Antiprotons at Solar Maximum

John W. Bieber, R. A. Burger, Ralph Engel, Thomas K. Gaisser, Stefan Roesler, and Todor Stanev
Phys. Rev. Lett. 83, 674 – Published 26 July 1999
PDFExport Citation

Abstract

New measurements with good statistics will make it possible to observe the time variation of cosmic antiprotons at 1 AU through the approaching peak of solar activity. We report a new computation of the interstellar antiproton spectrum expected from collisions between cosmic protons and the interstellar gas. This spectrum is then used as input to a steady-state drift model of solar modulation, in order to provide predictions for the antiproton spectrum as well as the antiproton/proton ratio at 1 AU. Our model predicts a surprisingly large, rapid increase in the antiproton/proton ratio through the next solar maximum, followed by a large excursion in the ratio during the following decade.

  • Received 10 March 1999

DOI:https://doi.org/10.1103/PhysRevLett.83.674

©1999 American Physical Society

Authors & Affiliations

John W. Bieber1, R. A. Burger2, Ralph Engel1, Thomas K. Gaisser1, Stefan Roesler3, and Todor Stanev1

  • 1Bartol Research Institute, University of Delaware, Newark, Delaware 19716
  • 2Space Research Unit, School of Physics, Potchefstroom University for Christian Higher Education, 2520 Potchefstroom, South Africa
  • 3CERN, CH-1211 Geneva 23, Switzerland

References (Subscription Required)

Click to Expand
Issue

Vol. 83, Iss. 4 — 26 July 1999

Reuse & Permissions
Access Options
Collection
Heating up of Superconductors
January 27, 2017

This collection marks the 30th anniversary of the discovery of high-temperature superconductors. The papers selected highlight some of the advances that have been made to date, both in understanding why these compounds behave in the way they do, and in utilizing them in applications. The papers included in the collection have been made free to read.

APS and CERN Sign Open Access Agreement for SCOAP3

APS and CERN, the host organization of SCOAP3 (Sponsoring Consortium for Open Access Publishing in Particle Physics), have signed an agreement to make the high-energy physics (HEP) articles published in three leading APS journals open access beginning January 1, 2018. This agreement acts to support the publishing of open access content for wider benefit of the HEP community.

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×