Lasair Transients and Variables*

Gravitational Wave Skymap: S190728q_2

The probability contours of the location of the gravitational-wave counterpart are shown below; the sky background can be changed with the selector, and the interface allows arbitary zooming. The 9 contour lines show percentiles of the probability density: the outermost line contains 90% and the innermost contains 10%. The three checkboxes below are as follows:

Coverage: shows if the ZTF survey has covered the skymap in the date range specified. Note that ZTF did not start until 20180527.
Candidates: Shows the ZTF candidates surrounding the skymap and in a time window around the event time. The form fields are in days, as differences from the event time.
Galaxies: Shows galaxies that may have the counterpart, with the size of the symbol as the 3D probability density at that galaxy position and distance.

Remember to click "submit" to refresh the page.

Distance	794.5 ± 196.5 Mpc
ISO Date:	2019-07-28T06:45:10.530893
Julian date:	2458692.781
Percent probability:	BNS=0, NSBH=14, BBH=33 MassGap=0
max prob RA,Dec	313.9, 8.6

Projection:

json ztfquery

SELECT objectId,jd,ra,decl,fid,magpsf FROM candidates WHERE jd BETWEEN 2458691.781366 and 2458693.781366 AND 
((ra BETWEEN 355.0 and 360.0 AND decl BETWEEN 35.0 AND 40.0)
 OR (ra BETWEEN 355.0 and 360.0 AND decl BETWEEN 30.0 AND 35.0)
 OR (ra BETWEEN 340.0 and 345.0 AND decl BETWEEN 30.0 AND 35.0)
 OR (ra BETWEEN 335.0 and 340.0 AND decl BETWEEN 30.0 AND 35.0)
 OR (ra BETWEEN 335.0 and 340.0 AND decl BETWEEN 25.0 AND 30.0)
 OR (ra BETWEEN 330.0 and 335.0 AND decl BETWEEN 25.0 AND 30.0)
 OR (ra BETWEEN 325.0 and 330.0 AND decl BETWEEN 25.0 AND 30.0)
 OR (ra BETWEEN 325.0 and 330.0 AND decl BETWEEN 20.0 AND 25.0)
 OR (ra BETWEEN 330.0 and 335.0 AND decl BETWEEN 20.0 AND 25.0)
 OR (ra BETWEEN 320.0 and 325.0 AND decl BETWEEN 20.0 AND 25.0)
 OR (ra BETWEEN 315.0 and 320.0 AND decl BETWEEN 20.0 AND 25.0)
 OR (ra BETWEEN 315.0 and 320.0 AND decl BETWEEN 15.0 AND 20.0)
 OR (ra BETWEEN 320.0 and 325.0 AND decl BETWEEN 15.0 AND 20.0)
 OR (ra BETWEEN 325.0 and 330.0 AND decl BETWEEN 15.0 AND 20.0)
 OR (ra BETWEEN 310.0 and 315.0 AND decl BETWEEN 15.0 AND 20.0)
 OR (ra BETWEEN 310.0 and 315.0 AND decl BETWEEN 10.0 AND 15.0)
 OR (ra BETWEEN 315.0 and 320.0 AND decl BETWEEN 10.0 AND 15.0)
 OR (ra BETWEEN 320.0 and 325.0 AND decl BETWEEN 10.0 AND 15.0)
 OR (ra BETWEEN 310.0 and 315.0 AND decl BETWEEN 5.0 AND 10.0)
 OR (ra BETWEEN 315.0 and 320.0 AND decl BETWEEN 5.0 AND 10.0)
 OR (ra BETWEEN 310.0 and 315.0 AND decl BETWEEN 0.0 AND 5.0)
 OR (ra BETWEEN 315.0 and 320.0 AND decl BETWEEN 0.0 AND 5.0)
 OR (ra BETWEEN 85.0 and 90.0 AND decl BETWEEN -40.0 AND -35.0)
 OR (ra BETWEEN 85.0 and 90.0 AND decl BETWEEN -45.0 AND -40.0)
 OR (ra BETWEEN 90.0 and 95.0 AND decl BETWEEN -45.0 AND -40.0)
 OR (ra BETWEEN 85.0 and 90.0 AND decl BETWEEN -50.0 AND -45.0)
 OR (ra BETWEEN 90.0 and 95.0 AND decl BETWEEN -50.0 AND -45.0)
 OR (ra BETWEEN 85.0 and 90.0 AND decl BETWEEN -55.0 AND -50.0)
 OR (ra BETWEEN 90.0 and 95.0 AND decl BETWEEN -55.0 AND -50.0)
 OR (ra BETWEEN 95.0 and 100.0 AND decl BETWEEN -75.0 AND -70.0)
 OR (ra BETWEEN 90.0 and 95.0 AND decl BETWEEN -75.0 AND -70.0)
 OR (ra BETWEEN 90.0 and 95.0 AND decl BETWEEN -80.0 AND -75.0)
 OR (ra BETWEEN 95.0 and 100.0 AND decl BETWEEN -80.0 AND -75.0)
) ORDER BY objectId

Coverage of ZTF	From	To
Show ZTF candidates	From	To
Show galaxies from GLADE	doubleclick a galaxy