Mewaldt, R. A. and Stone, E. C. and Vogt, R. E.
(1975)
Implications of Time Variations for the Origin of Low Energy Cosmic Ray Nitrogen and Oxygen Nuclei.
In:
Proceedings of the 14th International Cosmic Rays Conference.
Vol.2.
Max Planck Gesellschaft
, pp. 804-809.
https://resolver.caltech.edu/CaltechAUTHORS:20140410-134023645
![[img]](https://authors.library.caltech.edu/44865/1.hassmallThumbnailVersion/1975-09.pdf)  Preview |
|
PDF
- Published Version
See Usage Policy.
602kB |
Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20140410-134023645
Abstract
We report observations of time variations in the quiet time
intensity of 5-27 MeV/nuc nitrogen and oxygen and 13-25 MeV/nuc
helium nuclei, obtained with the Caltech Electron/Isotope
Spectrometers on IMP 7 and 8. We find no significant correlation
of the O variations with variations in the low intensity
fluxes of 1-2 MeV solar protons. However, we do find the O intensity
to be well correlated with the modulation of galactic
cosmic rays as measured by neutron monitors. When compared with
the neutron monitor, the factor of ~ 3 change in the 0 intensity
during 1972 through 1974 is consistent with the factor of ~ 30
increase observed since 1969. These observations imply that
the enhanced low energy N and O fluxes are not of solar origin,
but originate far enough from the sun that they undergo substantial
modulation and have significantly increased access to
1 AU at times of minimum solar modulation. It may be possible
to determine the charge state of the He and O by comparing their
time variations. The He and O variations are strongly correlated,
and both exhibit similar hysteresis effects when compared to the
neutron monitor.
Item Type: | Book Section |
---|
Related URLs: | |
---|
ORCID: | |
---|
Contact Email Address: | dmiles@caltech.edu |
---|
Additional Information: | © 1975 MPE.
Provided by the NASA Astrophysics Data System.
This work was supported in part by the National
Aeronautics and Space Administration under Contract NAS5-11066 and Grant
NGR 05-002-160. |
---|
Group: | Space Radiation Laboratory |
---|
Funders: | Funding Agency | Grant Number |
---|
NASA | NAS5-11066 | NASA | NGR 05-002-160 |
|
---|
Other Numbering System: | Other Numbering System Name | Other Numbering System ID |
---|
Space Radiation Laboratory | 1975-09 |
|
---|
Record Number: | CaltechAUTHORS:20140410-134023645 |
---|
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140410-134023645 |
---|
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
---|
ID Code: | 44865 |
---|
Collection: | CaltechAUTHORS |
---|
Deposited By: |
SWORD User
|
---|
Deposited On: | 14 Apr 2014 23:54 |
---|
Last Modified: | 20 Feb 2020 14:33 |
---|
Repository Staff Only: item control page