11 papers
Physics of 1 keV line in X-ray binaries
Priyanka Chakraborty, Gary Ferland, Andrew Fabian +5
X-ray binaries (XRBs) often exhibit spectral residuals in the 0.5 to 2 keV range, known as the ``1 keV residual/1 keV feature", with variable centroid and intensity across differen…
Unveiling the Cosmic Chemistry II: "Direct" -based metallicity of galaxies at 3 10 with JWST/NIRSpec
Priyanka Chakraborty, Arnab Sarkar, Randall Smith +10
We report the detection of the [O III] auroral line in 42 galaxies within the redshift range of . These galaxies were selected from publicly available JWST data release…
Departures from Standard Disk Predictions in Intensive Ground-Based Monitoring of Three AGN
Diego Gonzalez-Buitrago, Aaron J. Barth, Rick Edelson +42
We present ground-based, multi-band light curves of the AGN Mrk~509, NGC\,4151, and NGC\,4593 obtained contemporaneously with \sw\, monitoring. We measure cross-correlation lags re…
The 2025 Release of Cloudy
Chamani M. Gunasekera, Peter A. M. van Hoof, Maryam Dehghanian +6
We present the 2025 release of the spectral synthesis code Cloudy, highlighting significant enhancements to the scope and accuracy of the physics which have been made since the pre…
Cloudy and the High-Resolution Microcalorimeter Revolution: Optical, UV, and X-ray Spectra of One-electron Systems
Chamani M. Gunasekera, Peter A. M. van Hoof, Marios Chatzikos +1
With the launch of the XRISM microcalorimeter mission, space-based X-ray observations will achieve a record spectral resolving power of 1200. With this resolving…
JADES -- The small blue bump in GN-z11: insights into the nuclear region of a galaxy at z=10.6
Xihan Ji, Roberto Maiolino, Gary Ferland +14
We report the detection of continuum excess in the rest-frame UV between 3000 Ã and 3550 Ã in the JWST/NIRSpec spectrum of GN-z11, a luminous galaxy . The shape of the co…