ORCID Profile
0000-0002-8999-9249
Current Organisation
Radboud Universiteit
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: Author(s)
Date: 2017
DOI: 10.1063/1.4969027
Publisher: Author(s)
Date: 2017
DOI: 10.1063/1.4969025
Publisher: SPIE
Date: 10-08-2016
DOI: 10.1117/12.2232082
Publisher: American Physical Society (APS)
Date: 15-01-2020
Publisher: Elsevier BV
Date: 12-2017
Publisher: Elsevier BV
Date: 02-2017
Publisher: American Association for the Advancement of Science (AAAS)
Date: 17-11-2017
Abstract: Several cosmic-ray detectors have found more positrons arriving at Earth than expected. Some researchers interpret this as a signature of exotic physics, such as the annihilation of dark matter particles. Others prefer a more mundane explanation that involves positron generation at pulsars followed by diffusion to Earth. Abeysekara et al. detected extended emission of gamma rays around two nearby pulsars, generated by high-energy electrons and positrons. The size of the extended emission was used to calculate how far positrons generated by the pulsars diffuse through space—which turns out to be insufficient to reach Earth. The excess positrons detected on Earth must therefore have a more exotic origin than nearby pulsars. Science , this issue p. 911
Publisher: American Astronomical Society
Date: 09-05-2017
Publisher: American Astronomical Society
Date: 16-06-2017
Publisher: SPIE
Date: 27-07-2016
DOI: 10.1117/12.2231685
No related grants have been discovered for Harm Schoorlemmer.