NICER observation list: Target ID 664801

Abstract

Serpens X-1 is a persistently accreting neutron star low-mass X-ray binary that exhibits multiple emission line components in its reflection spectrum. The detection of multiple emission line components (e.g., Fe K and Fe L) in the reflection spectrum provides the opportunity to test different theories about where the emission arises in the disk and challenge our current understanding of accretion. Therefore, we request a 30 ks NICER observation with a contemporaneous 30 ks NuSTAR observation in order to test the emission radius of the Fe K line and lower-energy Fe L blend. We demonstrate that the requested observations are necessary to test the different ideas with respect to emission radii and enhance our understanding of accretion.
Obsid RA DEC l b Start End Exposure Number of
Modules		 Number of
Processing		 Status of
Processing		 Date of
Processing		 Public
date
6648010101 279.990 5.036 36.118 4.842 60097.9005 60097.9896 3330.0 51 5 VALIDATED 60109.7 60291
6648010102 279.990 5.036 36.118 4.842 60098.0295 60098.9546 19308.0 51 5 VALIDATED 60109.7 60292
6648010103 279.990 5.035 36.118 4.841 60099.0046 60099.0176 298.0 51 5 VALIDATED 60109.8 60293