NICER observation list: Target ID 866602
- Proposal Number = 8666
- Target ID = 866602
- Target Name = 6dFGS_gJ222755.8-433339
- Proposal Title = SEARCHING FOR CLOSE SUPERMASSIVE BLACK HOLE BINARIES WITH EROSITA, NICER, AND XMM-NEWTON
- PI = DUSAN TUBIN
- Proposal Category = ACTIVE GALAXIES AND QUASARS
- Cycle number = 8
- Observation Type = NOR
Abstract
Supermassive black hole binaries (SMBHB) are rare and elusive objects that are expected to produce periodically variable X-ray emission. eROSITA opened a window to search and discover peculiar AGNs and provide an unprecedented opportunity to discover SMBHBs. We request five monitoring campaigns for eROSITA-selected candidates that have not been observed previously. Each campaign consists of 6 individual pointings of 10 ks each, spaced roughly 4 weeks apart. The campaigns are needed to track the flux modulation of the source on a monthly time scale, discriminate red-noise-induced variability, and determine the details of follow-up observations to confirm the binary nature. The most convincing cases will be the target of higher and longer cadence NICER follow-up.
| Obsid |
RA |
DEC |
l |
b |
Start |
End |
Exposure |
Number of
Modules |
Number of
Processing |
Status of
Processing |
Date of
Processing |
Public
date |
| 8666020101 |
336.983 |
-43.560 |
353.796 |
-56.803 |
60831.1866 |
60831.9692 |
9077.0 |
50 |
5 |
VALIDATED |
60842.9 |
61025 |