[vsnet-grb-info 545] Re: HETE 2441 = Messier 1 ?

[torii@crab.riken.go.jp (Ken'ichi Torii)]

According to [vsnet-grb 578]:

COMMENTS:       Definitely not a GRB.  
COMMENTS:       This trigger is the result of Earth Limb emersion.  
COMMENTS:       This position matches a known X-ray source (Crab).  

 It is not a burst and observations are not recommended. The Crab
just appeared from the earth limb and somehow triggered the system.

Ken'ichi Torii

>> Re: HETE 2441 = Messier 1 ?
>> 
>> >   HETE (High Energy Transient Explorer) II detect a X-ray transient on
>> > Nov. 9.112 (02:41:36.16) UT.  The reported position was 05h34m01s,
>> > +22o02'56" (error circle diameter = 60'), which includes the crab
>> > nebula = Messier 1 (05h34m31s.97, +22o00'52".1).  To my knowledge,
>> > this is the first time that the crab nebula is detected (say,
>> > localized) by HETE II, so something unusual can undergoes on Messer 1.
>> > The urgent follow up observation of Messier 1 is extremely urged.
>> 
>>    Being the best known object in the entire sky, I would expect there
>> may be existing immediately preceding or "just in burst" images or
>> photographs of M1 and its surroundings.  Please send any such
>> images/photographs to Yamaoka-san (yamaoka@rc.kyushu-u.ac.jp) for
>> further examination.  For CCD images, the FITS format is preferred.
>> 
>> Regards,
>> Taichi Kato
>>

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