A flare in the Seyfert galaxy NGC 3783 shows the Neupert effect—hard X-rays tracking the derivative of soft X-rays—providing the first observational evidence of magnetic reconnection in an AGN corona.
A., Rosner R., Vaiana G
7 Pith papers cite this work, alongside 688 external citations. Polarity classification is still indexing.
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A lens model from Gaia DR3 and HST data combined with a Bayesian test on Chandra observations constrains the X-ray emission origin in lensed quasar J0659 to a 0.020 × 0.010 arcsec ellipse offset 0.014 arcsec from the optical source at 1σ.
Fe Kα lines from accreting black holes are produced mostly outside 10 gravitational radii due to radial ionization gradients, allowing broad profiles without high spin.
A new public relativistic transfer-function model reltrans for X-ray reverberation mapping that fits both spectra and lags to measure black-hole masses.
Compiled slab-geometry Seyfert coronae form a narrow constant-y≈0.77 locus, favouring dominant local coronal dissipation and reduced disc-corona feedback.
General-relativistic ray-tracing shows that non-flat accretion disk geometries systematically bias iron Kα-derived black hole spin, coronal height, and inclination estimates when fit with flat-disk models.
A bias-controlled quasar sample of ~2000 objects demonstrates that the X-ray-to-UV luminosity relation remains constant from redshift 0.7 to 5.
citing papers explorer
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Observation of A Solar Like Magnetic Reconnection Event in an AGN Corona with XRISM
A flare in the Seyfert galaxy NGC 3783 shows the Neupert effect—hard X-rays tracking the derivative of soft X-rays—providing the first observational evidence of magnetic reconnection in an AGN corona.
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Determining the spatial origin of X-ray and optical emission in the $z = 3.1$ strongly lensed radio-quiet quasar GraL J065904.1+162909 to hundreds of parsecs
A lens model from Gaia DR3 and HST data combined with a Bayesian test on Chandra observations constrains the X-ray emission origin in lensed quasar J0659 to a 0.020 × 0.010 arcsec ellipse offset 0.014 arcsec from the optical source at 1σ.
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Simulation-Based Prediction of Black Hole Fe K$\alpha$ Line Profiles
Fe Kα lines from accreting black holes are produced mostly outside 10 gravitational radii due to radial ionization gradients, allowing broad profiles without high spin.
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A public relativistic transfer function model for X-ray reverberation mapping of accreting black holes
A new public relativistic transfer-function model reltrans for X-ray reverberation mapping that fits both spectra and lags to measure black-hole masses.
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A narrow Comptonization locus in Seyfert slab coronae: implications for dominant coronal dissipation and reduced feedback
Compiled slab-geometry Seyfert coronae form a narrow constant-y≈0.77 locus, favouring dominant local coronal dissipation and reduced disc-corona feedback.
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The Effects of Complex Accretion Disk Geometry on Broadened Iron K$\alpha$ Lines
General-relativistic ray-tracing shows that non-flat accretion disk geometries systematically bias iron Kα-derived black hole spin, coronal height, and inclination estimates when fit with flat-disk models.
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The X-ray-to-UV relation does not evolve in homogeneous quasar samples
A bias-controlled quasar sample of ~2000 objects demonstrates that the X-ray-to-UV luminosity relation remains constant from redshift 0.7 to 5.