4.6 Article

THE WMAP HAZE FROM THE GALACTIC CENTER REGION DUE TO MASSIVE STAR EXPLOSIONS AND A REDUCED COSMIC RAY SCALE HEIGHT

期刊

ASTROPHYSICAL JOURNAL LETTERS
卷 710, 期 1, 页码 L53-L57

出版社

IOP PUBLISHING LTD
DOI: 10.1088/2041-8205/710/1/L53

关键词

acceleration of particles; cosmic rays; radio continuum: general; shock waves; stars: winds, outflows; supernovae: general

资金

  1. AUGER [05 CU 5PD 1/2]
  2. NASA [NNX09AC14G]
  3. DOE [UD-FG02-91ER40626]
  4. Research Department of Plasmas with Complex Interactions (Bochum)
  5. NASA [120756, NNX09AC14G] Funding Source: Federal RePORTER

向作者/读者索取更多资源

One important prediction of acceleration of particles in the supernova caused shock in the magnet ic wind of exploding Wolf-Rayet and red supergiant stars is the production of an energetic particle component with an E-2 spectrum at a level on the order of 1% of the full cosmic ray electron population. After allowing for transport effects, so steepening the spectrum to E-7/3, this component as cosmic ray electrons readily explains the WMAP haze from the Galactic center region in spectrum, intensity, and radial profile; this requires the diffusion timescale for cosmic rays in the Galactic center region to be much shorter than in the solar neighborhood: the energy for cosmic ray electrons at the transition between diffusion dominance and loss dominance is shifted to considerably high er particle energy. We predict that more precise observations will find a radio spectrum of nu(-2/3), at higher frequencies nu(-1), and at yet higher frequencies finally nu(-3/2).

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据