Principal Investigator Email Address
kw113@star.le.ac.uk
Estimated Total Execution Time (hours, including overheads)
n/a
General Description
This is a target-of-opportunity program aimed K band imaging polarimetry of a bright long gamma-ray burst and/or a short gamma-ray burst afterglow to accompany a R band imaging polarimetry program with FORS1 (run A and E). The aim is to obtain an accurate detection or upper limit on the K band polarisation of the afterglow to compare with the R band polarisation lightcurve.
Waiver Requests
No Waiver Request was submitted
Critical Observing Condition Constraints
n/a
Time-Critical Aspects
If possible, we would like the ISAAC polarisation measurement(s) to be (quasi)simultaneous (within a few hours) with (one of) the R band polarimetry measurements at FORS1. In case this is not possible - due to eg instrument availibility - we will indicate a prefered time of observation in the request. We will communicate with the observer to establish the best strategy.
Special Execution Requirements
n/a
Special Calibration Information
We have submitted OBs for calibration, listed below. We have submitted calibration OBs for both polarised and unpolarised standards. We have two polarised standards and eight unpolarised ones. We have done that to be able to calibrate for both instrumental polarisation and Galactic (foreground) polarisation. These stars are in different positions on the sky. Because our target coordinates are not yet known (this is a ToO program for gamma-ray bursts), we will provide the name and time of execution for the calibration OB(s) when we request a ToO observation. Depending on the science OBs and visibility, calibration OBs will be selected by us from the list of submitted OBs. Unpolarised standard stars are sufficient to calibrate the polarimetry, but we also submit polarised standard star OBs to be able to more accurately calibrate the position angle of the polarisation. Unfortunately, the two polarised standards are not very well visible in p82, but there are no other suitable (faint) calibrators in the southern hemisphere at the moment. The two polarised calibration stars are: HD118112, Ks-magnitude ~10.8, B9V star, OBs: *_s1_*.obx RCrA 15, Ks-magnitude ~10.9, GI star, OBs: *_s2_*.obx The eight unpolarised calibration stars are WD2359-434, Ks-magnitude ~12.4, white dwarf, DAs type, OBs: *_wd1.obx WD0310-688, Ks-magnitude ~11.9, white dwarf, DA type, OBs: *_wd2.obx WD0752-676, Ks-magnitude ~12.4, white dwarf, DC type, OBs: *_wd3.obx WD1344+106, Ks-magnitude ~12.2, white dwarf, DAw type, OBs: *_wd4.obx WD1615-154, Ks-magnitude ~14.3, white dwarf, DA type, OBs: *_wd5.obx WD1620-391, Ks-magnitude ~11.8, white dwarf, DA type, OBs: *_wd6.obx WD2039-202, Ks-magnitude ~13.0, white dwarf, DAw type, OBs: *_wd7.obx WD2149+021, Ks-magnitude ~13.4, white dwarf, DA type, OBs: *_wd8.obx
ToO Information
Coordinates and a findingchart will be submitted together with the ToO request. This request will contain OBs that will be selected from the submitted OBs. Requests are likely to contain more than one OB: we will communicate and coordinate order of execution and planning with the observer when necessary. Please make the data (both science and calibration) available through ftp a.s.a.p., so we can analyze the data and immediately determine our strategy for follow-up observations in the same night and/or following nights. Considering the fact that this is a ToO program, the observing strategy may change a bit, leading to slight changes in the prepared OBs. We will communicate these clearly to the observer. Note that, to be able to deal with different ToO strategies, we may have submitted more OBs than our allocated time allows for. We will, however, take care not to override the total allocated time.
ToO Activators List
Klaas Wiersema kw113@star.le.ac.uk Evert Rol er45@star.le.ac.uk Nial Tanvir nrt3@star.le.ac.uk Andrew Levan A.J.Levan@warwick.ac.uk Daniele Malesani malesani@astro.ku.dk Paul Vreeswijk pmv@astro.ku.dk Pall Jakobsson P.Jakobsson@herts.ac.uk Javier Gorosabel jgu@iaa.es Eliana Palazzi palazzi@iasfbo.inaf.it
Is this a Pre-imaging run ?
false
Pre-imaging Requirements
n/a
Source(s) of Pre-imaging
Pre-imaging sources not listed above
Do all your OBs comply with the instrument-specific requirements listed on the instrument-specific Phase 2 web page ?
If this is a pre-imaging run, did you select PRE-IMAGING for the Observing Category for each Observing Template ?
N/A
Do all your finding charts comply with both the general and instrument-specific Phase 2 Web Pages ?
If you submitted OBs for standard stars, did you specify the magnitude and spectral type of all standard stars in the OBs ?
Have you included OBs for any calibrations that you need but which are not part of the Calibration Plan ?
If you are observing Moving Targets, have you attached suitable ephemeris files to your OBs?
N/A
If you have preferences which OBs should be executed first, did you make use of the User Priority field in the OBs ?
N/A
If this is a run that requires coordinated observations with other facilities, did you give proper instructions in the Time-Critical Aspects Section ?
N/A
If you submitted OBs for standard stars, did you use the provided StandardStar templates ?
If you are using a specific offset pattern or position angle, did you check carefully the definition in the manual ?
If you are doing spectroscopy, did you draw the slit on the Finding Charts ?
N/A
Did you enter the magnitude of the brightest star in the field-of-view in the 'Instrument Comments' field of each OB ?
If you use the MoveToPixel acquisition, have you given clear instructions on the FC and in the OB comment section as to how the field should be centered ?
N/A