Tootfinder

An Arkansas man was detained for a month by US Immigration and Customs Enforcement (Ice)
after authorities mistook his bottle of perfume for opium❗️
Kapil Raghu, an Indian national married to an American woman and working towards American citizenship,
was detained on 3 May after police officers in Benton, a suburb of Little Rock, pulled him over for having a non-moving traffic violation, according to his attorney, Mike Laux.
⚠️ During the traffic stop, police found a s…

Marie made cheddar garlic muffins, egg and bacon, tea and coffee. Weekend was soccer watch (we lost), hike, drag show with friends. Tonight will be Arkham Horror game! #TogetherBreakfast
https://photos.app.goo.gl/RaE7gz5LCVzMKSw19

Formation of protostars and the launching of stellar core outflows with moving-mesh radiation non-ideal magnetohydrodynamics
Alexander C. Mayer, R\"udiger Pakmor, Thorsten Naab, Oliver Zier, Alexei V. Ivlev, Tommaso Grassi, Paola Caselli, Volker Springel
https://arxiv.org/abs/2510.12620

Formation of protostars and the launching of stellar core outflows with moving-mesh radiation non-ideal magnetohydrodynamics
We present an implementation of radiative transfer with flux-limited diffusion (FLD) for the moving-mesh code {\small AREPO} and use the method in a physical model for the formation of protostars with non-ideal radiation-magnetohydrodynamics (RMHD). We follow previous work in splitting the additional terms to the hydrodynamical equations arising from the inclusion of radiation into terms to be integrated explicitly and implicitly, as the diffusion and coupling terms would impose very restrictiv…

Lower bounds for faithful linear representations of subgroups of the mapping class group
Thiago Brevidelli
https://arxiv.org/abs/2510.12591 https://arxiv.o…

Lower bounds for faithful linear representations of subgroups of the mapping class group
Recently, Korkmaz established the lower bound of $3g - 2$ for the dimension of a faithful representation of the mapping class group of an orientable surface of genus $g \ge 3$. We raise this bound to $4g - 3$ in the setting of surfaces of genus $g \ge 7$. A new ingredient is a finer study of the commutation relations in $\operatorname{PMod}(Σ)$. We use the relations arising from a certain pants decomposition of $Σ_g$ to show that any representation of dimension $\le 4g - 4$ is forced to kill …

Spectroscopic Reverberation Mapping for SARM: The Case of Mrk 1048 and Mrk 618
Shivangi Pandey, Suvendu Rakshit, S. Muneer, Jincen Jose, Ashutosh Tomar, Yan-Rong Li, Jian-Min Wang, C. S. Stalin, Jong-Hak Woo, Romain G. Petrov, James Leftley, Sebastian F. H\"onig, Amit Kumar Mandal, Tushar Ubarhande, Shu Wang, Michael Brotherton, Archana Gupta
https://

Spectroscopic Reverberation Mapping for SARM: The Case of Mrk 1048 and Mrk 618
Robust extragalactic distance measurements are crucial for resolving the persistent discrepancy in the value of the Hubble constant (H$_0$)). Active Galactic Nuclei (AGNs), through their compact and variable broad-line regions (BLRs), enable the determination of geometric distances when reverberation mapping (RM) is combined with spectroastrometry(SA). We report results from a spectroscopic RM campaign (October 2022 to March 2023) targeting two narrow-line Seyfert 1 galaxies, Mrk 1048 and Mrk 6…

The DST switch has two advantages: moving an hour of summer daylight we'd normally sleep through into our evenings, and reducing the variation in the time of sunrise (avoid dark mornings).
A 1-hour adjustment makes quite a big difference in middle latitudes. Too far south & the natural difference is too small; to far north it's too big for 1 hr to matter. South of 40°N and north of 60°N the argument is weaker. See the graph: at 40° the difference in sunrise time is 2h52, at…

Mapping gene expression dynamics to developmental phenotypes with information entropy analysis
Ben Ansbacher, Malachy Guzman, Jordi Garcia-Ojalvo, Arjendu K Pattanayak
https://arxiv.org/abs/2510.04101 …

Mapping gene expression dynamics to developmental phenotypes with information entropy analysis
The development of multicellular organisms entails a deep connection between time-dependent biochemical processes taking place at the subcellular level, and the resulting macroscopic phenotypes that arise in populations of up to trillions of cells. A statistical mechanics of developmental processes would help to understand how microscopic genotypes map onto macroscopic phenotypes, a general goal across biology. Here we follow this approach, hypothesizing that development should be understood as…

Geometric Interpretation of the Redshift Evolution of H_0(z)
Seokcheon Lee
https://arxiv.org/abs/2511.07454 https://arxiv.org/pdf/2511.07454 https://arxiv.org/html/2511.07454
arXiv:2511.07454v1 Announce Type: new
Abstract: Recent analyses of the Master Type Ia supernova (SN Ia) sample have revealed a mild redshift dependence in the inferred local Hubble parameter, often expressed as tilde{H}_0(z) = H_0 (1 z)^{-\alpha}, where \alpha quantifies possible departures from the standard cosmological time dilation relation. In this work, we show that such an empirical scaling can be interpreted as a purely geometric effect arising from a small, gauge-dependent normalization of cosmic time within the Robertson-Walker metric. This interpretation naturally unifies the observed redshift evolution of tilde{H}_0(z) and the corresponding deviation in SN Ia light-curve durations under a single geometric time-normalization framework. We demonstrate that this mapping leaves all background distances--linked to the Hubble radius in the general-relativistic frame--unchanged, while the apparent evolution in SN Ia luminosity distances arises from the redshift dependence of the Chandrasekhar mass. The result provides a unified and observationally consistent explanation of the mild Hubble-tension trend as a manifestation of the geometric structure of cosmic time rather than a modification of the expansion dynamics.
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Interplay of Fidelity and Diversity in the Evolution of the Genetic Code
Yudam Seo, Tsvi Tlusty, Junghyo Jo
https://arxiv.org/abs/2510.10871 https://arxiv.…

Interplay of Fidelity and Diversity in the Evolution of the Genetic Code
The origin and organizing principles of the genetic code remain fundamental puzzles in life science. The vanishingly low probability of the natural codon-to-amino acid mapping arising by chance has spurred the hypothesis that its structure is a solution optimized for robustness against mutations and translational errors. For the construction of effective molecular machines, the dictionary of encoded amino acids must also be diverse enough in physicochemical features. Here, we examine whether th…

Comment on the "Electric Power Generation from Earth's Rotation through its Own Magnetic Field"
Iver H. Brevik, Moshe M. Chaichian, Mikhail I. Katsnelson
https://arxiv.org/abs/2510.00066 …

Comment on the "Electric Power Generation from Earth's Rotation through its Own Magnetic Field"
The suggestion made by C. F. Chyba and K. P. Hand about electric power generation from Earth's rotation through its own magnetic field is intriguing [1, 2]. Here, we reanalyze the theoretical arguments for their conclusion, especially those presented in [1]. The model that they consider, is a magnetic cylindrical shell moving with low velocity $v$ in the $y$ direction at a right angle to the direction of the Earth's magnetic field $B_\infty$. We first focus on one of the electromagnetic boundar…