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- Newsgroups: sci.astro
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!darwin.sura.net!udel!princeton!spiff!richmond
- From: richmond@spiff.Princeton.EDU (Stupendous Man)
- Subject: Re: Supernova 1987A flash observed? Probably not.
- Message-ID: <1992Nov20.175014.2131@Princeton.EDU>
- Originator: news@nimaster
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- Organization: Princeton University
- References: <1edk30INNbd7@transfer.stratus.com> <1992Nov19.233634.8780@monu6.cc.monash.edu.au>
- Date: Fri, 20 Nov 1992 17:50:14 GMT
- Lines: 29
-
- wigs@yoyo.cc.monash.edy.au (Aaron Wigley) writes:
- >
- > Okay. People have sent Email to me regarding this observation. This is
- > what I can remeber. I can dig out other information at home, and post later.
-
- ....
- >
- > o The event happened in the region off-centre of the (from Memory, I may
- > be wrong) Large Magellenic Cloud. The Time was about 2115 local time,
- > (I cannot remember if Daylight saving time was in effect then - it would
- > depend on the date I will look up), on a Thursday night. Local time
- > is 10 hours ahead of UMT.
-
- Sigh. The neutrino burst from SN 1987A was observed at 7:35 UT on MONDAY,
- February 23, 1987. I'm pretty sure that the first visual observations
- of the supernova itself were made within less than 24 hours. Sorry
- about that, Aaron, but Thursday night just won't work.
-
- Looking at the light curves, I see that the U and B curves show an
- initial DECLINE for the first six or seven days. In particular, the
- U band apparent magnitude dropped from about 7 to 10 over just a
- few days! So we did catch the tail of the "flash", at least.
- (The supernova reached its maximum brightness in the longer wavelength
- bands about 89 days after the neutrino burst).
-
- --
- ----- Michael Richmond
- "This is the heart that broke my finger." richmond@astro.princeton.edu
-
-