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Physics Preprint PDF DOI

A common four-beam geometry reveals altitude-stratified GeV pulses in canonical young pulsars

Paul K. H. Yeung, Takayuki Saito · 2026

Despite the diversity and energy dependence of $\gamma$-ray pulse morphologies in Crab, Vela and Dragonfly, the phaseograms of these three canonical young pulsars can be organised within a single four…

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Mathematics Preprint PDF DOI

Geometric densities and compression radii of knot types

Makoto Ozawa · 2026

We study scale-invariant geometric quantities associated with embedded closed curves in Euclidean three-space, with an emphasis on their behavior under optimization within a fixed knot type. Given a E…

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Physics Preprint PDF DOI

Anisotropy of Satellite Galaxies-I: Contrasting Correlations with Central Galaxy, Host Halo, and Large-Scale Filament Structures

Zhuoming Zhang, Weiguang Cui, Yun Chen, Romeel Dave, Katarina Kraljic · 2026

Using the SIMBA, EAGLE, and IllustrisTNG-100 galaxy formation simulations, we examine the anisotropy of the satellite distribution and its dependencies on central galaxies, host halos, and cosmic fila…

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Physics Preprint PDF DOI

Examination of the $c\bar{c}+n+^{10}$Be bound-state problem within three cluster models based on QCD charmonium-nucleon interactions

Faisal Etminan · 2026

The possible bound state of the $c\bar{c}+n+^{10}$Be system, representing a hypothetical charmonium-nucleus configuration, is investigated. The analysis is conducted within a three-cluster framework, …

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Physics Preprint PDF DOI

On the Difference Between Pulsar Radio Emission Beams from the Two Poles

Xiancong Wu, Hongguang Wang, Hao Tong, Rui Luo, Pengfei Wang, Chengbing Lyu, Hai Lei · 2026

The long-standing assumption of symmetric radio emission beams from the two magnetic poles of pulsars is challenged by observational evidence of asymmetry and underfill. Direct testing of this symmetr…

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Physics Preprint PDF DOI

First Observation of Multiple Very-Near-Earth Reconnection Events During a Single Storm Main Phase

Fekireselassie Beyene, Vassilis Angelopoulos, Christine Gabrielse, Yoshizumi Miyoshi, Iku Shinohara, Shoichiro Yokota, Satoshi Kasahara, Kunihiro Keika, Tomoaki Hori, Yasumasa Kasaba, Yoshiya Kasahara, Ayako Matsuoka, Mariko Teramoto, Kazuhiro Yamamoto · 2026

For the first time, this paper presents three very-near-Earth reconnection (VNERX) events observed within the same 12-hour-long storm main phase. The THEMIS inner probes observed the hallmarks of thre…

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Physics Preprint PDF DOI

Characterizing six seismic solar analogs observed by Kepler, K2, and HERMES

R. A. Garcia, S. Mathur, G. T. Hookway, D. Godoy-Rivera, T. Masseron, J. Betrisey, G. Buldgen, C. Lindsay, T. S. Metcalfe, O. J. Scutt, A. Stokholm, P. G. Beck, O. Benomar, G. R. Davies, A. Jimenez, J. Merc, M. B. Nielsen, E. Panetier, F. Perez Hernandez, L. Borg, S. N. Breton, L. Debacker, A. Escorza, D. H. Grossmann, A. Hamy, B. Liagre, M. N. Lund, S. Mathis, D.B. Palakkatharappil, A. R. G. Santos, V. Delsanti, L. Gonzalez-Cuesta, V. Fox, N. Proust · 2026

Solar analogs, stars that closely match the fundamental properties of the Sun, provide key benchmarks for testing stellar structure and evolution across different ages and activity levels. Their detai…

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Earth & Environmental Sciences Preprint PDF DOI

Searching for GEMS: Three warm Saturns and a super-Jupiter orbiting four early M-dwarfs

Pranav H. Premnath, Paul Robertson, Shubham Kanodia, Caleb I. Canas, Arvind F. Gupta, Michael Rodruck, Te Han, Henry A. Kobulnicky, Andrea S.J. Lin, Andrew Monson, Libby Allely, Cooper Bailey, Alexina Birkholz, Zack Beagle, Philip Choi, Nez Evans, Mark E. Everett, Anna Fong, S. Nick Justice, Ian Karfs, Sage Santomenna, Elsa Van Dyke, Arissa Williams, Chad F. Bender, William D. Cochran, Scott A. Diddams, Rachel B. Fernandes, Mark R. Giovinazzi, Samuel Halverson, Daniel M. Krolikowski, Suvrath Mahadevan, Michael W. McElwain, Joe P. Ninan, Arpita Roy, Gudmundur Stefansson, Jason T. Wright · 2026

We report the confirmation and characterization of four transiting giant planets orbiting early-M dwarfs discovered by the Searching for Giant Exoplanets around M-dwarf Stars (GEMS) survey: TOI-7189 b…

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Physics Preprint PDF DOI

SPHEREx Ultracool Dwarf spectral Atlas (SUDA): Atmospheric and Fundamental Parameters of Ultracool Dwarfs

Zhijun Tu, Shu Wang, Haomiao Huang, Xiaodian Chen, Jifeng Liu · 2026

We present the SPHEREx Ultracool Dwarf spectral Atlas (SUDA), a homogeneous sample of 1675 ultracool dwarfs with continuous 0.75--5 $\mu$m spectroscopy from SPHEREx QR2. Using the SAND and ATMO2020++ …

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Physics Preprint PDF DOI

A short-period binary OGLE-BLG-ELL-006503 showing slow variations in brightness

S. M. Rucinski · 2026

Analysis of 28 years of OGLE project data for the 0.404 day period binary OGLE BLG ELL-006503 (V1231 Sco) shows a superposition of tidal-interaction variations of about 0.07 magnitude in the I-band on…

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Engineering Preprint PDF DOI

Split over $n$ resource sharing problem: Are fewer capable agents better than many simpler ones?

Karthik Soma, Mohamed S. Talamali, Genki Miyauchi, Giovanni Beltrame, Heiko Hamann, Roderich Gross · 2026

In multi-agent systems, should limited resources be concentrated into a few capable agents or distributed among many simpler ones? This work formulates the split over $n$ resource sharing problem wher…

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Physics Preprint PDF DOI

Light sea-quark flavor asymmetry and angular momentum of the nucleon in a scalar-vector spectator model

Parashmani Thakuria, Madhurjya Lalung, Jayanta Kumar Sarma · 2026

We present a light-front spectator model that describes the proton as an active sea antiquark paired with a composite scalar-vector spectator. Using a spatial profile based on soft-wall AdS/QCD, we fi…

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Physics Preprint PDF DOI

Properties of the Stormtime Plasma Sheet at the Lunar Distance

A. Runov, V. Angelopoulos, A. V. Artemyev, X. An · 2026

The electron fluxes at energies $E>$100\,keV are shown to be vanishing in the quiet time plasma sheet at geocentric distance of 60 Earth's radii (R$_E$) where the Moon traverses the magnetotail. Fluxe…

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Physics Preprint PDF DOI

Environmental dependence of the Mass-Metallicity Star Formation Relations at z=4-10 with JWST

Qiong Li, Christopher J. Conselice, Lewi Westcott, Duncan Austin, Tom Harvey, Nathan Adams, Vadim Rusakov, James Arcidiacono, Caio Moreira Goolsby, Chandana Hegde, Shuqi Fu · 2026

We study how environment affects the mass-metallicity relation (MZR) at $z=4$-$10$ using deep imaging and spectroscopy from the James Webb Space Telescope (JWST). Combining CEERS and JADES, we compile…

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Physics Preprint PDF DOI

Coulomb Effects and Wigner-SU(4) Symmetry in He-3 Charge and Magnetic Properties

Xincheng Lin · 2026

This work studies the non-perturbative Coulomb corrections to the He-3 binding energy, magnetic moment, and charge and magnetic radii in leading-order (LO) Pionless Effective Field Theory (Pionless EF…

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AI & Data Science Preprint PDF DOI

Tail allocation for conformal prediction intervals

Tianying Wang · 2026

We study split-conformal prediction for regression when the reported prediction set must be a single interval, at target marginal coverage $1-\alpha$, where $\alpha$ is the nominal miscoverage level. …

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Mathematics Preprint PDF DOI

Quantitative Analyticity for Lyapunov Exponents of Random Products of Matrices with Explicit Polydiscs and Cauchy Coefficient Bounds

Abdoulaye Thiam · 2026

The top Lyapunov exponent $\lambda_+(A, p)$ of a random product of matrices in $\mathrm{GL}(d, \mathbb{R})$, $d \geq 2$, with simple top spectrum, depends real-analytically on the probability weights …

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Physics Preprint PDF DOI

Constraining the nature of active galactic nuclei through circumgalactic Lya emission at z=2-3

Shiwu Zhang, Zheng Cai, Fabrizio Arrigoni Battaia, Sebastiano Cantalupo, Mingyu Li, Ben Wang, Yuduo Guo, Aura Obreja, Haibin Zhang, Zihao Li, Donghui Quan · 2026

We present a comprehensive analysis of circumgalactic Lya nebulae around 59 unobscured and 26 obscured quasars at z=2-3, observed with the Keck Cosmic Web Imager (KCWI), to constrain the nature of act…

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Physics Preprint PDF DOI

Large amplification of the isospin-dependence of proton emitting source size in radioactive heavy-ion collisions: a signal of n-p correlation

Y. J. Wang, C. K. Tam, Z. G. Xiao, W. G. Lynch, C. Y. Tsang, J. Barney, G. Jhang, J. Estee, M. B. Tsang, R. S. Wang, M. Kaneko, J. W. Lee, J. Park, Z. Chajecki, G. Verde, T. Isobe, M. Kurata-Nishimura, T. Murakami, D. S. Ahn, L. Atar, T. Aumann, H. Baba, K. Boretzky, J. Brzychczyk, G. Cerizza, N. Chiga, N. Fukuda, I. Gasparic, B. Hong, A. Horvat, K. Ieki, N. Inabe, Y. J. Kim, T. Kobayashi, Y. Kondo, P. Lasko, H. S. Lee, Y. Leifels, J. {L}ukasik, J. Manfredi, A. B. McIntosh, P. Morfouace, T. Nakamura, N. Nakatsuka, S. Nishimura, H. Otsu, P. Paw{l}owski, K. Pelczar, D. Rossi, H. Sakurai, C. Santamaria, H. Sato, H. Scheit, R. Shane, Y. Shimizu, H. Simon, A. Snoch, A. Sochocka, T. Sumikama, H. Suzuki, D. Suzuki, H. Takeda, S. Tangwancharoen, H. Toernqvist, Y. Togano, S. J. Yennello, Y. Zhang · 2026

We report proton-proton correlation function measurements in central $^{132}$Sn+$^{124}$Sn and $^{108}$Sn+$^{112}$Sn collisions at 270 MeV/nucleon. The proton emitting source sizes are extracted for t…

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Physics Preprint PDF DOI

Moving-Mesh Simulations of Mini-Common Envelope Ejection in Classical Novae

Nicholas Nelson, Philip Chang · 2026

Although well studied, our understanding of the mass ejection mechanisms of cataclysmic variables remains incomplete. Recent work suggests that binary interaction plays an important role in driving an…

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