From ulysses@dusty.mpi-hd.mpg.de Wed Mar 6 03:57 MST 1996 Return-Path: Received: from astro.as.arizona.edu by dorothy.as.arizona.edu (5.x/SMI-SVR4) id AA06279; Wed, 6 Mar 1996 03:57:34 -0700 Received: from dusty (dusty.mpi-hd.mpg.de) by astro.as.arizona.edu (5.x/SMI-SV id AA16402; Wed, 6 Mar 1996 03:56:27 -0700 Date: Tue, 5 Mar 1996 18:13:10 +0200 Message-Id: <96030518131065@dusty.mpi-hd.mpg.de> From: ulysses@dusty.mpi-hd.mpg.de To: sykes@astro.as.arizona.edu Subject: telecon preparation X-Vms-To: SMTP%"sykes@as.arizona.edu" X-Vms-Cc: ULYSSES Content-Type: text Content-Length: 2690 X-Lines: 77 Status: RO Hi Mark- in preparation of the telecon tomorrow, here are some answers to questions. Regards Michael and Rainer your Mail of 28 nov 1995 1) The Jupiter radius used for the Ulysses-Jupiter distances is 71398 km 2) Values of PA greater 47 are caused by a bit flip (caused by a timing bug in the sensor electronics) of the MSB. For values greater 47, a value of 16 has to be subtracted. your Mail of 17 aug 1995 inconsistent particle parameters you asked about: # IA EA IT ET V VEF SPEED 53 60 9 5 0 11.8000 11.8000 70.0000 81 3 24 0 14 11.8000 11.8000 70.0000 89 8 6 0 15 11.8000 11.8000 70.0000 136 9 3 0 15 11.8000 11.8000 70.0000 886 4 3 0 12 11.8000 11.8000 70.0000 895 7 2 0 6 11.8000 11.8000 70.0000 923 5 4 0 5 11.8000 11.8000 70.0000 53: Here is a typo in your Mail, IT is 3 and not 5. For amplitudes IIA greater equals 60, the IT is invalid due to saturation. 81 etc. Whenever (EA > IA+2) .OR. (EA > IA+6), the ET is invalid. (Note that this is stated in the review paper,p7 with a little typo: its EA-IA<2, not IA-EA<2, and 6> already adressed b) speed error factor: In the case when either IT or ET are invalid, the VEF is simply the error of a single measurement, VEF= 2.0 for the target channel, and VEF = 1.9 for the ion channel. If both are valid, the error factor is the logarithmic mean, 1.6 EXCEPTION: Since these are all 1sigma errors, it may happen that the VIT or VET are outside the error bar given for the logarithmic mean value V. In order to avoid this, the error factor is 'stretched' to contain the values: VIT > 4*VET then VEF=(VIT/VET-4.)/31.*(1.6*SQRT(35.)-1.6) + 1.6 VET > 4*VIT then VEF=(VET/VIT-4.)/31.*(1.6*SQRT(35.)-1.6) + 1.6 page 8 The mass error is simply calculated from the speed error, keeping in mind that mass is proportianal to speed to the 3.5th. In addition, there is an error factor of 2 from the amplitude determination. Added together (of course logarithmically) results in This results in MEF = EXP( SQRT( (3.5*LOG(VEF))**2 + (LOG(2.))**2 ) ) This holds in the same way for Ulysses and Galileo.