A boundary-consistent two-zone kernel shows that distant pulsars beyond 1 kpc can contribute 37-47% of the 10-100 GeV positron flux for a 0.2 kpc disk thickness, with Geminga-like halos compatible with AMS-02 data when including a 100 pc cavity.
The energy spectrum of cosmic-ray electrons at TeV energies
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abstract
The very large collection area of ground-based gamma-ray telescopes gives them a substantial advantage over balloon/satellite based instruments in the detection of very-high-energy (>600 GeV) cosmic-ray electrons. Here we present the electron spectrum derived from data taken with the H.E.S.S. system of imaging atmospheric Cherenkov telescopes. In this measurement, the first of this type, we are able to extend the measurement of the electron spectrum beyond the range accessible to direct measurements. We find evidence for a substantial steepening in the energy spectrum above 600 GeV compared to lower energies.
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UNVERDICTED 2representative citing papers
The thesis presents a new 3-to-2 freezeout mechanism, bound-state effects on searches, a new axion interferometric search, reionization assessments, 21-cm constraints, and the DarkHistory code for ionization and thermal histories.
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A Boundary-Consistent Two-Zone Electron Kernel for Distant Pulsar Contributions to Positron Flux and Anisotropy
A boundary-consistent two-zone kernel shows that distant pulsars beyond 1 kpc can contribute 37-47% of the 10-100 GeV positron flux for a 0.2 kpc disk thickness, with Geminga-like halos compatible with AMS-02 data when including a 100 pc cavity.
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Dark Matter Energy Deposition and Production from the Table-Top to the Cosmos
The thesis presents a new 3-to-2 freezeout mechanism, bound-state effects on searches, a new axion interferometric search, reionization assessments, 21-cm constraints, and the DarkHistory code for ionization and thermal histories.