SUMMARY OF PROPOSAL 51039
YAMAGATA UNIVERSITY
YAMAGATA JAPAN 990
YAMAGATA
1-4-12 KOJIRAKAWA
Tel: 0236-28-4552 Fax: 0236-28-4567
Medium: 2.5GB8MM
Subject: STARS
LIGHT-CYLINDER RADIATION FROM MILLISECOND PULSARS
ABSTRACT
We attempt to solve one of the hardest questions on the theory of pulsar magnetosphere; why millisecond pulsars operate just as ordinary pulsars in spite of the fact that their polar magnetic field is four orders of magnitude weaker? A key parameter of the magnetospheric particle acceleration is the magnetic field strength at the light cylinder. We propose to observe a millisecond pulsar B1937+21, whose light cylinder field is the strongest in the millisecond pulsar population and is as same as that of the Crab pulsar, being expected to exhibit X-ray pulsation from the accelerated particles. This observation clearly differentiates several theories for the relativistic particle acceleration in the pulsar magnetosphere.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| TADAYASU DOTANI | ISAS | JAPAN |
| NOBUYUKI KAWAI | RIKEN | JAPAN |
| YOSHITAKA SAITO | UNIVERSITY OF TOKYO | JAPAN |
| MASAHARU HIRAYAMA | UNIVERSITY OF TOKYO | JAPAN |
| SHUICHI GUNJI | YAMAGATA UNIVERSITY | JAPAN |
| HIROHISA SAKURAI | YAMAGATA UNIVERSITY | JAPAN |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)PSR B1937+21 | 3 | 294.9125 | 21.5831 | 40 ks | N | Y | P | 0.09000 | 1 |