NICER observation list: Target ID 263301

Abstract

We propose a monitoring program of NGC 4151 to track the coronal temperature variations as the source flux changes, and at the same time track how the narrow Fe K line and the Compton hump respond to those flux changes. The pair-dominated model for the corona has a testable prediction for the dependence of cutoff energy on flux and spectral index, while a Compton-thick hypothesis for the narrow Fe Line predicts a correlation between the line flux, the Compton hump and the continuum flux. We will test these predictions and advance our understanding of the corona and the reflector producing the strong Fe K line.
Obsid RA DEC l b Start End Exposure Number of
Modules
Number of
Processing
Status of
Processing
Date of
Processing
Public
date
2633010101 182.637 39.406 155.075 75.064 58688.5928 58688.6826 119.0 50 3 VALIDATED 58693.6 59062
2633010201 182.635 39.406 155.080 75.063 58799.9470 58799.9561 700.0 52 2 VALIDATED 58803.8 59173
2633010202 182.635 39.406 155.079 75.063 58799.9950 58800.4104 7555.0 52 2 VALIDATED 58805.7 59174
2633010301 182.636 39.406 155.076 75.063 58841.4955 58841.8326 4488.0 52 3 VALIDATED 58847.0 59215
2633010302 182.636 39.406 155.077 75.063 58842.0117 58842.1553 2104.0 52 2 VALIDATED 58847.1 59216
2633010401 182.636 39.406 155.077 75.063 58858.4674 58858.9981 5487.0 52 3 VALIDATED 58863.6 59232
2633010402 182.635 39.406 155.079 75.063 58859.0482 58859.0625 1088.0 52 2 VALIDATED 58863.7 59233
2633010501 182.636 39.406 155.078 75.063 58868.0818 58868.6246 14909.0 52 3 VALIDATED 58872.6 59242
2633010502 182.635 39.406 155.079 75.063 58871.2609 58871.9144 10546.0 52 2 VALIDATED 58876.7 59245