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Core Scouring Dynamics and Gravitational Wave Consequences: Constraints on Supermassive Black Hole Binary Hardening

C. J. Harris, Kayhan Gültekin, Laura Blecha • The Astrophysical Journal (2026)

We present a multimessenger investigation of supermassive black hole binary (SBHB) hardening by jointly comparing models to the observed stellar mass deficits of nearby core galaxies and to nanohertz gravitational-wave background measuremen...

DOAJ Open Access (DOAJ) DOI: 10.3847/1538-4357/ae9767

Measurement of the Y(1S) pair production cross section and search for resonances decaying to Y(1S)μ+μ− in proton-proton collisions at s=13TeV

A.M. Sirunyan, A. Tumasyan, W. Adam, F. Ambrogi et al. • Physics Letters B (2020)

The fiducial cross section for Y(1S) pair production in proton-proton collisions at a center-of-mass energy of 13 TeV in the region where both Y(1S) mesons have an absolute rapidity below 2.0 is measured to be 79±11(stat)±6(syst)±3(B)pb ass...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.physletb.2020.135578

A Decision Support Model for Hotel Recommendation Based on the Online Consumer Reviews Using Logarithmic Spherical Hesitant Fuzzy Information

Aziz Khan, Shougi S. Abosuliman, Saleem Abdullah, Muhammad Ayaz • Entropy (2021)

Spherical hesitant fuzzy sets have recently become more popular in various fields. It was proposed as a generalization of picture hesitant fuzzy sets and Pythagorean hesitant fuzzy sets in order to deal with uncertainty and fuzziness inform...

DOAJ Open Access (DOAJ) DOI: 10.3390/e23040432

Ruling Out Compact Jets as the Dominant Source of Radio Emission in Radio-quiet, High-Eddington-ratio Active Galactic Nuclei

Jeremiah D. Paul, Richard M. Plotkin • The Astrophysical Journal (2026)

The origin of core radio emission in radio-quiet active galactic nuclei (AGNs) is still actively debated. General-relativistic magnetohydrodynamics simulations often predict the launching of moderately large-scale jets from super-Eddington ...

DOAJ Open Access (DOAJ) DOI: 10.3847/1538-4357/ae36a6

Tera-Hertz Counterparts to Fast Radio Bursts from Coherent Cherenkov Radiation by Tilted Bunches

Ze-Nan Liu, Wei-Yang Wang, Yu-Chen Huang, Zi-Gao Dai • The Astrophysical Journal (2025)

Fast radio bursts (FRBs) are millisecond-duration extragalactic transients characterized by ultrahigh brightness temperatures, suggesting coherent emission mechanisms in extreme astrophysical processes. In this paper, we extend the bunched ...

DOAJ Open Access (DOAJ) DOI: 10.3847/1538-4357/adea76

A tetraquark 81-plet with $$J^{PC}=1^{-+}$$ J PC = 1 - + or a hybrid nonet

Niu Su, Er-Liang Cui, Yi-Wei Jiang, Hua-Xing Chen • European Physical Journal C: Particles and Fields (2026)

Abstract Confirming the existence of hybrid states remains challenging due to their experimental indistinguishability from tightly bound tetraquarks and loosely bound molecules. To address this issue, we employ QCD sum rules to systematical...

DOAJ Open Access (DOAJ) DOI: 10.1140/epjc/s10052-026-15939-y

A Gaussian Process Framework for Testing General Relativity with Gravitational Waves

Lachlan Passenger, Shun Yin Cheung, Nir Guttman, Nikhil Kannachel et al. • The Astrophysical Journal (2025)

Gravitational-wave astronomy provides a promising avenue for the discovery of new physics beyond general relativity as it probes extreme curvature and ultrarelativistic dynamics. However, in the absence of a compelling alternative to genera...

DOAJ Open Access (DOAJ) DOI: 10.3847/1538-4357/ae13b0

The Be star o Cas is indeed the primary of a triple system

Harmanec P., Yang S., Šlechta M., Grundstrom E. D. et al. • Astronomy & Astrophysics (2026)

Analysis of radial velocities of two narrow absorption components in the Mg II 4481 Å line demonstrated that the secondary of the Be star o Cas is indeed a close binary system composed of two B7 stars orbiting each other with a period of ...

DOAJ Open Access (DOAJ) DOI: 10.1051/0004-6361/202659678

Investigating the timelike Compton scattering in photon–proton interactions at the EIC

Ya-Ping Xie, V. P. Gonçalves • European Physical Journal C: Particles and Fields (2024)

Abstract Information about the three-dimensional description of the quark and gluon content of hadrons, described by the generalized parton distributions (GPDs), can be probed by exclusive processes in electron–proton (ep) collisions. In th...

DOAJ Open Access (DOAJ) DOI: 10.1140/epjc/s10052-024-13296-2

DPS mechanism for associated $$c\bar{c} b\bar{b}$$ cc¯bb¯ production in AA UPCs

Edgar Huayra, Emmanuel G. de Oliveira, Roman Pasechnik • European Physical Journal C: Particles and Fields (2020)

Abstract We discuss the associated $$c\bar{c}$$ cc¯ and $$b\bar{b}$$ bb¯ quark pairs production in the double-parton scattering (DPS) process in ultraperipheral (UPCs) AA collisions. We derive an analogue of the inclusive DPS pocket formula...

DOAJ Open Access (DOAJ) DOI: 10.1140/epjc/s10052-020-8354-3

Power Load Probabilistic Prediction Based on Multi-Value Quantile Regression and Timing Fusion Ensemble Learning Model

Yuhang Liu, Fei Mei, Jun Zhang, Xiang Dai et al. • Entropy (2026)

The core component to ensure the refined and safe operation of distribution network scheduling is 10 kV bus load probabilistic prediction. However, existing probabilistic prediction methods suffer from insufficient dynamic feature extractio...

DOAJ Open Access (DOAJ) DOI: 10.3390/e28030329

Drivers of municipal waste generation in Nordic countries: panel evidence

Mohammad Ridwan, Zulfiquar Ali Antor, Jeremy Ko, Mohammad Haseeb et al. • Waste Management Bulletin (2026)

Municipal waste generation remains a persistent sustainability challenge, even in countries with strong environmental governance and circular economy ambitions. Yet it remains unclear how affluence, household final consumption expenditure a...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.wmb.2026.100394

Determinants of Financial Literacy and Investment Behavior: Evidence from University Students

Muhammad Sulaman Akram, Noureen A. Khan, Baharom Hamid, Mudeer Khattak • NUML International Journal of Business & Management (2024)

The research explores Financial Literacy (FL) among undergraduate students. The study aims to evaluate the FL of a specific group of undergraduate students. It investigates how different demographic and socioeconomic factors influence these...

DOAJ Open Access (DOAJ)

Machine learning-based dynamic risk measurement for white sugar futures under geopolitical risks

Zihao Qiu, Siyu Chen, Zixin Feng, Ruitong Luo et al. • Frontiers in Physics (2025)

Futures, as significant financial derivatives, play a crucial role in financial markets by fulfilling price discovery functions and providing efficient risk hedging tools. Against the backdrop of geopolitical conflicts, market risk emerges ...

DOAJ Open Access (DOAJ) DOI: 10.3389/fphy.2025.1674717

Edge-centric connectome-genetic markers of bridging factor to comorbidity between depression and anxiety

Zhiyi Chen, Yancheng Tang, Xuerong Liu, Wei Li et al. • Nature Communications (2024)

Abstract Depression-anxiety comorbidity is commonly attributed to the occurrence of specific symptoms bridging the two disorders. However, the significant heterogeneity of most bridging symptoms presents challenges for psychopathological in...

DOAJ Open Access (DOAJ) DOI: 10.1038/s41467-024-55008-0

Modified Block Homotopy Perturbation Method for solving triangular linear Diophantine fuzzy system of equations

Mudassir Shams, Nasreen Kausar, Naveed Khan, Mohd Asif Shah • Advances in Mechanical Engineering (2023)

Numerous real-world applications can be solved using the broadly adopted notions of intuitionistic fuzzy sets, Pythagorean fuzzy sets, and q-rung orthopair fuzzy sets. These theories, however, have their own restrictions in terms of members...

DOAJ Open Access (DOAJ) DOI: 10.1177/16878132231159519