GAMMA-RADIATION FROM PULSAR MAGNETOSPHERIC GAPS

被引:75
作者
CHIANG, J
ROMANI, RW
机构
[1] Department of Physics, Stanford University, Stanford
关键词
GAMMA-RAYS; THEORY; PULSARS; GENERAL;
D O I
10.1086/172024
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We investigate the production of gamma rays in two pulsar emission models: the "polar cap" model and the "outer gap" model. For the former, we have performed detailed simulations of energetic electrons flowing in the vacuum dipole open field line region. In the outer gap case, we generate light curves for various magnetosphere geometries. Using data from radio and optical observations, we construct models for specific viewing angles appropriate to the Crab and Vela pulsars. Phase-resolved spectra are also computed in the polar cap case and provide signatures for testing the models. The calculations have been extended to include millisecond pulsars, and we have been able to predict fluxes and spectra for populations of recycled pulsars, which are compared to COS B data for globular cluster populations.
引用
收藏
页码:629 / 637
页数:9
相关论文
共 24 条
[1]  
[Anonymous], 1975, CLASSICAL ELECTRODYN
[2]   PAIR CREATION ABOVE PULSAR POLAR CAPS - GEOMETRICAL STRUCTURE AND ENERGETICS OF SLOT GAPS [J].
ARONS, J .
ASTROPHYSICAL JOURNAL, 1983, 266 (01) :215-241
[3]  
BERTSCH DL, 1992, UNPUB NATURE
[4]  
BUCCHERI R, 1989, TIMING NEUTRON STARS, P419
[5]   ENERGETIC RADIATION FROM RAPIDLY SPINNING PULSARS .2. VELA AND CRAB [J].
CHENG, KS ;
HO, C ;
RUDERMAN, M .
ASTROPHYSICAL JOURNAL, 1986, 300 (02) :522-539
[6]  
CLEAR J, 1987, ASTRON ASTROPHYS, V174, P85
[7]   ELECTROMAGNETIC CASCADES IN PULSARS [J].
DAUGHERTY, JK ;
HARDING, AK .
ASTROPHYSICAL JOURNAL, 1982, 252 (01) :337-347
[8]   PAIR PRODUCTION IN INTENSE ELECTROMAGNETIC-FIELDS OCCURRING IN ASTROPHYSICAL SITUATIONS [J].
DAUGHERTY, JK ;
LERCHE, I .
ASTROPHYSICS AND SPACE SCIENCE, 1975, 38 (02) :437-445
[10]  
GRENIER IA, 1988, ASTRON ASTROPHYS, V204, P117, DOI 10.1063/1.37232