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The PHOT (Portable High-Speed Occultation Telescope) systems were developed for the specific purpose of observing stellar occultations by solar system objects. Stellar occultations have unique observing constraints: they may only be…

天体物理仪器与方法 · 物理学 2015-05-27 E. F. Young , L. A. Young , C. B. Olkin , K. Shoemaker , R. G. French , J. Regester , M. W. Buie

Stellar occultation is a powerful technique that allows the determination of some physical parameters of the occulting object. The result depends on the photometric accuracy, the temporal resolution, and the number of chords obtained. Space…

Serendipitous stellar occultation search is so far the only way to detect the existence of very small, very dim, remote objects in the solar system. To date, however, there are only very few reported detections for trans-Neptunian objects…

地球与行星天体物理 · 物理学 2015-05-19 Hsiang-Kuang Chang , Chih-Yuan Liu , Kuan-Ting Chen

Over the past few years, wide-field time-domain surveys like ZTF and OGLE have led to discoveries of various types of interesting short-period stellar variables, such as ultracompact eclipsing binary white dwarfs, rapidly rotating…

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…

地球与行星天体物理 · 物理学 2024-08-27 Sedighe Sajadian , Atousa Kalantari , Hossein Fatheddin , Somayeh Khakpash

To segment a signal into blocks to be analyzed, few-shot keyword spotting (KWS) systems often utilize a sliding window of fixed size. Because of the varying lengths of different keywords or their spoken instances, choosing the right window…

音频与语音处理 · 电气工程与系统科学 2023-12-15 Kevin Wilkinghoff , Alessia Cornaggia-Urrigshardt

We present the results of a wide-field survey designed to measure the size, inclination, and radial distributions of Kuiper Belt Objects (KBOs). The survey found 86 KBOs in 73 square degrees observed to limiting red magnitude 23.7 using the…

天体物理学 · 物理学 2009-11-06 Chadwick A. Trujillo , David C. Jewitt , Jane X. Luu

The Tsinghua University-National Astronomical Observatories of China (NAOC) Transient Survey (TNTS) is an automatic survey for a systematic exploration of optical transients (OTs), conducted with a 60/90 cm Schmidt telescope at Xinglong…

A stellar occultation by a trans-Neptunian object (TNO) provides an opportunity to probe its size and shape. Very few occultations by TNOs have been sampled simultaneously from multiple locations, while a robust estimation of shadow size…

Context: Occultations of stars by asteroids are an efficient method to study the properties of minor bodies, and can be exploited as tools to derive very precise asteroid astrometry relative to the target star. With the availability of…

地球与行星天体物理 · 物理学 2020-09-16 João F. Ferreira , Paolo Tanga , Pedro Machado , Enrico Corsaro

We present variability measurements and partial light curves of Trans-Neptunian Objects (TNOs) from a two-night pilot study using Hyper Suprime-Cam (HSC) on the Subaru Telescope (Maunakea, Hawai'i, USA). Subaru's large aperture (8-m) and…

We report further results from the program of lunar occultation (LO) observations started at the 2.4-m Thai National Telescope (TNT) in 2014. We have recorded LO events of 18 stellar sources, leading to the detection of four angular…

太阳与恒星天体物理 · 物理学 2015-12-22 A. Richichi , O. Tasuya , P. Irawati , B. Soonthornthum , V. S. Dhillon , T. R. Marsh

Late-type stars are known to host numerous exoplanets, and their photometric variability, primarily caused by rotational modulation, provides a unique opportunity to study starspots. As exoplanets transit in front of their host stars, they…

太阳与恒星天体物理 · 物理学 2026-01-14 András Haris , Mikko Tuomi , Thomas Hackman

An automated, rapid classification of transient events detected in the modern synoptic sky surveys is essential for their scientific utility and effective follow-up using scarce resources. This presents some unusual challenges: the data are…

天体物理仪器与方法 · 物理学 2016-11-17 S. G. Djorgovski , A. A. Mahabal , C. Donalek , M. J. Graham , A. J. Drake , B. Moghaddam , M. Turmon

We suggest a new web-based approach for browsing and visualizing data produced by a network of telescopes, such as those of the ongoing TAOS and the forthcoming TAOS II projects. We propose a modern client-side technology and we present two…

天体物理仪器与方法 · 物理学 2014-08-28 D. Ricci , P. -G. Sprimont , C. Ayala , F. G. Ramón-Fox , R. Michel , S. Navarro , S. -Y. Wang , Z. -W. Zhang , M. J. Lehner , L. Nicastro , M. Reyes-Ruiz

An Earth orbiting detector sensitive to gamma ray photons will see step-like occultation features in its counting rate when a gamma ray point source crosses the Earth's limb. This is due to the change in atmospheric attenuation of the gamma…

Observatories and satellites around the globe produce tremendous amounts of imaging data to study many different astrophysical phenomena. The serendipitous observations of Solar System objects are a fortunate by-product which have often…

地球与行星天体物理 · 物理学 2019-06-11 Max Mahlke , Enrique Solano , Hervé Bouy , Benoit Carry , Gijs A. Verdoes Kleijn , Emmanuel Bertin

Cooperative perception via communication among intelligent traffic agents has great potential to improve the safety of autonomous driving. However, limited communication bandwidth, localization errors and asynchronized capturing time of…

计算机视觉与模式识别 · 计算机科学 2024-08-23 Yunshuang Yuan , Monika Sester

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…

地球与行星天体物理 · 物理学 2022-12-21 Dorian Cazeneuve , Franck Marchis , Guillaume Blaclard , Paul A. Dalba , Victor Martin , Joé Asencioa