A triple-star channel with two common envelope evolution phases produces merging black hole binaries with positive average χ_eff and a tail of negative values.
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Anisotropic quenching is detected at the highest redshift yet and linked to preprocessing dominating over intrahalo effects by ~20% along the major axis in a delay-then-rapid quenching model informed by cluster accretion histories.
Red quasars are intrinsically X-ray weak with low alpha_OX values, tracing a distinct evolutionary stage of suppressed black hole accretion relative to stellar mass growth.
X-ray timing and spectral analysis of ASKAP J174508.9-505149 detects matching periodicity and features consistent with an accreting magnetic CV.
VLBA multi-frequency imaging reveals a relativistic, well-collimated jet of ~745 pc in a z=3.4 super-Eddington radio-loud quasar, distinct from low-redshift analogues.
HE 1237-2252 exhibits a changing-look event driven by intrinsic accretion-rate variations, revealing a two-component broad-line region consisting of virialized gas at ~27 light-days and disk emission at larger radii.
Spectra of the western eROSITA bubbles reveal two uniform components at 0.60 keV and 0.21 keV with sub-solar abundances, plus a geometrical model constraining horizontal size to ~6 kpc but leaving vertical extent uncertain.
eROSITA data from solar minimum enables isolation and removal of solar wind charge exchange foreground emission, yielding a less contaminated diffuse soft X-ray sky and demonstrating X-ray mapping of interstellar matter flow.
Higher Eddington ratio AGN exhibit increased [O III] outflow incidence and reduced obscuration, supporting radiative feedback as the regulator.
New X-ray flare detections from M dwarfs combined with literature data yield flare frequency constraints and an upper limit of 0.5-30 Myr on atmospheric loss times for habitable planets orbiting them.
Hydrodynamic simulations of three pairs of jittering jets in a CCSN reproduce the ring-and-bar morphology of SNR G11.2-0.3.
New timing and spectral analysis of EP240309a yields conservative upper limits on the white-dwarf magnetospheric radius of a few times 10^10 cm and detects an rms-flux relation in some TESS sectors.
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