P71-506: The new populations of gamma-ray bursts revealed by SVOM and Einstein Probe

PI: Daniele Bjorn Malesani, Johan Peter Uldall Fynbo, Dong Xu

ALFOSC/StanCam + NOTCam ToO program with override status

ToO triggers have override status.

The OB generator will be used to request all observations.
The OBs will automatically appear in the OB queue and OB generated scripts will be automatically placed in the directory ~/scripts/71-506/.

For the observer:

Go to the directory
cd ~/scripts/71-506
List the available scripts
ls -lrt
and execute the OB generated scripts requested.
If you cannot find the corresponding observing script, please (re-)compile it from the Queue interface.

In the case of NOTCam, make sure that differential skyflats are obtained for the camera and filter setup that is requested.

Remember to fill the ToO or SoftToO tracking logs of this program.

P71 tracking

Program Tracking

Proposal 71-506

Semester P72: 20251001 - 20260401

Principal Investigator Daniele Bjorn Malesani, Johan Peter Uldall Fynbo, DongXu

Programme The new populations of gamma-ray bursts revealed by SVOM and Einstein Probe

Instrument AL+NC+ST

Time Allocation 35h hard ToO, rest as SoftToO

Total Nights 70h

Type RRM+ToO+SoftToO

Notes Override. Soft triggers during Nordic service or Technical nights

Total Time Spent 17:10 (hh:mm)

Proposal Date Time Type Targets Files Comments Status

71-506 2025-10-01 00:35 ToO GRB251001B Observed with good seeing Observed

71-506 2025-10-07 01:33 ToO GRB251007A ALIj070147 - ALIj070155, ALIj070156 - ALIj070169 Observed with clear sky and seeing varying between 0.7'' and 1.0'' Observed

71-506 2025-10-09 00:55 ToO GRB251001B STIj090008 - STIj090016 Observed with clear skies and seeing around 0.7". For skyflats, take those taken in the morning. Observed

71-506 2025-10-13 01:36 ToO GRB251013C, Feige110 ALIj130066 - ALIj130089, ALIj130130 - ALIj130137 Observed in clear skies and occasionally through thin clouds and approx. 0.6 arcsec. seeing. Spectroscopy block stopped early (after 2 successful exposures) as agreed with the PI's. Observed

71-506 2025-10-14 00:57 ToO GRB251013C ALIj140085 - ALIj140094 Clear skies, and the seeing was around 1.3". Observed

71-506 2025-10-15 00:00 ToO Could not be observed due to bad weather. Failed

71-506 2025-10-18 00:56 ToO GRB251013C ALIj180056 - ALIj180065 Observed through thin clouds, sub-arc seeing. Observed

71-506 2025-10-19 00:57 SoftToO GRB251013C ALIj190236 - ALIj190245 Observed through thin clouds and seeing of approx. 0.8 arcsec. Observed

71-506 2025-10-21 00:29 ToO GRB251017A ALIj210059 - ALIj210063 Target observed with windy conditions and seeing around 2-2.5". Observed

71-506 2025-10-22 00:28 ToO GRB251017A ALIj220056 - ALIj220060 Target observed with clear skies and good seeing. Observed

71-506 2025-10-26 01:41 ToO GRB251013C, GRB251025B ALIj260002 - ALIj260006, ALIj260023 - ALIj260036 Observed under clear sky/thin clouds and seeing around 0.9". Observed

71-506 2025-10-27 00:19 ToO GRB251025B ALIj270078 - ALIj270080 Observed under clear sky and with seeing 1.4". Observed

71-506 2025-10-29 00:30 ToO GRB251025B ALIj290044 - ALIj290048 Observed at 22:30 with low airmass. Great seeing conditions and grey, clear sky Observed

71-506 2025-10-29 00:58 SoftToO GRB251013C ALIj290049 - ALIj290058 Observed with similar conditions as GRB_b. Observed

71-506 2025-10-30 00:30 SoftToO GRB251025B ALIj300083 - ALIj300087 Observed with great seeing clear skies and stable conditions. Observed

71-506 2025-11-01 01:03 SoftToO GRB251017A, GRB251025B ALIk010073 - ALIk010077, ALIk010088 - ALIk010096 Thin clouds, and the seeing was around 1.8". Observed

71-506 2025-11-02 01:05 ToO GRB251103A ALIk020381 - ALIk020392 Thin clouds, and the seeing was around 1.0". "grb251103a_alfosc_ima_rz" was executed for only 20 minutes at the PI’s request to switch to the counterpart (files ALIk020381 - ALIk020383). Observed

71-506 2025-11-03 00:08 SoftToO none NCIk030714 - NCIk030718 Interrupted the OB due to seeing being above the limit of 1.3". Observations failed. Failed

71-506 2025-11-06 00:47 SoftToO GRB251013C ALIk060106 - ALIk060117 Observed at low airmass and great seeing. Observed

71-506 2025-11-10 01:43 SoftToO GRB251013C, GRB251025B ALIk100077 - ALIk100085 , ALIk100146 - ALIk100154 Great seeing. Targets observed with low airmass. Observed

The above information is collected from the ToO/Mon reports that have been created by the observer.

Should any of the observations have been carried out using the OB system, you will find additional information HERE

Last modified: October 02 2025