X-rays and fluctuating x-winds from protostars

被引:314
作者
Shu, FH
Shang, H
Glassgold, AE
Lee, T
机构
[1] ACAD SINICA,INST ASTRON & ASTROPHYS,TAIPEI 115,TAIWAN
[2] UNIV CALIF BERKELEY,DEPT ASTRON,BERKELEY,CA 94720
[3] NYU,DEPT PHYS,NEW YORK,NY 10003
[4] ACAD SINICA,INST ASTRON & ASTROPHYS,TAIPEI 115,TAIWAN
关键词
D O I
10.1126/science.277.5331.1475
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Protostars emit more x-rays, hard and soft, than young sunlike stars in more advanced stages of formation. The x-ray emission becomes harder and stronger during flares. The excess x-rays may arise as a result of the time-dependent interaction of an accretion disk with the magnetosphere of the central star. Flares produced by such fluctuations have important implications for the x-wind model of protostellar jets, for the flash-heating of the chondrules found in chondritic meteorites, and for the production of short-lived radioactivities through the bombardment of primitive rocks by solar cosmic rays.
引用
收藏
页码:1475 / 1479
页数:5
相关论文
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