Image Details
Caption: Fig. 8.
This plot shows all published Geminga upper limits and detections, along with error bars (when available). The three 102.5 MHz detections are offset slightly from each other for clarity. The slope of the solid line (2.65) represents our calculated lower limit on Geminga’s spectral index.
© 1999. The American Astronomical Society. All rights reserved. Printed in U.S.A.