Results 71 to 80 of about 21,739 (292)

Mechanistic Control of C─H Bond Activation and C─C Coupling in Light‐Driven Methane Conversion to C2+ Products over Multifunctional Photocatalysts

open access: yesAdvanced Functional Materials, EarlyView.
Methane photocatalytic activation under mild conditions remains a formidable challenge in the synthesis of solar fuels. In this review, we emphasize the growing importance of multifunctional materials and hybrid systems within a unified mechanistic framework that integrates selective C─H bond activation, formation and control of intermediates, C─C ...
Di Hu   +5 more
wiley   +1 more source

No Evidence for Accretion around the Intermediate-mass Black Hole in Omega Centauri

open access: yesThe Astrophysical Journal
For over a decade, both theoretical predictions and observational studies have suggested that ω Centauri ( ω Cen), the most massive Milky Way globular cluster, might harbor an intermediate-mass black hole (IMBH).
Angiraben D. Mahida   +7 more
doaj   +1 more source

Optically thick winds of very massive stars suppress intermediate-mass black hole formation

open access: yesAstronomy & Astrophysics
Intermediate-mass black holes (IMBHs) are the link between stellar-mass and supermassive black holes. Gravitational waves have started to unveil a population of IMBHs in the ~100–300 M⊙ range. Here, we investigate the formation of IMBHs from non-rotating
Torniamenti Stefano   +5 more
doaj   +1 more source

Partial tidal disruption events by intermediate-mass black holes in supermassive and intermediate-mass black hole binaries

open access: yesMonthly Notices of the Royal Astronomical Society
ABSTRACT In the centres of galaxies, stars that orbit supermassive black hole binaries (SMBHBs) can undergo tidal disruptions due to the Lidov–Kozai mechanism. Nevertheless, most previous researches have predominantly focused on full tidal disruption events (FTDEs). In this study, we employ N-body simulations to investigate partial tidal
Xiao-Jun Wu   +3 more
openaire   +2 more sources

Where are the Intermediate Mass Black Holes?

open access: yes, 2019
Science white paper #196 submitted to the Astro2020 Decadal ...
Bellovary, Jillian   +9 more
openaire   +2 more sources

Initial mass function of intermediate-mass black hole seeds [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2014
MNRAS, in press.
Ferrara, A.   +3 more
openaire   +4 more sources

Halide Perovskite Integrated Photovoltaic Cathodes Incorporating Pt on ZIF‐8‐Derived Carbon for Solar Hydrogen Production

open access: yesAdvanced Functional Materials, EarlyView.
A low‐Pt catalyst supported on zeolitic imidazolate framework (ZIF‐8)‐derived porous carbon and graphite is integrated with a halide perovskite photovoltaic, yielding cathodes that achieve a high photocurrent density (∼20 mA cm−2) under simulated sunlight and exhibit remarkable stability in acidic media over several days, thereby demonstrating a ...
Na Yeong Oh   +12 more
wiley   +1 more source

Finding Faint Intermediate-Mass Black Holes in the Radio Band [PDF]

open access: yesAstrophysics and Space Science, 2005
We discuss the prospects for detecting faint intermediate-mass black holes, such as those predicted to exist in the cores of globular clusters and dwarf spheroidal galaxies. We briefly summarize the difficulties of stellar dynamical searches, then show that recently discovered relations between black hole mass, X-ray luminosity and radio luminosity ...
Maccarone, T. J.   +2 more
openaire   +2 more sources

Bismuth‐Based Photocatalysts for Water Remediation: Design Strategies, Mechanisms, and Challenges

open access: yesAdvanced Functional Materials, EarlyView.
This review highlights representative design strategies for bismuth‐based semiconductor photocatalysts in solar‐driven water purification. Emphasis is placed on electronic structure regulation, oxygen‐vacancy engineering, and interfacial coupling to enable efficient full‐spectrum light utilization, improved charge separation, and selective oxidation in
Shan Liu   +9 more
wiley   +1 more source

Which Globular Clusters Contain Intermediate‐Mass Black Holes? [PDF]

open access: yesThe Astrophysical Journal, 2005
13 pages, 3 figures, Accepted ofr publication in ApJ (scheduled for February 2005)
Baumgardt, Holger   +2 more
openaire   +4 more sources

Home - About - Disclaimer - Privacy