[vsnet-campaign 25] Re: XTE J1118+480 ASCA-VSNET campaign

[Taichi Kato <tkato>]

Re: [vsnet-campaign 24] XTE J1118+480 ASCA-VSNET campaign

Dear Dr. Sostero,

> Instrument nr.2: 0.45m, f/22 Cassegrain + B filter + 1P21
> phot.photometer; expected resolution time: 10 sec 

   Since the existence of ~10 sec QPOs has been established (also visible
in X-rays, see also astro-ph/0005212), it would be better to choose a
higher sampling frequency (better than 5 sec resolution = Nyquist limit)
for photon-counting photometers.  If conditions allow (data recording),
sampling at 1 sec resolution would drastically improve our knowledge in
this object.  We can then expect a detectable time delay of modulations
versus X-rays, which is usually too difficult to search for most X-ray
transients.

Regards,
Taichi Kato

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