NASA Logo, External Link
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed AddThis share icon

Record Details

Record 28 of 4074
Anatomy of a cosmic-ray neutrino source and the Cygnus X-3 system
External Online Source: doi:10.1038/316418a0
Author and Affiliation:
Stecker, F. W.(NASA Goddard Space Flight Center, Greenbelt, MD, United States)
Harding, A. K.(NASA Goddard Space Flight Center, Greenbelt, MD, United States)
Barnard, J. J.(NASA Goddard Space Flight Center, Greenbelt, MD, United States)
Abstract: The effects of an intense beam of ultra-high energy cosmic rays from a compact object in the Cygnus X-3 binary system hitting the companion star, and of the subsequent production of secondary neutrinos, are examined. A maximum allowable beam luminosity of about 10 to the 42nd erg/s is found for a system containing a 1-10 solar mass main sequence target star. The proton beam must heat a relatively small area of the target star to satisfy observational constraints on the resulting stellar wind. With such a model, the neutrino to gamma-ray flux ratio of about 1000 can result from a combination of gamma-ray absorption and a large neutrino to gamma-ray duty cycle ratio. It is found that the high density of the atmosphere resulting from compression by the beam leads to pion cascading and a neutrino spectrum peaking at 1-10 GeV energies.
Publication Date: Aug 01, 1985
Document ID:
(Acquired Nov 28, 1995)
Accession Number: 85A44391
Subject Category: ASTROPHYSICS
Document Type: Journal Article
Publication Information: Nature; p. 418-420; (ISSN 0028-0836); 316
Publisher Information: United Kingdom
Financial Sponsor: NASA; United States
Organization Source: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Description: 3p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
Imprint And Other Notes: Nature (ISSN 0028-0836), vol. 316, Aug. 1, 1985, p. 418-420.
Availability Source: Other Sources
› Back to Top
Find Similar Records
NASA Logo, External Link
NASA Official: Gerald Steeman
Site Curator: STI Program
Last Modified: August 18, 2011
Contact Us