Subject: Monday Meeting 2004-09-27

Participants: SB, NL, JC, CBJ, NJW

JEMX status:
     As a preparation for the Crab calibration JMX2 DFEE has been switched
     on 2004-09-24. Its box temperature rose 20 deg, detector temp. rose
     35 deg. It is to be noted that the detector temperature is measured
     very close to some electronics, hence this reading does not reflect
     the gas and glass plate temperatures.
     The temperatures have stabilized.
     
     An updated gain increase estimate now show a 1% increase in 11 days.
     
     Anode status:
        20 dead anodes plus 18 bad anodes in JMX1
        28 dead anodes plus 19 bad anodes in JMX2
     JC's file with this information is stored in /r6/jemx/jemx_history
     
Crab calibration: just started this Monday morning. The HV stepped down for JMX1
     2004-09-26T06:36Z. The next revolution will start with HV up again, the
     nominal level will be changed after one or two revolutions.
     
Data analysis:
     SGR1806, SB: a comparison of bursts seen in JEMX and with IBAS shows
              that several undetected bursts in one system can be found
              when searching with input from other system, which leads to
              the conclusion a search should be conducted in both systems.
     GRB 040812: We need to start writing the draft. The analysis should
              have emphasis on the spectral analysis - the light curve does
              not seem to give much.
     NGC1275/Perseus: A comparison with XMM shows extension in different
              directions. This calls for a deeper analysis.
     Coma: A weaker source, no fine structure found.
     
     Pulsar 4U0115+63 has been a TOO with Santangelo as PI
     
AOB: Remember workshop in ESTEC 18-21/1 2005.

/NJW
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Niels J. Westergaard
Danish Space Research Institute
Juliane Maries Vej 30, DK 2100 Copenhagen O
Phone: +45 35 32 57 05; FAX:  +45 35 36 24 75