[vsnet-alert 3595] XTEJ1859+226 jumps to 1.4 Crab

[Taichi Kato <tkato>]

XTEJ1859+226 jumps to 1.4 Crab

  Fowarded message.  Great!

From: "Don A. Smith" <dasmith@space.mit.edu>
Subject: XTEJ1859+226 jumps to 1.4 Crab
Date: Sat, 16 Oct 1999 15:13:35 -0400 (EDT)

Greetings,

Six 90-s observations of XTE J1859+226 with the RXTE/ASM around 1999
Oct 16.50 (UT) show a mean intensity of 1.37+-0.04 Crab (2-12 keV).
The most recent cluster of observations prior to this outburst
measured an intensity of 870+-30 mCrab at 1999 Oct 16.115.  This value
is consistent with the generally linear rise this source has shown
since its initial emergence around 1999 Oct 9.7, but the most recent
points show a clear excess above the extrapolation of the trend.  The
ASM hardness rations do not indicate any spectral change during
today's outburst.

A light curve and HR plot may be seen at
http://xte.mit.edu/crossbox/xbox_011/main.html

Yours sincerely,
-- 
Don Smith			     The Rossi X-Ray Timing Explorer
dasmith@space.mit.edu        		http://vsnet.mit.edu/~dasmith/

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