MeV Pulsars: Modeling Spectra and Polarization
@article{Harding2017MeVPM, title={MeV Pulsars: Modeling Spectra and Polarization}, author={Alice K. Harding and Constantinos Kalapotharakos}, journal={arXiv: High Energy Astrophysical Phenomena}, year={2017} }
A sub-population of energetic rotation-powered pulsars show high fluxes of pulsed non-thermal hard X-ray emission. While this MeV pulsar population includes some radio-loud pulsars like the Crab, a significant number have no detected radio or GeV emission, a mystery since gamma- ray emission is a common characteristic of pulsars with high spin-down power. Their steeply rising hard X-ray spectral energy distributions (SEDs) suggest peaks at 0.1 - 1 MeV but they have not been detected above 200…
3 Citations
High-energy Emission Properties of Pulsars
- Physics
- 2017
The sheer number of new gamma-ray pulsar discoveries by the Fermi Large Area Telescope since 2008, combined with the quality of new multi-frequency data, has caused a revolution in the field of…
Bridging the gap - Fermi-LAT sources at 20-200 MeV
- PhysicsProceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)
- 2021
The under-explored MeV band has an extremely rich scientific potential. Awaiting an all-sky MeV mission, it is now the prime time to take full advantage of the capabilities of the Fermi Large Area…
HARPO, a gas TPC active target for high-performance γ-ray astronomy; demonstration of the polarimetry of MeV γ-rays converting to e+e− pair
- PhysicsNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
- 2019
References
SHOWING 1-10 OF 23 REFERENCES
The soft γ-ray pulsar population: a high-energy overview
- Physics
- 2015
At high-energy gamma-rays (>100 MeV) the Large Area Telescope (LAT) on the Fermi satellite already detected more than 145 rotation-powered pulsars (RPPs), while the number of pulsars seen at soft…
The Fermi-LAT detection of magnetar-like pulsar PSR J1846-0258 at high-energy gamma-rays
- Physics
- 2018
We report the detection of the pulsed signal of the radio-quiet magnetar-like pulsar PSR J1846−0258 in the high-energy γ-ray data of the Fermi Large Area Telescope (Fermi LAT). We produced…
Polarized synchrotron emission from the equatorial current sheet in gamma-ray pulsars
- Physics
- 2016
Polarization is a powerful diagnostic tool to constrain the site of the high-energy pulsed emission and particle acceleration in gamma-ray pulsars. Recent particle-in-cell simulations of pulsar…
All-Sky Medium Energy Gamma-ray Observatory (AMEGO)
- Physics
- 2017
The gamma-ray energy range from a few hundred keV to a few hundred MeV has remained largely unexplored since the pioneering but limited observations by COMPTEL on the CGRO (1991-2000). Fundamental…
High-Altitude Emission from Pulsar Slot Gaps: The Crab Pulsar
- Physics
- 2008
We present results of a 3D model of optical-to-γ-ray emission from the slot gap accelerator of a rotation-powered pulsar. Primary electrons accelerating to high altitudes in the unscreened electric…
SYNCHROTRON SELF-COMPTON EMISSION FROM THE CRAB AND OTHER PULSARS
- Physics
- 2015
Results of a simulation of synchrotron self-Compton (SSC) emission from a rotation-powered pulsar are presented. The radiating particles are assumed to be both accelerated primary electrons and a…
Phase-resolved polarization properties of the pulsar striped wind synchrotron emission.
- Physics
- 2013
Since the launch of the Fermi telescope more than five years ago, many new gamma-ray pulsars have been discovered with intriguing properties challenging our current understanding of pulsar physics.…
Ab-Initio Pulsar Magnetosphere: Particle acceleration in Oblique Rotators and High-energy Emission Modeling
- Physics
- 2017
We perform global particle-in-cell simulations of pulsar magnetospheres, including pair production, ion extraction from the surface, frame-dragging corrections, and high-energy photon emission and…
GAMMA-RAY EMISSION IN DISSIPATIVE PULSAR MAGNETOSPHERES: FROM THEORY TO FERMI OBSERVATIONS
- Physics
- 2014
We compute the patterns of γ-ray emission due to curvature radiation in dissipative pulsar magnetospheres. Our ultimate goal is to construct macrophysical models that are able to reproduce the…
Pulse Profiles, Spectra, and Polarization Characteristics of Nonthermal Emissions from the Crab-like Pulsars
- Physics
- 2007
We discuss nonthermal emission mechanisms of the Crab-like pulsars with both a two-dimensional electrodynamic study and a three-dimensional model. We investigate the emission process in the outer gap…