[vsnet-alert 9323] GW Lib superhump period change

[Taichi Kato]

Dear all,

   A preliminary analysis of GW Lib superhump light curve
has shown that the system had experienced a sudden period
change at around April 24.9 UT.  The period discontinuously
decreased from 0.05461(4) d to 0.05387(2), corresponding
to fractional period excesses of 2.4% and 1.0%, respectively.
More detailed analysis is being undertaken by Imada-san.