NICER observation list: Target ID 855537
- Proposal Number = 8555
- Target ID = 855537
- Target Name = A3-DOY110
- Proposal Title = EXPLORING SOLAR-WIND DYNAMICS THROUGH COMETARY INTERACTIONS DURING SOLAR MAXIMUM: A COMPARATIVE STUDY OF C/2023 A3 (TSUC
- PI = DENNIS BODEWITS
- Proposal Category = SOLAR SYSTEM OBJECTS
- Cycle number = 8
- Observation Type = NOR
Abstract
We request 200 ks of NICER observing time to study the interaction between the solar wind and two bright comets, C/2023 A3 (Tsuchinshan-ATLAS) and P/2010 H2 (Vales). Utilizing NICER's agility and sensitivity, we aim to compare charge-exchange spectra arising from the comets interaction with varied solar-wind states. Simultaneous observations of both comets at distinct solar latitudes allow us to compare spectra from differing solar-wind conditions. This offers a unique opportunity to map the solar wind during solar maximum and explore charge-exchange reactions in astrophysical plasmas spanning a 0.1 10 MK temperature range. By comparing the cometary spectra we will investigate the source of unexplained emission features between 1-2 keV.
| Obsid |
RA |
DEC |
l |
b |
Start |
End |
Exposure |
Number of
Modules |
Number of
Processing |
Status of
Processing |
Date of
Processing |
Public
date |
| 8555370101 |
150.011 |
9.192 |
228.564 |
45.804 |
60783.0136 |
60783.4090 |
661.0 |
50 |
4 |
VALIDATED |
60794.1 |
60977 |
| 8555370201 |
150.009 |
9.191 |
228.564 |
45.802 |
60785.0185 |
60785.5477 |
3000.0 |
50 |
5 |
VALIDATED |
60797.0 |
60979 |
| 8555370301 |
150.013 |
9.190 |
228.568 |
45.805 |
60787.0148 |
60787.9319 |
6124.0 |
50 |
6 |
VALIDATED |
60798.9 |
60981 |