXBs) are typically transient systems, showing outbursts of X-ray emission that last from between a few days to a few weeks, while often remaining dormant for years to decades in between. We propose a 60 ks monitoring campaign of the next AMXP outburst, from either a known or new system. These data will enable precise measurements of the neutron star spin frequency and binary orbit ephemeris, and, for known systems, also probe the evolution in these quantities. This program takes advantage of NICER's unique capabilities for fast timing and flexible monitoring of these transient systems.
Obsid RA DEC l b Start End Exposure Number of
Modules
Number of
Processing
Status of
Processing
Date of
Processing
Public
date
7512010101 267.787 -30.957 358.886 -2.068 60718.0254 60718.9981 4578.0 50 7 VALIDATED 60746.0 60732
7512010102 267.785 -30.962 358.882 -2.069 60719.0592 60719.9683 1194.0 50 4 VALIDATED 60729.9 60733
7512010103 267.786 -30.961 358.882 -2.069 60720.1571 60720.5484 493.0 50 4 VALIDATED 60731.2 60734
7512010104 267.786 -30.962 358.882 -2.070 60748.4461 60748.7773 0.0 49 5 VALIDATED 60758.7 60762
7512010105 267.785 -30.962 358.881 -2.069 60749.7177 60749.8762 1951.0 50 5 VALIDATED 60759.7 60763
7512010106 267.786 -30.962 358.882 -2.070 60750.3160 60750.9083 0.0 50 6 VALIDATED 60760.5 60764
7512010107 267.786 -30.962 358.882 -2.070 60751.0898 60751.8116 0.0 50 7 VALIDATED 60761.5 60765
7512010108 267.785 -30.962 358.881 -2.069 60752.0583 60752.0694 0.0 50 6 VALIDATED 60761.6 60766