PEACE PP Timetags

We make use of Spin Timings and Offsets for Cluster Prime Parameters by S.J. Schwartz and P.W. Daly.

The spin period t_spin is given by

t_spin(n) = T_SP(n) - T_SP(n-1)

where T_SP(n) and T_SP(n-1) are successive sun pulse times. The PEACE PP timetags are given by

T_PP(n) = T_SP(n) + t_spin(n) / 2 + t_offset(n) + t_correction(n)

where t_offset(n) is given by

t_offset(n) = (75/1024) * t_spin(n)

and

t_correction(n) = -SPOS / (16*1024) * t_spin(n)

Therefore:

T_PP(n) = T_SP(n) + t_spin(n) * ( 1/2 + ( 75 - SPOS / 16 ) / 1024 )

Cluster

SPOS = 176

2000-01-01 00:00:00 to 2003-08-17 00:05:00
2004-06-16 11:02:00 to 2004-09-14 13:45:00

SPOS = 1200

2003-08-17 00:05:00 to 2004-06-16 11:02:00
2004-09-14 13:45:00 to ...

Double Star

SPOS = 1104

A.D. Lahiff, 27/10/2004