Results 91 to 100 of about 47,708 (236)
First M87 Event Horizon Telescope Results. VII. Polarization of the Ring
The Astrophysical Journal Letters, 2021 In 2017 April, the Event Horizon Telescope (EHT) observed the near-horizon region around the supermassive black hole at the core of the M87 galaxy. These 1.3 mm wavelength observations revealed a compact asymmetric ring-like source morphology.
The Event Horizon Telescope Collaboration +240 more
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The Effects of Carbonate Precipitation on the Physical Properties of Basalt
AGU Advances, Volume 7, Issue 2, April 2026.Abstract To avoid the negative consequences of climate change, there is an urgent need to remove carbon dioxide from the atmosphere. Carbon mineralization—the conversion of injected CO2 into stable carbonate minerals—offers a promising pathway for large‐scale, permanent geologic storage. While projects such as CarbFix have demonstrated its feasibility,
Jonathan Simpson +4 more
wiley +1 more source
XRISM Reveals a Remnant Torus in the Low-luminosity AGN M81*
The Astrophysical Journal LettersUp to 40% of galaxies in the local Universe host a low-luminosity active galactic nucleus (LLAGN), making it vital to understand this mode of black hole accretion. However, the presence or absence of Seyfert-like geometries—an accretion disk close to the
Jon M. Miller +12 more
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The Astrophysical Journal, 2023 The early-type galaxy NGC 5195 (alternatively known as M51b) possesses extended gas features detected in the multiwavelength, postulated to be associated with previous activities of the central supermassive black hole.
Xiaoyu Xu, Junfeng Wang
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The Amazon River‐Breeze Circulation Limits Detection of Aerosol‐Cloud Interactions in Warm Clouds
AGU Advances, Volume 7, Issue 2, April 2026.Abstract Increased aerosol concentrations can brighten low‐level clouds and extend their lifetimes, but aerosol–cloud interactions (ACI) remain highly uncertain and difficult to quantify. We show that part of this uncertainty is caused by topographical influences on clouds, that is, those arising from land–water contrasts.
Matthew W. Christensen +7 more
wiley +1 more source
Probing the High-frequency Variability of NGC 5044: The Key to Active Galactic Nucleus Feedback
The Astrophysical JournalThe active galactic nucleus (AGN) feeding and feedback process in the centers of galaxy clusters and groups is still not well understood. NGC 5044 is the ideal system in which to study AGN feedback. It hosts the largest known reservoir of cold gas in any
Gerrit Schellenberger +12 more
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Detection of a ∼0.1c Radio Knot in M81* Associated with a Moderate X-Ray Flare
The Astrophysical Journal, 2023 Through very long baseline interferometry observations of one of the closest low-luminosity active galactic nuclei, M81*, at multiple frequencies of 8.8, 22, and 44 GHz, a bright discrete knot with an unusual low apparent speed ∼0.1 c was detected ...
Xuezheng Wang +6 more
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Emergent Freestanding Complex Oxide Membranes for Multifunctional Applications
Advanced Materials, Volume 38, Issue 16, 17 March 2026.This review surveys freestanding oxide membranes and covers fabrication and three pathways for studies and devices: strain‐free and strained membranes, and van der Waals‐integrated heterostructures. We show how coupled oxide responses map onto these routes and cross‐couple to expand behaviors.
Baowen Li +6 more
wiley +1 more source
HST/WFPC2 IMAGING OF THE CIRCUMNUCLEAR STRUCTURE OF LOW-LUMINOSITY ACTIVE GALACTIC NUCLEI. I. DATA AND NUCLEAR MORPHOLOGY [PDF]
, 2007 In several studies of low-luminosity active galactic nuclei (LLAGNs), we have characterized the properties of the stellar populations in LINERs and LINER/H ii transition objects (TOs).
R. G. Delgado +3 more
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The Astrophysical JournalFeedback from black-hole-powered jets has been invoked in many cosmological simulations to regulate star formation and quench galaxies. Despite this, observational evidence of how jets might be able to affect their hosts remains scarce, especially for ...
Olga Borodina +8 more
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