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In this paper, we study stellar light curves from the TESS satellite (Transiting Exoplanet Survey Satellite) for the presence of stellar flares. The main aim is to detect stellar flares using two-minutes cadence data and to perform…

太阳与恒星天体物理 · 物理学 2022-08-31 Małgorzata Pietras , Robert Falewicz , Marek Siarkowski , Kamil Bicz , Paweł Preś

Advances in astronomy are often driven by serendipitous discoveries. As survey astronomy continues to grow, the size and complexity of astronomical databases will increase, and the ability of astronomers to manually scour data and make such…

天体物理仪器与方法 · 物理学 2019-01-09 Daniel Giles , Lucianne Walkowicz

The Kepler survey has provided a wealth of astrophysical knowledge by continuously monitoring over 150,000 stars. The resulting database contains thousands of examples of known variability types and at least as many that cannot be…

天体物理仪器与方法 · 物理学 2015-12-16 S. D. Kügler , N. Gianniotis , K. L. Polsterer

We present a new method to detect planetary transits from time-series photometry, the Transit Least Squares (TLS) algorithm. TLS searches for transit-like features while taking the stellar limb darkening and planetary ingress and egress…

地球与行星天体物理 · 物理学 2019-03-06 Michael Hippke , René Heller

The Chinese Space Station Optical Survey (CSS-OS) is a mission to explore the vast universe. This mission will equip a 2-meter space telescope to perform a multi-band NUV-optical large area survey (over 40% of the sky) and deep survey (~1%…

天体物理仪器与方法 · 物理学 2025-11-11 Xin Zhang , Li Cao , Xianmin Meng

Ten days of commissioning data (Quarter 0) and thirty-three days of science data (Quarter 1) yield instrumental flux timeseries of ~150,000 stars that were combed for transit events, termed Threshold Crossing Events (TCE), each having a…

We assess the detectability of tidal disruption events (TDEs) using mock observations from the Mini-SiTian array. We select 100 host galaxy samples from a simulated galaxy catalog based on specific criteria such as redshift, BH mass, and…

The Galactic O-Star Spectroscopic Survey (GOSSS) is a project that is observing all known Galactic O stars with B < 13 (~2000 objects) in the blue-violet part of the spectrum with R~2500. It also includes two companion surveys (a…

This paper derives the optimal Bayesian processing of an out-of-sequence (OOS) set of measurements in continuous-time for multiple target tracking. We consider a multi-target system modelled in continuous time that is discretised at the…

系统与控制 · 电气工程与系统科学 2021-09-02 Ángel F. García-Fernández , Wei Yi

The Kepler spacecraft provided the first long-baseline, high-precision photometry for large numbers of stars. This enabled the discovery of thousands of new exoplanets, and the characterization of myriad astrophysical phenomena. However,…

太阳与恒星天体物理 · 物理学 2018-10-23 Thomas Barclay , Geert Barentsen

NASA's Kepler Space Telescope has collected high-precision, high-cadence time series photometry on 781,590 unique postage-stamp targets across 21 different fields of view. These observations have already yielded 2,496 scientific…

CONTEXT: Thermal emission from extrasolar planets makes it possible to study important physical processes in their atmospheres and derive more precise orbital elements. AIMS: By using new near infrared and optical data, we examine how these…

地球与行星天体物理 · 物理学 2022-08-10 G. Kovacs , I. Dekany , B. Karamiqucham , G. Chen , G. Zhou , M. Rabus , T. Kovacs

The Chinese Space Station Optical Survey (CSS-OS) is a planned full sky survey operated by the Chinese Space Station Telescope (CSST). It can simultaneously perform the photometric imaging and spectroscopic slitless surveys, and will probe…

宇宙学与河外天体物理 · 物理学 2019-10-08 Yan Gong , Xiangkun Liu , Ye Cao , Xuelei Chen , Zuhui Fan , Ran Li , Xiao-Dong Li , Zhigang Li , Xin Zhang , Hu Zhan

The nearly continuous light curves with micromagnitude precision provided by the space mission Kepler are revolutionising our view of pulsating stars. They have revealed a vast sea of low-amplitude pulsation modes that were undetectable…

The EXIST active shields, planned for the main detectors of the coded aperture telescope, will have approximately 15 times the area of the BATSE detectors, and they will have a good geometry on the spacecraft for viewing both the leading…

天体物理学 · 物理学 2007-05-23 Colleen A. Wilson , G. J. Fishman , J. -S. Hong , J. E. Grindlay , H. Krawczynski

We present a technique for verifying or refuting exoplanet candidates from the Transiting Exoplanet Survey Satellite (TESS) mission by searching for nearby eclipsing binary stars using higher-resolution archival images from ground-based…

地球与行星天体物理 · 物理学 2023-12-14 Gabrielle Ross , Andrew Vanderburg , Zoë L. de Beurs , Karen A. Collins , Rob J. Siverd , Kevin Burdge

Observational astronomy in the time-domain era faces several new challenges. One of them is the efficient use of observations obtained at multiple epochs. The work presented here addresses faint object detection with multi-epoch data, and…

天体物理仪器与方法 · 物理学 2017-04-19 Tamas Budavari , Alexander S. Szalay , Thomas J. Loredo

We present the results of a search for potential transit signals in the first three quarters of photometry data acquired by the Kepler Mission. The targets of the search include 151,722 stars which were observed over the full interval and…

We report the discovery of a unique object of uncertain nature -- but quite possibly a disintegrating asteroid or minor planet -- orbiting one star of the widely separated binary TIC 400799224. We initially identified the system in data…

Out-of-time-order correlator (OTOC), been suggested as a measure of quantum information scrambling in quantum many-body systems, has received enormous attention recently. The experimental measurement of OTOC is quite challenging. The…

量子物理 · 物理学 2019-04-01 Xinfang Nie , Ze Zhang , Xiuzhu Zhao , Tao Xin , Dawei Lu , Jun Li