Tootfinder

From DeSmog International
Mark Carney these days could learn a lot from Mark Carney ten years ago
https://www.desmog.com/2025/09/02/mark-carneys-climate-warning-from-2015-and-the-perils-of-pragmatism/

Mark Carney’s Climate Warning from 2015 and the Perils of Pragmatism
Canada’s PM once cautioned that most fossil fuel reserves will become unburnable. What happened?

A colossal dielectric response of HfxZr1-xO2 nanoparticles
Oleksandr S. Pylypchuk, Victor V. Vainberg, Vladimir N. Poroshin, Oksana V. Leshchenko, Victor N. Pavlikov, Irina V. Kondakova, Serhii E. Ivanchenko, Lesya P. Yurchenko, Lesya Demchenko, Anna O. Diachenko, Myroslav V. Karpets, Mikhail P. Trubitsyn, Eugene A. Eliseev, Anna N. Morozovska
https://

A colossal dielectric response of HfxZr1-xO2 nanoparticles
We reveal a colossal dielectric response of small (5 - 10 nm) oxygen-deficient HfxZr1-xO2 nanoparticles (x = 1 - 0.4), prepared by the solid-state organonitrate synthesis. The effective dielectric permittivity of the pressed HfxZr1-xO2 nanopowders has a pronounced maximum at 38 - 88 C, which shape can be fitted by the Curie-Weiss type dependence modified for the diffuse ferroelectric-paraelectric phase transition. The maximal value of the dielectric permittivity increases from 1.5*10^3 (for x =…

Globular Clusters in the Galaxy Cluster MACS0416 at z = 0.397
Jessica M. Berkheimer, Rogier A. Windhorst, William E. Harris, Anton M. Koekemoer, Timothy Carleton, Seth H. Cohen, Rolf A. Jansen, Dan Coe, Jose Diego, Christopher J. Conselice, Simon P. Driver, Brenda L. Frye, Norman A. Grogin, Kate Hartman, Tyler R. Hinrichs, Benne W. Holwerda, Patrick S. Kamieneski, Kaitlyn E. Keatley, William C. Keel, Ray A. Lucas, Madeline A. Marshall, Mario Nonino, Nor Pirzkal, Massimo Ricotti, Clayto…

Globular Clusters in the Galaxy Cluster MACS0416 at z = 0.397
We present a photometric analysis of globular clusters (GCs) in the massive galaxy cluster MACS J0416.1-2403 (z = 0.397) using deep JWST/NIRCam imaging from the PEARLS program. PSF photometry in the F090W, F115W, F150W, and F200W filters was performed with DAOPHOT, yielding a catalog of 2,971 unresolved, point-like sources consistent with a GC population. Artificial star tests indicate 50% completeness at F200W = 30.63 AB mag and 80% completeness at F200W = 30.36 AB mag. Color-magnitude diagram…

Young Americans are increasingly turning to BNPL loans from Affirm and others, as getting approved for credit cards becomes harder in today's economic climate (Angel Au-Yeung/Wall Street Journal)
https://www.

Polynomial Closed Form Model for Ultra-Wideband Transmission Systems
Pierluigi Poggiolini, Yanchao Jiang, Yifeng Gao, Fabrizio Forghieri
https://arxiv.org/abs/2508.21563 https:/…

Polynomial Closed Form Model for Ultra-Wideband Transmission Systems
Ultrafast and accurate physical layer models are essential for designing, optimizing and managing ultra-wideband optical transmission systems. We present a closed-form GN/EGN model, named Polynomial Closed-Form Model (PCFM), improving reliability, accuracy, and generality. The key to deriving PCFM is expressing the spatial power profile of each channel along a span as a polynomial. Then, under reasonable approximations, the integral calculation can be carried out analytically, for any chosen de…

An inherent regularization approach to parameter-free preconditioning for nearly incompressible linear poroelasticity and elasticity
Weizhang Huang, Zhuoran Wang
https://arxiv.org/abs/2507.22334

An inherent regularization approach to parameter-free preconditioning for nearly incompressible linear poroelasticity and elasticity
An inherent regularization strategy and block Schur complement preconditioning are studied for linear poroelasticity problems discretized using the lowest-order weak Galerkin FEM in space and the implicit Euler scheme in time. At each time step, the resulting saddle point system becomes nearly singular in the locking regime, where the solid is nearly incompressible. This near-singularity stems from the leading block, which corresponds to a linear elasticity system. To enable efficient iterative…

Foreground Extinction to Extended Celestial Objects - I. New Extinction Maps
G. A. Gontcharov, A. A. Marchuk, S. S. Savchenko, A. V. Mosenkov, V. B. Il'in, D. M. Poliakov, A. A. Smirnov, H. Krayani
https://arxiv.org/abs/2510.02600

Foreground Extinction to Extended Celestial Objects - I. New Extinction Maps
We present a new two-dimensional (2D) map of total Galactic extinction, $A_\mathrm{V}$, across the entire dust half-layer from the Sun to extragalactic space for Galactic latitudes $|b|>13$ deg, as well as a three-dimensional (3D) map of $A_\mathrm{V}$ within 2~kpc of the Sun. These maps are based on $A_\mathrm{V}$ and distance estimates derived from a dataset, which utilizes {\it Gaia} Data Release 3 parallaxes and multi-band photometry for nearly 100 million dwarf stars. We apply ou…

J-PLUS: Understanding outlier white dwarfs in the third data release via dimensionality reduction
C. L\'opez-Sanjuan, P. -E. Tremblay, A. del Pino, H. Dom\'inguez S\'anchez, H. V\'azquez Rami\'o, A. Ederoclite, A. J. Cenarro, A. Mar\'in-Franch, B. Anguiano, T. Civera, P. Cruz, J. A. Fern\'andez-Ontiveros, F. M. Jim\'enez-Esteban, A. Rebassa-Mansergas, J. Vega-Ferrero, J. Alcaniz, R. E. Angulo, D. Crist\'obal-Hornillos, R. A. Dupke, C. Hern\'andez…

J-PLUS: Understanding outlier white dwarfs in the third data release via dimensionality reduction
We present the white dwarf catalog derived from the third data release of the Javalambre Photometric Local Universe Survey (J-PLUS DR3), which covers 3284 deg2 using 12 optical filters. A particular focus is given to the classification of outlier sources. We applied a Bayesian fitting process to the 12-band J-PLUS photometry of white dwarf candidates from Gaia EDR3. The derived parameters were effective temperature, surface gravity, and parallax. We used theoretical models from H- and He-domina…

The Emergence and Ionizing Feedback of Pop III.1 Stars as Progenitors for Supermassive Black Holes
Mahsa Sanati, Jonathan C. Tan, Julien Devriendt, Adrianne Slyz, Sergio Martin-Alvarez, Matteo la Torre, Benjamin Keller, Maya A. Petkova, Pierluigi Monaco, Vieri Cammelli, Jasbir Singh, Matthew Hayes
https://arxiv.org/abs/2507.23004

The Emergence and Ionizing Feedback of Pop III.1 Stars as Progenitors for Supermassive Black Holes
Recent observations by JWST reveal an unexpectedly abundant population of rapidly growing supermassive black holes (SMBHs) in the early Universe, underscoring the need for improved models for their origin and growth. Employing new full radiative transfer hydrodynamical simulations of galaxy formation, we investigate the local and intergalactic feedback of SMBH progenitors for the Population III.1 scenario, i.e., efficient formation of supermassive stars from pristine, undisturbed dark matter mi…

Unveiling the Sagittarius Dwarf Spheroidal Galaxy Core with Gaia DR3
Ellie K. H. Toguchi-Tani, Daniel R. Hey, Thomas de Boer, Peter M. Frinchaboy, Daniel Huber
https://arxiv.org/abs/2507.20212

Unveiling the Sagittarius Dwarf Spheroidal Galaxy Core with Gaia DR3
The Sagittarius dwarf spheroidal galaxy provides us with the unique opportunity to study an ongoing Galactic cannibalistic event between our Milky Way Galaxy and a satellite dwarf galaxy. We present the first major membership star catalog of the Sagittarius dwarf core ($\approx$400,000 sources) and Messier 54 ($\approx$2000 sources) with positions, proper motions, and parallaxes from $Gaia$ DR3, supplemented with metallicities from the Apache Point Observatory Galactic Evolution Experiment. We …