REVIEW 5 cited by
Gamma-ray Pulsar Halos in the Galaxy
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Gamma-ray Pulsar Halos in the Galaxy
read the original abstract
Pulsar halos are extended gamma-ray structures generated by electrons and positrons escaping from pulsar wind nebulae (PWNe), considered a new class of gamma-ray sources. They are ideal indicators for cosmic-ray propagation in localized regions of the Galaxy and particle escape process from PWNe. The cosmic-ray diffusion coefficient inferred from pulsar halos is more than two orders of magnitude smaller than the average value in the Galaxy, which has been arousing extensive discussion. We review the recent advances in the study of pulsar halos, including the characteristics of this class of sources, the known pulsar halos, the possible mechanisms of the extremely slow diffusion, the critical roles of pulsar halos in the studies of cosmic-ray propagation and electron injection from PWNe, and the implications on the problems of the cosmic positron excess and the diffuse TeV gamma-ray excess. Finally, we give prospects for the study in this direction based on the expectation of a larger sample of pulsar halos and deeper observations for bright sources.
Forward citations
Cited by 5 Pith papers
-
PHECT: A lightweight computation tool for pulsar halo emission
PHECT is a configurable computation tool for pulsar halo gamma-ray emission using multiple transport models and stable finite-volume discretizations.
-
Search for TeV emission from spider millisecond pulsars with HAWC
HAWC observations yield no TeV detections from spider MSPs, with upper limits indicating they are unlikely to contribute substantially to Galactic diffuse emission at TeV energies.
-
Discrete treatment of inverse Compton scattering: implications on parameter estimation in gamma-ray astronomy
Discrete ICS simulation shows continuous approximations overestimate evolved cutoff energies, leading to lower inferred electron injection cutoffs for Geminga at 95% CL and potential overestimation of acceleration in ...
-
Constraining the slow-diffusion zone size and electron injection spectral index for the Geminga pulsar halo
A two-zone diffusion model fitted to HAWC morphology and spectrum data constrains Geminga's slow-diffusion zone to 30-70 pc and injection index p ≤ 2.17, reproducing AMS-02 positrons as a derived outcome.
-
Resolving diffusion signatures in distant pulsar halos with current and future experiments
Simulations indicate that CTA's angular resolution and LHAASO-KM2A's large area will improve morphological separation of diffusion-based pulsar halos from simpler spatial models.
discussion (0)
Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.