各向同性Gamma-Ray背景:太阳系碎片中Cosmic-Ray诱导的反照率?
Isotropic Gamma-Ray Background: Cosmic-Ray Induced Albedo from Debris in the Solar System?
摘要:
我们计算的伽马射线的宇宙射线与碎片(小岩石,灰尘和谷物)在奥尔特云的相互作用。我们表明,在合理的假设下,所谓的“河外伽玛射线背景”的一个显着的比例可以产生在太阳系的外边界,并可能被大面积望远镜,费米伽玛射线太空望远镜的主要仪器检测。如果被探测到,它可以提供关于奥尔特云中物质总柱密度的独特直接信息,这是任何其他方法都难以获得的。同样的伽马射线产生过程也发生在太阳系的其他小天体中,如主带小行星、木星和海王星特洛伊以及柯伊伯带天体。对这些碎片的探测可用于限制这些系统中碎片的总质量。
英文摘要:
We calculate the gamma-ray albedo due to cosmic-ray interactions with debris (small rocks, dust, and grains) in the Oort Cloud. We show that under reasonable assumptions a significant proportion of what is called the "extragalactic gamma-ray background" could be produced at the outer frontier of the solar system and may be detectable by the Large Area Telescope, the primary instrument on the Fermi Gamma-Ray Space Telescope. If detected it could provide unique direct information about the total column density of material in the Oort Cloud that is difficult to access by any other method. The same gamma ray production process takes place in other populations of small solar system bodies such as Main Belt asteroids, Jovian and Neptunian Trojans, and Kuiper Belt objects. Their detection can be used to constrain the total mass of debris in these systems.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。