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HQM
- RESULTS - 2
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Long time variabilityThe lightcurves cover time intervalls up to 15 years. The general HQM project lasted from 1988 to 1995. Some campaigns from 1994 to 1996 and some between 1995 and 2001 enlarged the database to deterine the long time variability of quasars. Although in the majority of the lightcurves no special characteristics have been found, which may be because of too few data, too large gaps or too low brightness etc we have detected some classes of variablílity which is worth to extract from the generality. |
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Long wavesSome objects show "wave like" variability with long periods.
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Very Long Periods. For these objects non finished variability structures were observed with periods somtimes far longer than 20 years.
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Extraordinary features. We have observed some lightcurves with remarkeble and unusual structures:
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No variability. What about lightcurves with no variability at all? Except from some few objects from which we have only two or three data points, we have seen only one object which seems to be very quiet, 0216+080. All other, e.g. 0014+813, where we thought it would not have any structure, it shows a very small but noticible structure.
We presume, 0216+080 will show structure as well, but out of reach of our detectability. |
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JOMPQ |
MEGAPHOT |