2 POPULATIONS AND MODELS OF GAMMA-RAY BURSTS

被引:201
作者
KATZ, JI [1 ]
机构
[1] WASHINGTON UNIV, MCDONNELL CTR SPACE SCI, ST LOUIS, MO 63130 USA
关键词
GAMMA RAYS; BURSTS; MHD; STARS; NEUTRON;
D O I
10.1086/173723
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Gamma-ray burst statistics are best explained by a source population at cosmological distances, while spectroscopy and intensity histories of some individual bursts imply an origin on Galactic neutron stars. To resolve this inconsistency I suggest the presence of two populations, one at cosmological distances and the other Galactic. I build on ideas of Shemi and Piran (1990) and of Rees and Meszaros (1992) involving the interaction of fireball debris with surrounding clouds to explain the observed intensity histories in bursts at cosmological distances. The distances to the Galactic population are undetermined because they are too few to affect the statistics of intensity and direction; I explain them as resulting from magnetic reconnection in neutron star magnetospheres. An appendix describes the late evolution of the debris as a relativistic blast wave.
引用
收藏
页码:248 / 259
页数:12
相关论文
共 44 条
  • [1] A 2ND CATALOG OF GAMMA-RAY BURSTS - 1978-1980 LOCALIZATIONS FROM THE INTERPLANETARY NETWORK
    ATTEIA, JL
    BARAT, C
    HURLEY, K
    NIEL, M
    VEDRENNE, G
    EVANS, WD
    FENIMORE, EE
    KLEBESADEL, RW
    LAROS, JG
    CLINE, T
    DESAI, U
    TEEGARDEN, B
    ESTULIN, IV
    ZENCHENKO, VM
    KUZNETSOV, AV
    KURT, VG
    [J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1987, 64 (01) : 305 - &
  • [2] EVIDENCE FOR SUBMILLISECOND STRUCTURE IN A GAMMA-RAY BURST
    BHAT, PN
    FISHMAN, GJ
    MEEGAN, CA
    WILSON, RB
    BROCK, MN
    PACIESAS, WS
    [J]. NATURE, 1992, 359 (6392) : 217 - 218
  • [3] GAMMA-RAY BURSTS IN THE GALACTIC HALO
    BRAINERD, JJ
    [J]. NATURE, 1992, 355 (6360) : 522 - 524
  • [4] RADIATION TRANSFER IN GAMMA-RAY BURSTS
    CARRIGAN, BJ
    KATZ, JI
    [J]. ASTROPHYSICAL JOURNAL, 1992, 399 (01) : 100 - 107
  • [5] CAVALLO G, 1978, MON NOT R ASTRON SOC, V183, P359, DOI 10.1093/mnras/183.3.359
  • [6] Cline T. L., 1980, Comments on Astrophysics. Comments on Modern Physics: Part C, V9, P13
  • [7] GAMMA-RAY BURSTS AND COSMIC-RAYS FROM ACCRETION-INDUCED COLLAPSE
    DAR, A
    KOZLOVSKY, BZ
    NUSSINOV, S
    RAMATY, R
    [J]. ASTROPHYSICAL JOURNAL, 1992, 388 (01) : 164 - 170
  • [8] STATISTICS OF COSMOLOGICAL GAMMA-RAY BURSTS
    DERMER, CD
    [J]. PHYSICAL REVIEW LETTERS, 1992, 68 (12) : 1799 - 1802
  • [9] NUCLEOSYNTHESIS, NEUTRINO BURSTS AND GAMMA-RAYS FROM COALESCING NEUTRON STARS
    EICHLER, D
    LIVIO, M
    PIRAN, T
    SCHRAMM, DN
    [J]. NATURE, 1989, 340 (6229) : 126 - 128
  • [10] LIMITS ON THE SPACE DENSITY OF GAMMA-RAY BURST SOURCES
    EPSTEIN, RI
    [J]. ASTROPHYSICAL JOURNAL, 1985, 297 (02) : 555 - 563