SUMMARY OF PROPOSAL 51039

DR SHINPEI SHIBATA
SHIBATA@KSTAR.KJ.YAMAGATA-U.AC.JP

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 DOTANIISASJAPAN
NOBUYUKI KAWAIRIKENJAPAN
YOSHITAKA SAITOUNIVERSITY OF TOKYOJAPAN
MASAHARU HIRAYAMAUNIVERSITY OF TOKYOJAPAN
SHUICHI GUNJIYAMAGATA UNIVERSITYJAPAN
HIROHISA SAKURAIYAMAGATA UNIVERSITYJAPAN

TARGETS

TARGET NAMEPRIRADECTIMETCOFFGISSIS CNTOBS
1)PSR B1937+21
3
294.9125 21.5831 40 ksN
Y
P
0.09000
1