NICER observation list: Target ID 263101

Abstract

The best laboratory for strong-field gravity is the inner 100s of kilometers around compact objects in low-mass X-ray binaries. The X-ray emission varies rapidly, notably in quasi-periodic oscillations (QPOs), which may be produced by general relativistic effects. Low-frequency QPOs from black holes and neutron stars share similar temporal and spectral properties, indicating that they have similar emission mechanisms, even though neutron stars have a surface and strong magnetic field in addition to general relativistic effects. With these proposed observations, we will use phase-resolved spectroscopy of two types of low-frequency QPOs to constrain and compare the emission mechanisms, to better understand accretion flows in the strong gravity regime.
Obsid RA DEC l b Start End Exposure Number of
Modules
Number of
Processing
Status of
Processing
Date of
Processing
Public
date
2631010101 326.171 38.321 87.328 -11.316 58736.5405 58736.9563 12761.0 52 3 VALIDATED 58740.6 58750
2631010102 326.172 38.321 87.328 -11.317 58736.9939 58737.0847 3201.0 52 3 VALIDATED 58741.6 58751
2631010201 326.172 38.321 87.328 -11.317 58738.0901 58738.6183 12071.0 52 3 VALIDATED 58742.6 58752