Demise of Kreutz Sungrazing Comet C/2024 S1 (ATLAS) by David Jewitt, Jane Luu, Jing Li

“…Kreutz sungrazer C/2024 S1 (ATLAS) was discovered a month before reaching its perihelion distance of 0.008 au, allowing physical observations from both ground- and space-based telescopes. We present observations from 0.9 to 0.4 au using the Nordic Optical Telescope showing that (1) nucleus disintegration was ongoing already at 0.7 au pre-perihelion, (2) the activity varied unpredictably with distance, and (3) the nucleus radius was  <600 m (red geometric albedo 0.04 assumed). …”
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Are Wolf-Rayet Stars Able to Pollute the Interstellar Medium of Galaxies? Results from Integral Field Spectroscopy by Enrique Pérez-Montero, Carolina Kehrig, Jarle Brinchmann, José M. Vílchez, Daniel Kunth, Florence Durret

“…We used the integral field spectroscopy technique in the optical spectral range (3700 Å–6850 Å) with PMAS attached to the CAHA 3.5 m telescope. Our statistical analysis of the spatial distributions of O/H and N/O, as derived using the direct method or strong-line parameters consistent with it, indicates that metallicity is homogeneous in five out of the six analysed objects in scales of the order of several kpc. …”
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Enhanced YOLOv8-based method for space debris detection using cross-scale feature fusion by Yang Guo, Xianlong Yin, Yao Xiao, Zhengxu Zhao, Xu Yang, Chenggang Dai

“…Abstract Optical observations play a crucial role in monitoring space debris, and long exposure large field-of-view telescopes exhibit robust detection capabilities for identifying space debris. …”
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The Low-Mass End of the MBH/Mhost Relation in Quasars by Roberto Decarli, Renato Falomo, Jari K. Kotilainen, Tomi Hyvönen, Michela Uslenghi, Aldo Treves

“…We imaged our sources in H band from the Nordic Optical Telescope. The quasar host galaxies have been resolved in 25 out of 26 observed targets. …”
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Star Formation Law at Sub-kpc Scale in the Elliptical Galaxy Centaurus A as Seen by ALMA by Jazeel H. Azeez, Zamri Z. Abidin, C.-Y. Hwang, Zainol A. Ibrahim

“…We present an extensive analysis of the relationship between star formation rate surface density (∑SFR) and molecular gas surface density (∑H2) at sub-kpc scale in the elliptical galaxy Centaurus A (also known as NGC 5128) at the distance 3.8 Mpc. 12CO (J = 2-1) data from Atacama Large Millimetre/Sub-Millimetre Array SV data with very high resolution (2.9′′, 0.84′′), as well as 24 μm data from the Spitzer Space Telescope, were used. This is one of the first studies of the SF law on Centaurus A at this very high spatial resolution. …”
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Beam Tilt Aberration Detection of the Seven-Unit Phased Fiber Laser Array by Xin Yu, Xingyue Wang, Jing Liang, Cai Liu, Xiaolong Ni, Suping Bai, Jiasu Li, Zeping Liu, Lijie Hou

“…A co-aperture optics system was adapted to detect the tilt aberrations of a seven-element phased fiber laser array system simultaneously. A Kepler telescope was designed to construct the conjugate relation between the exit pupil of a fiber optic laser array system and a microlens array and also to match the size of the seven beams and the microlens array. …”
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Continuous Gravitational Waves from Thermal Mountains on Accreting Neutron Stars: Effect of the Nuclear Pasta Phase by Hong-Bo Li, Lijing Shao, Cheng-Jun Xia, Ren-Xin Xu

“…These sources are well above the sensitivity curves for Cosmic Explorer and Einstein Telescope detectors. Our work advances the understanding of the properties of nuclear pasta and a possible mechanism for continuous gravitational waves.…”
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Mapping the Active Galactic Nucleus Effects on the Stellar and Gas Properties of NGC 5806 by Sophie L. Robbins, Sandra I. Raimundo, Matthew A. Malkan

“…We analyze integral field spectroscopy of the active galaxy NGC 5806, obtained using the Very Large Telescope Multi-Unit Spectroscopic Explorer. We map the dynamics of gas and stars, as well as gas optical emission line fluxes throughout the central 8 × 8 kpc ^2 of the galaxy. …”
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Mask-Pix2Pix Network for Overexposure Region Recovery of Solar Image by Dong Zhao, Long Xu, Linjie Chen, Yihua Yan, Ling-Yu Duan

“…Overexposure may happen for imaging of solar observation as extremely violet solar bursts occur, which means that signal intensity goes beyond the dynamic range of imaging system of a telescope, resulting in loss of signal. For example, during solar flare, Atmospheric Imaging Assembly (AIA) of Solar Dynamics Observatory (SDO) often records overexposed images/videos, resulting loss of fine structures of solar flare. …”
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A Path to the Stars: The Evolution of the Species by Fabrizio Vitali, Guido Chincarini, Mario Zannoni, Stefano Covino, Emilio Molinari, Stefano Benetti, Carlotta Bonoli, Favio Bortoletto, Enrico Cascone, Rosario Cosentino, Francesco D'Alessio, Paolo D'Avanzo, Vincenzo De Caprio, Massimo Della Valle, Alberto Fernandez-Soto, Dino Fugazza, Enrico Giro, Demetrio Magrin, Giuseppe Malaspina, Lech Mankiewicz, Raffaella Margutti, Ruben Mazzoleni, Luciano Nicastro, Alberto Riva, Marco Riva, Ruben Salvaterra, Paolo Spanò, Monica Sperandio, Mauro Stefanon, Gino Tosti, Vincenzo Testa

“…During the last years, a number of telescopes have been dedicated to the followup of the GRBs. …”
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A Refined Astrometric Approach Based on the Precision Premium and its Application to the Jupiter’s Satellite Himalia by Z. J. Zheng, Q. Y. Peng, F. R. Lin, D. Li

“…Since the advent of Gaia catalog, positional precision of a ground-based telescope can be greatly improved by correction of more subtle errors, including positional biases induced by atmospheric turbulence, and some instrumental factors such as geometric distortion and the charge transfer efficiency. …”
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Analyses of Multiple Balmer Emission Lines from Accreting Brown Dwarfs and Very Low Mass Stars by Jun Hashimoto, Yuhiko Aoyama

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CH3OH Thermal Lines Traces 6.7 GHz CH3OH Maser Variation of High-mass Protostar G353.273+0.641 by Shi-Min Song, Xi Chen, Sheng-Yuan Liu, Jun-Ting Liu

“…This study reports an analysis of the 6.7 GHz CH _3 OH maser in the high-mass protostar G353.273+0.641 (G353), utilizing data from the Tianma Radio Telescope. G353 is a possibly periodic variation in the flux density of the maser with a period of ∼330 days. …”
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A High-Precision Dynamic Six Degree-of-Freedom Pose Measurement of the Subreflectors of Large Antennas Based on a Position Sensitive Detector and Laser Array by Shangmin Lin, Wei Wang, Hu Wang, Yang Song, Yue Pan, Jiang Qiao, Yaoke Xue, Qinfang Chen, Meiying Liu, Yang Shen, Jie Liu, Yang Liu, Yongjie Xie, Canglong Zhou

“…Subreflector misalignment of a large steerable radio telescope induces a pointing error and reduces the gain of the antenna system. …”
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Feasibility and parameter optimization of ground-to-satellite uplink continuous-variable quantum key distribution by Jin Cheng, Yujie Chen, Ao Liu, Xin Sun, Junjie Guo, Bohan Yang, Peng Yin, Wenbo Liu, Lanjian Chen, Chen Dong

“…A parameter optimization scheme for orbital parameters, spot size, receiving telescope aperture, and modulation variance has been proposed to enhance the performance of the actual uplink CV-QKD, providing a reference for parameter selection in CV-QKD experiments.…”
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Hunting for Cold Exoplanets via Microlensing by Beaulieu, Jean-Philippe

“…The next phase, is a 450 days survey with the NASA Nancy Grace Roman Space Telescope from 2027. It will detect 3000+ planets and provide the mass function of cold planets down to the mass of Mars. …”
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Hydrogen Cyanide in Comet C/2022 E3 (ZTF) from 3.4 mm Wave Spectra by Juncen Li, Jianchun Shi, Yuehua Ma, Jixian Sun

“…We observed a long-period comet C/2022 E3 (ZTF) using the Purple Mountain Observatory 13.7 m radio telescope at 3.4 mm during mid January and early February in 2023. …”
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What Rogue Hydrogen Clouds Tell Us about Galactic Magnetic Fields by Bailey M. Forster, Tyler J. Foster, Roland Kothes, Alex S. Hill, Jo-Anne C. Brown

“…These results demonstrate the possibility of future three-dimensional reconstruction of the Galactic magnetic field and showcase the versatility of the Synthesis Telescope at the Dominion Radio Astrophysical Observatory as one of the few existing telescopes that can exploit this new method of probing Galactic magnetism.…”
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Tropospheric ozone sensing with a differential absorption lidar based on a single CO₂ Raman cell by G. Fan, Y. Fu, J. Huo, Y. Xiang, T. Zhang, T. Zhang, W. Liu, Z. Ning

“…The system emits three laser beams at wavelengths of 276, 287 and 299 nm by using the stimulated Raman effect of carbon dioxide (CO<span class="inline-formula">₂)</span>. A 250 mm telescope and a grating spectrometer are used to collect and separate the backscattering signals at the three wavelengths. …”
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Towards last-mile connectivity in 6G-IoT: An integrated MIMO-FSO communication system and FBG sensors under atmospheric attenuations, strain and temperature effects by R. Arunachalam, Rupali Singh, M. Vinoth Kumar

“…FSO systems are sensitive to temperature variations, and the position of the receiving telescope can be altered by mechanical strain that can affect the refractive index of the atmosphere, leading to signal attenuation and pointing errors. …”
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