JWST spectra of six z=5-9 galaxies show low-ionization covering fractions of 0.2-0.9 and diverse kinematics including blueshifted outflows, indicating heterogeneous multiphase ISM.
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24 Pith papers cite this work, alongside 1,970 external citations. Polarity classification is still indexing.
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CHIBI is a new hierarchical Bayesian method for multifrequency synthesis radio imaging based on synchrotron spectral parametrization, demonstrated on VLBA MOJAVE data and simulated EHT observations of M87*.
Self-regulating AGN jets in MHD simulations of cool-core clusters yield realistic FRI radio morphologies viewed along the jet axis and account for frequency-independent lobe extents via 1-50 μG fields allowing both young and old electrons to radiate.
MACSJ0417’s giant radio halo shows spectral steepening and radio–X-ray correlation consistent with turbulence from a 6:1 off-axis merger that preserved the cool core; pure hadronic models are energetically excluded.
Self-consistent equipartition equations that couple self-absorption, hot-proton, and out-of-equipartition corrections raise inferred energies of synchrotron outflows by a factor of ~5 relative to prior independent treatments.
Molecular and atomic gas at velocities near -32 and -55 km/s shows spatial correspondence with the TeV gamma-ray shell around Westerlund 1, supporting hadronic cosmic-ray production with total proton energy approximately 6 x 10^49 erg.
Discovery of extended GeV gamma-ray emission from AFGL 490, with the protostellar jet identified as the likely particle accelerator rather than stellar winds.
Ion injection at perpendicular shocks requires 3D geometry to capture the porosity of downstream magnetic turbulence that lets particles return upstream and gain energy.
Derives B*(d) and N*(d) for AGN jet cores from self-absorbed synchrotron emission model with power-law assumptions on Doppler factor, Lorentz factor, B, and N versus jet width d.
Presents ultra-low frequency spectral index maps for 22 bright extended radio galaxies showing indices of ~0.5 near cores rising to >1.0 in lobes for FR I sources and 0.5-0.9 in FR II hotspots.
A self-consistent multi-zone kinetic model reproduces SN 1006's spectrum and morphology, finding ~20% CR acceleration efficiency in quasi-parallel shocks, <1% in quasi-perpendicular shocks, and predominantly leptonic gamma-ray emission.
Reconnection injects suprathermal protons during cosmological magnetogenesis yielding a ~10^{-7} nonthermal energy fraction that provides only a minor seed for later shock acceleration.
Simulations demonstrate non-monotonic guide-field regulation of reconnection efficiency via balance between drift-kink suppression and tearing-mode hindrance in 3D relativistic current sheets.
Derives and validates via PIC simulations a scaling law for nonthermal spectral tails in mildly to strongly magnetized turbulent plasmas, with application to black-hole coronae.
A toy model of reverse shocks in novae predicts GeV gamma rays near optical peak and potential TeV emission later, consistent with Fermi observations under an empirically thin post-shock layer.
Calibrated AGN disk-wind models contribute ≲5% to the CGB above 10 GeV and ≲10% to the CNB at 100 TeV and are unlikely to dominate either background.
Stronger radiation environments produce more massive, hotter protostellar discs whose fragments are large and disruptive rather than planetary-mass.
Fermi-LAT data show Vela Jr GeV emission matches the H.E.S.S. shell template with index 1.77, and a hybrid model statistically outperforms pure leptonic for the broadband SED.
PIC-motivated acceleration models for GRB afterglows predict a GeV-band synchrotron cutoff in low-density short GRBs that current Fermi-LAT data cannot distinguish from the Bohm limit but future observations could.
A review summarizing current challenges in radio observations of supernova remnants and the expected scientific gains from SKA-era instruments.
A review of ML models for SEP prediction that compares architectures, datasets, inputs and outputs while recommending good practices for future work.
Review chapter summarizing the importance of small-scale galactic magnetic fields and proposing SKA observation strategies.
citing papers explorer
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JWST absorption line spectroscopy with SPURS: ISM covering fractions and kinematics in individual galaxies at $z=5-9$
JWST spectra of six z=5-9 galaxies show low-ionization covering fractions of 0.2-0.9 and diverse kinematics including blueshifted outflows, indicating heterogeneous multiphase ISM.
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Multifrequency Synthesis via CHIBI: Colorful Hierarchical Interferometric Bayesian Imaging
CHIBI is a new hierarchical Bayesian method for multifrequency synthesis radio imaging based on synchrotron spectral parametrization, demonstrated on VLBA MOJAVE data and simulated EHT observations of M87*.
-
Simulating realistic radio morphologies of Fanaroff-Riley I jets in a self-regulating cool-core cluster
Self-regulating AGN jets in MHD simulations of cool-core clusters yield realistic FRI radio morphologies viewed along the jet axis and account for frequency-independent lobe extents via 1-50 μG fields allowing both young and old electrons to radiate.
-
Multi-Wavelength Signatures of a Giant Cometary Radio Halo in MACSJ0417-1154
MACSJ0417’s giant radio halo shows spectral steepening and radio–X-ray correlation consistent with turbulence from a 6:1 off-axis merger that preserved the cool core; pure hadronic models are energetically excluded.
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A Self-Consistent Framework for Synchrotron Equipartition Analysis
Self-consistent equipartition equations that couple self-absorption, hot-proton, and out-of-equipartition corrections raise inferred energies of synchrotron outflows by a factor of ~5 relative to prior independent treatments.
-
Discovery of Molecular and Atomic Gas associated with HESS J1646-458 (Westerlund 1): Spatial TeV Gamma-Ray and Interstellar Proton Correspondence
Molecular and atomic gas at velocities near -32 and -55 km/s shows spatial correspondence with the TeV gamma-ray shell around Westerlund 1, supporting hadronic cosmic-ray production with total proton energy approximately 6 x 10^49 erg.
-
GeV {\gamma}-ray emission in the low-mass star-forming region AFGL 490
Discovery of extended GeV gamma-ray emission from AFGL 490, with the protostellar jet identified as the likely particle accelerator rather than stellar winds.
-
The role of three-dimensional effects on ion injection and acceleration in perpendicular shocks
Ion injection at perpendicular shocks requires 3D geometry to capture the porosity of downstream magnetic turbulence that lets particles return upstream and gain energy.
-
Magnetic field and plasma number density from radio and millimeter core measurements in AGN jets
Derives B*(d) and N*(d) for AGN jet cores from self-absorbed synchrotron emission model with power-law assumptions on Doppler factor, Lorentz factor, B, and N versus jet width d.
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The ultra low-frequency spectral properties of bright extended radio galaxies in the 3CRR catalogue
Presents ultra-low frequency spectral index maps for 22 bright extended radio galaxies showing indices of ~0.5 near cores rising to >1.0 in lobes for FR I sources and 0.5-0.9 in FR II hotspots.
-
SN 1006: A Cosmic Laboratory for Investigating Shock Acceleration Physics
A self-consistent multi-zone kinetic model reproduces SN 1006's spectrum and morphology, finding ~20% CR acceleration efficiency in quasi-parallel shocks, <1% in quasi-perpendicular shocks, and predominantly leptonic gamma-ray emission.
-
Reconnection-Driven Injection and Stochastic Reacceleration during Cosmological Magnetogenesis
Reconnection injects suprathermal protons during cosmological magnetogenesis yielding a ~10^{-7} nonthermal energy fraction that provides only a minor seed for later shock acceleration.
-
Guide-Field-mediated Multiscale Instabilities in Relativistic Reconnection
Simulations demonstrate non-monotonic guide-field regulation of reconnection efficiency via balance between drift-kink suppression and tearing-mode hindrance in 3D relativistic current sheets.
-
On The Nonthermal Power Laws In Magnetized Turbulent Plasmas
Derives and validates via PIC simulations a scaling law for nonthermal spectral tails in mildly to strongly magnetized turbulent plasmas, with application to black-hole coronae.
-
A Unified Model for Shock Interaction and $\gamma$-Ray Emission in Classical Novae
A toy model of reverse shocks in novae predicts GeV gamma rays near optical peak and potential TeV emission later, consistent with Fermi observations under an empirically thin post-shock layer.
-
Revisiting Disk Winds in Active Galactic Nuclei as an Origin of Cosmic Gamma-ray and Neutrino Backgrounds
Calibrated AGN disk-wind models contribute ≲5% to the CGB above 10 GeV and ≲10% to the CNB at 100 TeV and are unlikely to dominate either background.
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The Impact of Radiation Environment on the Evolution and Fragmentation of Protostellar Discs
Stronger radiation environments produce more massive, hotter protostellar discs whose fragments are large and disruptive rather than planetary-mass.
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GeV gamma-ray emission in the field of the shell-type supernova remnant Vela Jr revisited
Fermi-LAT data show Vela Jr GeV emission matches the H.E.S.S. shell template with index 1.77, and a hybrid model statistically outperforms pure leptonic for the broadband SED.
-
Maximum Energy of Particles Accelerated in Gamma-Ray Burst Afterglow Shocks
PIC-motivated acceleration models for GRB afterglows predict a GeV-band synchrotron cutoff in low-density short GRBs that current Fermi-LAT data cannot distinguish from the Bohm limit but future observations could.
-
Supernova remnants in the new radio astronomy era
A review summarizing current challenges in radio observations of supernova remnants and the expected scientific gains from SKA-era instruments.
-
Review of Machine Learning Models for Solar Energetic Particle Prediction
A review of ML models for SEP prediction that compares architectures, datasets, inputs and outputs while recommending good practices for future work.
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Small-scale Magnetic Fields in the Milky Way and Nearby Galaxies
Review chapter summarizing the importance of small-scale galactic magnetic fields and proposing SKA observation strategies.
- Time-dependent cosmic-ray escape from wind bubbles: hard spectra formation
- Counterintuitive Magnetic Connectivity and Energetic Particle Flux Differences among Nearby Spacecraft During the 2023 February 24 Solar Energetic Particle Event