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Modeling the Multiwavelength Emission of 3C 279 during the 14 years of Fermi-LAT Era
Krishna Mohana A, Alok C. Gupta, Junhui Fan, Narek Sahakyan, Claudia M. Raiteri, Lang Cui, Anne Lahteenmaki, Mark Gurwell, Merja Tornikoski, Massimo Villata
https://arxiv.org/abs/2507.03913

Modeling the Multiwavelength Emission of 3C 279 during the 14 years of Fermi-LAT Era
We report the results of our long-term multiwavelength spectral energy distribution (SED) study on the flat spectrum radio quasar 3C 279 during the $\sim14$ years (2008--2022) of {\sl Fermi}-LAT (Large Area Telescope) observing period. The {\sl Fermi}-LAT data were complemented with data in other wavebands obtained from {\sl Swift}-XRT/UVOT, Whole Earth Blazar Telescope (WEBT), along with other optical and radio data from several observatories. Different activity states were identified from the…

Benchmarking XRootD-HTTPS on 400Gbps Links with Variable Latencies
Aashay Arora, Diego Davila, Frank W\"urthwein, John Graham, Dima Mishin, Justas Balcas, Tom Lehman, Xi Yang, Chin Guok, Harvey Newman
https://arxiv.org/abs/2508.00228

Benchmarking XRootD-HTTPS on 400Gbps Links with Variable Latencies
In anticipation of the High Luminosity-LHC era, there is a critical need to oversee software readiness for upcoming growth in network traffic for production and user data analysis access. This paper looks into software and hardware required improvements in US-CMS Tier-2 sites to be able to sustain and meet the projected 400 Gbps bandwidth demands while tackling the challenge posed by varying latencies between sites. Specifically, our study focuses on identifying the performance of XRootD HTTP t…

Straightforward Method to Orient Black Phosphorus from Bulk to Thin Layers using a Standard Green Laser
Etienne Carr\'e, Fr\'ed\'eric Fossard, Jean-S\'ebastien M\'erot, Denis Boivin, Nicolas Horezan, Victor Zatko, Florian Godel, Bruno Dlubak, Marie-Blandine Martin, Pierre Seneor, Etienne Gaufres, Julien Barjon, Annick Loiseau, Ingrid Stenger

Straightforward Method to Orient Black Phosphorus from Bulk to Thin Layers using a Standard Green Laser
The crystallographic orientation of anisotropic 2D materials plays a crucial role in their physical properties and device performance. However, standard orientation techniques such as transmission electron microscopy (TEM) or X-ray diffraction (XRD) can be complex and less accessible for routine characterization. In this study, we investigate the orientation of black phosphorus (BP) from bulk crystals to thin layers using angle-resolved polarized Raman spectroscopy (ARPRS) with a single-wavelen…

Magnetic behavior of $5d^1$ Re-based double perovskite Sr$_2$ZnReO$_6$
Muhammad Maikudi Isah, Biswajit Dalal, Xun Kang, Dario Fiore Mosca, Ifeanyi John Onuorah, Valerio Scagnoli, Pietro Bonf\`a, Roberto De Renzi, Alexei A. Belik, Cesare Franchini, Kazunari Yamaura, Samuele Sanna
https://arxiv.org/abs/2509.04071

Magnetic behavior of $5d^1$ Re-based double perovskite Sr$_2$ZnReO$_6$
The subtle interplay between spin-orbit coupling, exchange interactions, and cation ordering can lead to exotic magnetic states in transition-metal ions. We report a comprehensive study of the Re-based (5$d^1$) ordered double perovskite oxide Sr$_2$ZnReO$_6$ combining synchrotron x-ray diffraction (XRD), magnetic susceptibility, muon spin relaxation ($μ$SR) measurements, and density functional theory (DFT) calculations. XRD reveals that Sr$_2$ZnReO$_6$ crystallizes in the monoclinic structure …

On the origin of a possible hard VHE spectrum from M87 discovered by LHAASO
Rui Xue, Jia-Chun He, Dingrong Xiong, Ze-Rui Wang
https://arxiv.org/abs/2508.01986 https://

On the origin of a possible hard VHE spectrum from M87 discovered by LHAASO
Recent LHAASO observations hint at potential spectral hardening around 20 TeV in M87's very high energy (VHE) emission, suggesting a possible new radiation component. In this work, we construct averaged multiwavelength SEDs by combining data from Chandra and Swift-UVOT/XRT covering the same period as the LHAASO detection to investigate the origin of this feature. We test several radiation mechanisms, including the pp interaction, proton synchrotron emission, photomeson process and two-zone lept…

Enhanced thermopower in a magnetic semiconductor EuTe4 with multiple charge-density-wave instabilities/
Hidefumi Takahashi, Kiichiro Yoshida, Akitoshi Nakano, Shintaro Ishiwata
https://arxiv.org/abs/2508.16017

Enhanced thermopower in a magnetic semiconductor EuTe4 with multiple charge-density-wave instabilities/
We investigate the layered magnetic semiconductor EuTe4, focusing on its intricate charge-density wave (CDW) states near and above room temperature through single-crystal X-ray diffraction (XRD), magnetic, and thermoelectric measurements.The XRD measurement revealed that the CDW state inducing the polar lattice distortion persists even at 650 K, demonstrating its remarkable thermal stability. Notably, the Seebeck coefficient near room temperature reaches values exceeding 500 uVK-1. This large S…

Second harmonic generation in polycrystalline ZnS nanowaveguides
Antoine Lemoine, Lise Morice, Brieg Le Corre, Antoine L\'etoublon, Alex Na\"im, Thomas Batte, Mathieu Perrin, Charles Cornet, Yannick Dumeige, Christophe Levallois, Yoan l\'eger
https://arxiv.org/abs/2507.22667

Second harmonic generation in polycrystalline ZnS nanowaveguides
We report the realization of Zinc Sulfide (ZnS) nanowaveguides and the experimental observation of second harmonic generation (SHG) in such structures, demonstrating their potential for integrated nonlinear photonics. ZnS thin films were deposited via RF magnetron sputtering and characterized using atomic force microscopy (AFM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and ellipsometry. The nonlinear optical properties of these films were theoretically analyzed to assess the…

Evidence for enhanced mass transfer in the disc preceding the transition to the soft state in MAXI J1820 070
Pengcheng Yang, Guobao Zhang, David M. Russell, Mariano M\'endez, M. Cristina Baglio, Diego Altamirano, Yijung Yang, Payaswini Saikia, Kevin Alabarta
https://arxiv.org/abs/2507.00532

Evidence for enhanced mass transfer in the disc preceding the transition to the soft state in MAXI J1820+070
We investigate the 2018-2019 main outburst and the subsequent mini-outbursts of the black hole low-mass X-ray binary MAXI J1820+070 using optical/ultraviolet data from the Las Cumbres Observatory (LCO), the American Association of Variable Star Observers (AAVSO), and $\textit{Swift}$/UVOT, as well as X-ray data from $\textit{Insight}$-HXMT and $\textit{Swift}$/XRT. Given the high-cadence observations, we identify a broad dip-like feature in both the optical and X-ray light curves preceding the …

Constrain magnetar parameters by taking into account the evolutionary effects of radius and moment of inertia with \emph{Swift}/XRT data
Lin Lan, He Gao, Shunke Ai, Wen-Jin Xie, Yong Yuan, Long Li, Li-Ping Xin, Jian-Yan Wei
https://arxiv.org/abs/2507.11110

Constrain magnetar parameters by taking into account the evolutionary effects of radius and moment of inertia with \emph{Swift}/XRT data
A newly born millisecond magnetar has been proposed as one possible central engine of some gamma-ray bursts (GRBs) with X-ray plateau emission. In this work, we systematically analyzed the \emph{Swift}/XRT data of long GRBs with plateau emission that were detected before 2023 December, and estimated the magnetar parameters by considering the $R/I$ evolutionary effects, and investigated possible relationships among these parameters and their relation to the GRB jet and magnetar wind radiation. W…