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The Onset of a Compton-thick Wind in GX 13+1

01/03/2026 - High-Energy

The X-ray Imaging and Spectroscopy Mission (XRISM) recently reported the discovery of a recurrent Compton-thick accretion disk wind from the neutron star X-ray binary GX 13+1. Many earlier observations have revealed multicomponent disk winds from this system; the wind seen by XRISM was similar but featured a column density 1 order of magnitude higher than…

Giant Outer Transiting Exoplanet Mass (GOT’EM) survey: VII. TOI-6041: A multi-planet system including a warm Neptune exhibiting strong transit-timing variations

01/03/2026 - Exoplanets

We present the characterisation of the TOI-6041 system, a bright (V = 9.84 ± 0.03) G7-type star hosting at least two planets. The inner planet, TOI-6041 b, is a warm Neptune with a radius of 4.55−0.17+0.18 R⊕, initially identified as a single-transit event in TESS photometry. Subsequent observations with TESS and CHEOPS revealed additional transits,…

A JWST Transit of a Jupiter Analog. I. Constraints on the Oblateness of Kepler-167 e

01/03/2026 - Exoplanets

In 2024 October, JWST observed a transit of Kepler-167 e, a Jupiter-analog planet on a 1000+ day orbit. These observations, recorded over a long baseline of nearly 60 hr, were designed to search for signatures of planetary oblateness and/or exomoons comparable to Ganymede. In this first in a series of studies analyzing these data, we…

Mean opacity tables for probing the interior and atmosphere of giant planets

01/03/2026 - Exoplanets

We present new Rosseland and Planck mean opacity tables relevant to the shallow interiors and atmospheres of giant planets. The tables span metallicities from 0.31 to 50 times solar, temperatures from $100 – 6000 rm K$, and pressures from $10^{-6} – 10^{5} rm bar$, thereby covering a wider parameter space than previous data sets. Our…

The MUSCLES Extension for Atmospheric Transmission Spectroscopy: Spectral Energy Distributions for 20 Exoplanet Host Stars that JWST Observed in Cycle 1

01/03/2026 - Exoplanets

Correctly interpreting JWST spectra of close-in exoplanets requires a measurement of the X-ray and ultraviolet light that the planets receive from their host stars. Here, we provide spectral energy distributions (SEDs) covering the range ≍5─1 × 107 Å for 20 transiting exoplanet host stars observed in JWST Cycle 1. The SEDs are constructed out of…

Galactic bars and active galactic nucleus fuelling in the second half of cosmic history

01/03/2026 - Low-Energy

We investigate the role of galactic bars in fuelling and triggering active galactic nuclei (AGN) in disc galaxies up to z ∼ 0.8. We utilised a deep learning model, fine-tuned on Galaxy Zoo volunteer classifications, to identify (strongly and weakly) barred and unbarred disc galaxies in Hyper Suprime-Cam Subaru Strategic Program i-band images. We selected…

Publications