Results 111 to 120 of about 1,324 (259)

Mass Segregation and Transient Formation in Nuclear Stellar Clusters

open access: yesThe Astrophysical Journal
Supermassive black holes at the centers of galaxies occasionally disrupt stars or consume stellar-mass black holes (BHs) that wander too close, producing observable electromagnetic or gravitational wave signals.
Barak Rom, Re’em Sari
doaj   +1 more source

Robust active galactic nucleus and host-galaxy decomposition in optical spectral fitting

open access: yesAstronomy & Astrophysics
Unraveling the growth of supermassive black holes and their connection to host galaxies requires disentangling the active galactic nuclei (AGN) emission from that of the stellar populations in which they are embedded.
Aydar C.   +26 more
doaj   +1 more source

Lipid Nanoparticle Co‐Delivery of mRNA and a Small Molecule Drug for Oral Cancer Chemoimmunotherapy

open access: yesAdvanced Materials, EarlyView.
Co‐encapsulation of p53 mRNA and the small molecule ciclopirox within a lipid nanoparticle yields an all‐in‐one chemoimmunotherapy for oral squamous cell carcinoma. The platform engages caspase‐driven apoptosis in cancer cells while repolarizing tumor‐associated macrophages, achieving tumor reduction in both p53‐susceptible and p53‐resistant models and
Marshall S. Padilla   +15 more
wiley   +1 more source

Field‐Programmed Anisotropy in Magneto‐Piezoelectric Composites for Material‐Encoded Mechanoperception

open access: yesAdvanced Materials, EarlyView.
Field‐programmed anisotropy imparts material‐level intelligence to soft composites. Magnetic torque dynamics drive magneto‐piezoelectric nanowires from random dispersion into deterministic axial alignment. The resulting hierarchical percolation networks confine electromechanical coupling to specific axes and intrinsically decouple superposed force ...
Yubin Kim   +9 more
wiley   +1 more source

Coevolution of Nuclear Star Clusters and Massive Black Holes: Extreme-mass-ratio Inspirals

open access: yesThe Astrophysical Journal
We explore extreme-mass-ratio inspirals (EMRIs) in the coevolution of massive black holes (MBHs) and nuclear star clusters (NSCs), which host diverse stellar populations across a wide range of masses. The dynamics are simulated self-consistently with GNC
Fupeng Zhang, Pau Amaro Seoane
doaj   +1 more source

Weighing stellar - mass black holes with Gaia

open access: yes, 2004
2 pages, a reference ...
Fuchs, B., Bastian, U.
openaire   +2 more sources

Decoupling Activation and Preservation: Architectural Design Principles of Organic Frameworks for Selective Photocatalytic Methane Oxidation

open access: yesAdvanced Materials, EarlyView.
Selective methane (CH4) photooxidation emerges from architectural decoupling of activation and preservation. Programmable organic semiconductor frameworks spatially organize oxidative flux and intermediate residence, separating reaction zones from product domains to synchronize activation strength with stabilization and establish a selective oxidation ...
Minxian Zhang   +5 more
wiley   +1 more source

Exploring the Evolution of a Dwarf Spheroidal Galaxy with SPH Simulations. II. AGN Feedback

open access: yesThe Astrophysical Journal
We investigate active galactic nucleus (AGN) feedback from an intermediate-mass black hole at the center of a dwarf spheroidal galaxy, by performing isolated galaxy simulations using a modified version of the GADGET-3 code. We consider Leo II (PGC 34176)
Roberto Hazenfratz   +3 more
doaj   +1 more source

Operation Limits of Integrated Photo‐Rechargeable Batteries

open access: yesAdvanced Materials, EarlyView.
This study elucidates the operational limitations of integrated photo‐rechargeable batteries. We demonstrate that the photo‐charging process is fundamentally restricted not only by material‐to‐material energy level alignment but also by transient capacitive charge accumulation within the cathode framework.
Byung‐Man Kim   +6 more
wiley   +1 more source

Measuring the Spins of Stellar-Mass Black Holes

open access: yes, 2009
Astro2010 Science White Paper; 8 pages, 2 figures; added two seminal references on measuring black hole spin: Tanaka et al. (1995) and Zhang et al. (1997)
McClintock, Jeffrey E.   +1 more
openaire   +2 more sources

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