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We report a radio SETI search for periodic, kHz-wide signals from five of the nearest stars observable with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). Using the 19-beam L-band receiver (1.05-1.45 GHz), we obtained…

Solar and Stellar Astrophysics · Physics 2026-01-22 Yu Hu , Bo-Lun Huang , Vishal Gajjar , Xiao-Hang Luan , Zhen-Zhao Tao , Tong-Jie Zhang

The Transient Optical Sky Survey (TOSS) is an automated, ground-based telescope system dedicated to searching for optical transient events. Small telescope tubes are mounted on a tracking, semi-equatorial frame with a single polar axis.…

Instrumentation and Methods for Astrophysics · Physics 2012-10-05 E. Hadjiyska , G. Hughes , P. Lubin , S. Taylor , R. Hartong-Redden , J. Zierten

The Rayleigh limit and low Signal-to-Noise Ratio (SNR) scenarios pose significant limitations to optical imaging systems used in remote sensing, infrared thermal imaging, and space domain awareness. In this study, we introduce a Stochastic…

Optics · Physics 2024-01-18 Hyunsoo Choi , Seungman Choi , Peter Menart , Angshuman Deka , Zubin Jacob

We propose a novel instrument design to greatly expand the current optical and near-infrared SETI search parameter space by monitoring the entire observable sky during all observable time. This instrument is aimed to search for…

Fast Radio bursts (FRBs), bright transients with millisecond durations at $\sim$ GHz and typical redshifts probably $>0.8$, are likely to be gravitationally lensed by intervening galaxies. Since the time delay between images of strongly…

Cosmology and Nongalactic Astrophysics · Physics 2018-10-16 Zhengxiang Li , He Gao , Xu-Heng Ding , Guo-Jian Wang , Bing Zhang

As an alternative explanation of the dimming of distant supernovae it has recently been advocated that we live in a special place in the Universe near the centre of a large spherical void described by a Lemaitre-Tolman-Bondi (LTB) metric.…

Astrophysics · Physics 2009-10-02 Juan Garcia-Bellido , Troels Haugboelle

We present a framework for detecting transient gamma-ray phenomena in a controlled environment by combining end-to-end simulations of the Fermi-LAT sky with self-supervised spatio-temporal deep learning. We generate a ten-year synthetic…

(Abridged) Lunar occultations (LO) are a very efficient and powerful technique, that achieves the best combination of high angular resolution and sensitivity possible today at near-infrared wavelengths. Given that the events are fixed in…

Solar and Stellar Astrophysics · Physics 2015-05-19 A. Richichi , O. Fors , W-P. Chen , E. Mason

The Earth's atmospheric turbulence degrades the precision of ground-based astrometry. Here, we discuss these limitations and propose that, with proper treatment of systematics and by leveraging the many epochs available from the Korean…

We report the first radio interferometric search at 843 MHz for fast transients, particularly Fast Radio Bursts (FRBs). The recently recommissioned Swinburne University of Technology's digital backend for the Molonglo Observatory Synthesis…

We study the statistics and properties of microlensing events that can be detected by the Transiting Exoplanet Survey Satellite(TESS) based on Monte Carlo simulations. We simulate potential microlensing events from a sample of the TESS…

Earth and Planetary Astrophysics · Physics 2024-08-27 Sedighe Sajadian , Atousa Kalantari , Hossein Fatheddin , Somayeh Khakpash

The Huntsman Telescope, located at Siding Spring Observatory in Australia, is a system of ten telephoto Canon lenses designed for low surface brightness imaging in the Southern sky. Based upon the Dragonfly Telephoto Array, the refractive…

The Rapid Telescopes for Optical Response (RAPTOR) experiment is a spatially distributed system of autonomous robotic telescopes that is designed to monitor the sky for optical transients. The core of the system is composed of two telescope…

We propose to design and build an algorithm that will use a Convolutional Neural Network (CNN) and observations from the Unistellar network to reliably detect asteroid occultations. The Unistellar Network, made of more than 10,000 digital…

Earth and Planetary Astrophysics · Physics 2022-12-21 Dorian Cazeneuve , Franck Marchis , Guillaume Blaclard , Paul A. Dalba , Victor Martin , Joé Asencioa

The Euclid ERO showcase Euclid's capabilities in advance of its main mission, targeting 17 astronomical objects, from galaxy clusters, nearby galaxies, globular clusters, to star-forming regions. A total of 24 hours observing time was…

Instrumentation and Methods for Astrophysics · Physics 2025-04-30 J. -C. Cuillandre , E. Bertin , M. Bolzonella , H. Bouy , S. Gwyn , S. Isani , M. Kluge , O. Lai , A. Lançon , D. A. Lang , R. Laureijs , T. Saifollahi , M. Schirmer , C. Stone , Abdurro'uf , N. Aghanim , B. Altieri , F. Annibali , H. Atek , P. Awad , M. Baes , E. Bañados , D. Barrado , S. Belladitta , V. Belokurov , A. Boselli , F. Bournaud , J. Bovy , R. A. A. Bowler , G. Buenadicha , F. Buitrago , M. Cantiello , D. Carollo , S. Codis , M. L. M. Collins , G. Congedo , E. Dalessandro , V. de Lapparent , F. De Paolis , J. M. Diego , P. Dimauro , J. Dinis , H. Dole , P. -A. Duc , D. Erkal , M. Ezziati , A. M. N. Ferguson , A. Ferré-Mateu , A. Franco , R. Gavazzi , K. George , W. Gillard , J. B. Golden-Marx , B. Goldman , A. H. Gonzalez , R. Habas , W. G. Hartley , N. A. Hatch , R. Kohley , J. Hoar , J. M. Howell , L. K. Hunt , P. Jablonka , M. Jauzac , Y. Kang , J. H. Knapen , J. -P. Kneib , R. Kohley , P. B. Kuzma , S. S. Larsen , O. Marchal , J. Martín-Fleitas , P. Marcos-Arenal , F. R. Marleau , E. L. Martín , D. Massari , A. W. McConnachie , M. Meneghetti , M. Miluzio , J. Miro Carretero , H. Miyatake , M. Mondelin , M. Montes , A. Mora , O. Müller , C. Nally , K. Noeske , A. A. Nucita , P. A. Oesch , M. Oguri , R. F. Peletier , M. Poulain , L. Quilley , G. D. Racca , M. Rejkuba , J. Rhodes , P. -F. Rocci , J. Román , S. Sacquegna , E. Saremi , R. Scaramella , E. Schinnerer , S. Serjeant , E. Sola , J. G. Sorce , F. Tarsitano , I. Tereno , S. Toft , C. Tortora , M. Urbano , A. Venhola , K. Voggel , J. R. Weaver , X. Xu , M. Žerjal , R. Zöller , S. Andreon , N. Auricchio , M. Baldi , A. Balestra , S. Bardelli , A. Basset , R. Bender , C. Bodendorf , E. Branchini , S. Brau-Nogue , M. Brescia , J. Brinchmann , S. Camera , V. Capobianco , C. Carbone , J. Carretero , S. Casas , F. J. Castander , M. Castellano , S. Cavuoti , A. Cimatti , C. J. Conselice , L. Conversi , Y. Copin , F. Courbin , H. M. Courtois , M. Cropper , J. -G. Cuby , A. Da Silva , H. Degaudenzi , A. M. Di Giorgio , M. Douspis , C. A. J. Duncan , X. Dupac , S. Dusini , M. Fabricius , M. Farina , S. Farrens , S. Ferriol , S. Fotopoulou , M. Frailis , E. Franceschi , S. Galeotta , B. Garilli , B. Gillis , C. Giocoli , P. Gómez-Alvarez , A. Grazian , F. Grupp , L. Guzzo , S. V. H. Haugan , J. Hoar , H. Hoekstra , W. Holmes , I. Hook , F. Hormuth , A. Hornstrup , P. Hudelot , K. Jahnke , M. Jhabvala , E. Keihänen , S. Kermiche , A. Kiessling , M. Kilbinger , T. Kitching , B. Kubik , K. Kuijken , M. Kümmel , M. Kunz , H. Kurki-Suonio , O. Lahav , S. Ligori , P. B. Lilje , V. Lindholm , I. Lloro , D. Maino , E. Maiorano , O. Mansutti , O. Marggraf , K. Markovic , N. Martinet , F. Marulli , R. Massey , S. Maurogordato , H. J. McCracken , E. Medinaceli , Y. Mellier , G. Meylan , J. J. Mohr , M. Moresco , L. Moscardini , E. Munari , R. Nakajima , R. C. Nichol , S. -M. Niemi , C. Padilla , S. Paltani , F. Pasian , J. A. Peacock , K. Pedersen , W. J. Percival , V. Pettorino , S. Pires , G. Polenta , M. Poncet , L. A. Popa , L. Pozzetti , F. Raison , R. Rebolo , A. Refregier , A. Renzi , G. Riccio , Hans-Walter Rix , E. Romelli , M. Roncarelli , E. Rossetti , R. Saglia , D. Sapone , P. Schneider , T. Schrabback , A. Secroun , G. Seidel , S. Serrano , C. Sirignano , G. Sirri , J. Skottfelt , L. Stanco , P. Tallada-Crespí , A. N. Taylor , H. I. Teplitz , R. Toledo-Moreo , A. Tsyganov , I. Tutusaus , E. A. Valentijn , L. Valenziano , T. Vassallo , G. Verdoes Kleijn , Y. Wang , J. Weller , O. R. Williams , G. Zamorani , E. Zucca , C. Baccigalupi , C. Burigana , P. Casenove , P. Liebing , V. Scottez , P. Simon , D. Scott

The mass ranges of meteors, imaged by electro-optical (EO) cameras and backscatter radar receivers, for the most part do not overlap. Typical EO systems detect meteoroid masses down to 10$^{-5}$ kg or roughly magnitude +2 meteors when using…

Instrumentation and Methods for Astrophysics · Physics 2022-02-23 P. Gural , T. Mills , M. Mazur , P. Brown

This paper outlines the scientific goals and observational strategies of the Mini-SiTian array. Mounted at Xinglong Observatory, the Mini-SiTian array consists of three 30 cm telescopes and has been in operation since 2022. The large field…

Instrumentation and Methods for Astrophysics · Physics 2025-04-03 Henggeng Han , Yang Huang , Beichuan Wang , Yongkang Sun , Cunshi Wang , Zhirui Li , Junjie Jin , Ningchen Sun , Kai Xiao , Min He , Hongrui Gu , Zexi Niu , Hong Wu , Jifeng Liu

We provide a technique for resolving intermediate-separation binaries stars with medium-sized telescopes (i.e. diameter less than or equal to 2.5 m) at wavelengths around 825 nm in the super-resolution range (i.e. below the limit defined by…

Instrumentation and Methods for Astrophysics · Physics 2025-01-10 Miguel A. Cagigas , R. Clavero , Manuel P. Cagigal , David Nespral , A. A. Djupvik , D. Jones , Pedro J. Valle , Vidal F. Canales , E. Soria , R. López , O. Zamora , A. Oscoz , J. Marco

The Fan Observatory Bench Optical Spectrograph (FOBOS) is intended for single-object optical spectroscopy at moderate resolution (R~1500-3000) using a fiber-fed, bench-mounted design to maintain stability. Whenever possible, the instrument…

The Kuiper belt is a remnant of the primordial Solar System. Measurements of its size distribution constrain its accretion and collisional history, and the importance of material strength of Kuiper belt objects (KBOs). Small, sub-km sized,…

Earth and Planetary Astrophysics · Physics 2015-05-14 H. E. Schlichting , E. O. Ofek , M. Wenz , R. Sari , A. Gal-Yam , M. Livio , E. Nelan , S. Zucker
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