ToO Information

Request ID: 42547
Request Type: NEW
ToO Urgency: WITHIN A WEEK
Proposal ID: 5118

Target Info

Target Name: IGR J17091-3624
Target No.: 6858
Category: X-RAY BINARIES
Coordinates[J2000]: (257.28171, -36.40714)
Exp (ks): 60
Extended: N

Extent Size:

Background Restriction: N

Remarks:

Constraint Details

Monitor: Y

Criteria: We request the observing time to be split into 12 observations. Considering the peculiar nature of states in this source, 4 observations in the current state that shows exotic variability patterns with a two-day cadence are preferred. We will keep track of Swift lightcurve, and/or put in DDT request for NICER, and trigger the remaining 8 observations when the source enters different states.

Phase Dependent: N

Epoch:
Period:
Min:
Max:
Remarks:

Specific Time: Y

Start: 2022-04-18 00:00 UTC
End: 2022-05-10 00:00 UTC
Remarks: NICER has planned to observe this source until 2022-04-17. We can trigger our GO program after that, with 4 exposures 5 ks each, and a two-day cadence. As mentioned before, the remaining 8 exposures will be triggered when the source enters different states.

ToO: Y
Coordinate Observation: Y

Observatory: NUSTAR
Description: Our active GO program has 3 joint NuSTAR observations, each 20 ks long. We request, when possible, that NICER tries to achieve some overlapping coverage given the complementary nature of the instruments. Similar as mentioned above, we would like to trigger one of them first in the current state, and the remaining two when the source enters different states.

Uninterrupted: N

Justification:

Estimated Count Rate (cts s-1): 800.000

Requester Information

Name: MS. JINGYI WANG

Status

Request Date (UTC): 2022-04-12 21:18:37
Disposition: GO-preapproved

Date:
Reason:
Person:

Status: Complete

Date: 2022-05-03 20:18:58.170099
Person:

Misc

Note:

Target Details

Nearest Target No: 5063
Nearest Taget Name: SZ_Psc
Separation (arcmin): 75.7523
Nearby Target (<3.0'):
Referenced Target Catalogue: NICER2_Xray_Target_List_V31p.csv
Sun Angle: 52.0 deg at 2022:123:18:57:59 (UTC), 65.5 deg after 2 weeks

Planned Observations

AGS6 Reference:
Planned Snapshots:

Observation Start	Observation End	Span	Mode	Observation ID
(YYYY-DDDTHH:MM:SS)	(YYYY-DDDTHH:MM:SS)	(seconds)	Man/Opt

Visibility

AGS3 Reference:
Visibility Report:

Target Name	Target ID	Visibility Start	Visibility End	Span	Initial	Final	Relative
		(YYYY-DDDTHH:MM:SS)	(YYYY-DDDTHH:MM:SS)	(seconds)	Interference	Interference	Orbits