Corpus ID: 119505177

Magnetars as Astrophysical Laboratories of Extreme Quantum Electrodynamics: The Case for a Compton Telescope

  title={Magnetars as Astrophysical Laboratories of Extreme Quantum Electrodynamics: The Case for a Compton Telescope},
  author={Zorawar Wadiasingh and George Younes and Matthew G. Baring and Alice K. Harding and Peter L. Gonthier and Kun Hu and A. van der Horst and Silvia Zane and Chryssa Kouveliotou and Andrei M. Beloborodov and Chanda Prescod-Weinstein and Tanmoy Chattopadhyay and Sunil Chandra and Constantinos Kalapotharakos and Kyle P. Parfrey and Harsha Blumer and Demosthenes Kazanas},
  journal={arXiv: High Energy Astrophysical Phenomena},
A next generation of Compton and pair telescopes that improve MeV-band detection sensitivity by more than a decade beyond current instrumental capabilities will open up new insights into a variety of astrophysical source classes. Among these are magnetars, the most highly magnetic of the neutron star zoo, which will serve as a prime science target for a new mission surveying the MeV window. This paper outlines the core questions pertaining to magnetars that can be addressed by such a technology… Expand

Figures from this paper

Opacities for photon splitting and pair creation in neutron star magnetospheres
Over the last four decades, persistent and flaring emission of magnetars observed by various telescopes has provided us with a suite of light curves and spectra in soft and hard X-rays, with noExpand
Astrophysics in Strong Electromagnetic Fields and Laboratory Astrophysics
Recent observations of gravitational waves from binary mergers of black holes or neutron stars and the rapid development of ultra-intense lasers lead strong field physics to a frontier of new physicsExpand
A Space-based All-sky MeV γ-ray Survey with the Electron Tracking Compton Camera
A sensitive survey of the MeV gamma-ray sky is needed to understand important astrophysical problems such as gamma-ray bursts in the early universe, progenitors of Type Ia supernovae, and the natureExpand
All-sky Medium Energy Gamma-ray Observatory: Exploring the Extreme Multimessenger Universe
The All-sky Medium Energy Gamma-ray Observatory (AMEGO) is a probe class mission concept that will provide essential contributions to multimessenger astrophysics in the late 2020s and beyond. AMEGOExpand
High-Energy Astrophysics in the 2020s and Beyond
With each passing decade, we gain new appreciation for the dynamic, connected, and often violent nature of the Universe. This reality necessarily places the study of high-energy processes at the veryExpand
Current status of the ComPair silicon tracker
AMEGO is a combined Compton and pair-production telescope designed to survey the sky from ∼ 200 keV to > 10 GeV. The prototype, known as ComPair, will undergo beam tests in 2021 and a short-durationExpand
The force-free dipole magnetosphere in nonlinear electrodynamics
Quantum electrodynamics (QED) effects may be included in physical processes of magnetar and pulsar magnetospheres with strong magnetic fields. Involving the quantum corrections, the MaxwellExpand
Hard X-ray polarimetry—an overview of the method, science drivers, and recent findings
The last decade has seen a leapfrog in the interest of X-ray polarimetry with a number of new polarization measurements in hard X-rays from AstroSat , POLAR, GAP, and PoGO+. The measurements provideExpand


Magnetars: the physics behind observations. A review.
A comprehensive overview of magnetar research, in which the observational results are discussed in the light of the most up-to-date theoretical models and their implications address the more fundamental issue of how physics in strong magnetic fields can be constrained by the observations of these unique sources. Expand
Physics of strongly magnetized neutron stars
There has recently been growing evidence for the existence of neutron stars possessing magnetic fields with strengths that exceed the quantum critical field strength of 4.4 × 1013 G, at which theExpand
A Pair Production Telescope for Medium-Energy Gamma-Ray Polarimetry
abstract We describe the science motivation and development of a pair production telescope for medium-energy( 5–200 MeV) gamma-ray polarimetry. Our instrument concept, the Advanced Energetic PairExpand
X-ray spectra from magnetar candidates – II. Resonant cross-sections for electron–photon scattering in the relativistic regime
Recent models of spectral formation in magnetars called renewed attention on electron-photon scattering in the presence of ultra-strong magnetic fields. Investigations presented so far mainlyExpand
Compton scattering in strong magnetic fields: Spin-dependent influences at the cyclotron resonance
The quantum electrodynamical (QED) process of Compton scattering in strong magnetic fields is commonly invoked in atmospheric and inner magnetospheric models of x-ray and soft gamma-ray emission inExpand
Resonant Inverse Compton Scattering Spectra from Highly-magnetized Neutron Stars
Hard, non-thermal, persistent pulsed X-ray emission extending between 10 keV and $\sim 150$ keV has been observed in nearly ten magnetars. For inner-magnetospheric models of such emission, resonantExpand
The advanced energetic pair telescope for gamma-ray polarimetry
  • S. Hunter
  • Engineering, Physics
  • Astronomical Telescopes + Instrumentation
  • 2018
The Advanced Energetic Pair Telescope (AdEPT), a future NASA/GSFC MIDEX mission, is being developed to perform high-sensitivity medium-energy (5–200 MeV) astronomy and revolutionary gamma-rayExpand
Persistent activity of magnetars is associated with electric discharge that continually injects relativistic particles into the magnetosphere. Large active magnetic loops around magnetars must beExpand
Cooling Rates for Relativistic Electrons Undergoing Compton Scattering in Strong Magnetic Fields
For inner magnetospheric models of hard X-ray and gamma-ray emission in high-field pulsars and magnetars, resonant Compton upscattering is anticipated to be the most efficient process for generatingExpand
Resonant Compton upscattering in anomalous X-ray pulsars
Abstract A significant new development in the study of Anomalous X-ray Pulsars (AXPs) has been the recent discovery by INTEGRAL and RXTE of flat, hard X-ray components in three AXPs. TheseExpand