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We describe strategies and tactics for detecting transiting planets, as learned from the experience of the XO Project. A key component is the web-enabled collaboration with a longitudinally-distributed Extended Team of dedicated volunteers…

天体物理学 · 物理学 2007-05-23 Peter R. McCullough , Christopher J. Burke

This paper reviews some of the recent observational results on stellar mass black hole candidates. Over the last decade, much of the progress in this field has been achieved through the study of transient X--ray binary sources which shine…

天体物理学 · 物理学 2009-09-25 L. Stella , G. L. Israel , S. Mereghetti , D. Ricci

The H.E.S.S. Imaging Air Cherenkov Telescope system is very well suited to perform follow-up observations of detections at other wavelengths or messengers due to its fast reaction and its comparably low energy threshold. These advantages…

高能天体物理现象 · 物理学 2019-08-14 F. Schüssler

Hubble Space Telescope SNAPshot surveys of 86 X-ray selected galaxy clusters at $0.3 < z < 0.5$ from the MACS sample have proven invaluable for the exploration of a wide range of astronomical research topics. We here present an overview of…

星系天体物理 · 物理学 2018-07-31 Andrew Repp , Harald Ebeling

With the observation of the gravitational wave event of August 17th 2017 the multi-messenger astronomy era has definitely begun. With the opening of this new panorama, it is necessary to have new instruments and a perfect coordination of…

天体物理仪器与方法 · 物理学 2020-12-11 F. C. T. Barbato , G. Barbarino , A. Boiano , A. Vanzanella , F. Garufi , F. Guarino , F. Renno , S. Papa , R. Guida , F. Di Capua

Tracking specific targets, such as pedestrians and vehicles, has been the focus of recent vision-based multitarget tracking studies. However, in some real-world scenarios, unseen categories often challenge existing methods due to…

计算机视觉与模式识别 · 计算机科学 2025-08-08 Zewei Wu , Longhao Wang , Cui Wang , César Teixeira , Wei Ke , Zhang Xiong

Several classes of sources are known to emit different messengers. Among them, transient sources are a special case, due to their serendipitous occurrence, time variability and duration on different timescales. They are associated with…

This paper presents a system-level engineering approach for the preliminary coverage performance analysis and the design of a generic Global Navigation Satellite System (GNSS) constellation. This analysis accounts for both the coverage…

天体物理仪器与方法 · 物理学 2020-09-22 Marco Nugnes , Camilla Colombo , Massimo Tipaldi

Most planetary discoveries with the K2 and TESS missions are restricted to short periods because of the limited duration of observation. However, the re-observation of sky area allows for the detection of longer period planets. We describe…

地球与行星天体物理 · 物理学 2020-02-19 S. Dholakia , S. Dholakia , Andrew W. Mayo , Courtney D. Dressing

A solar sail propelled small satellite mission concept to intercept and potentially rendezvous with newly discovered transient interstellar objects (ISOs) is described. The mission concept derives from the proposal for a technology…

天体物理仪器与方法 · 物理学 2022-07-05 Darren Garber , Louis D. Friedman , Artur R. Davoyan , Slava G. Turyshev , Nahum Melamed , John McVey , Todd F. Sheerin

The K2 mission of the Kepler Space Telescope offers a unique possibility to examine sources of both Galactic and Extra-galactic origin with high cadence photometry. Alongside the multitude of supernovae and quasars detected within targeted…

天体物理仪器与方法 · 物理学 2020-08-12 R. Ridden-Harper , B. E. Tucker , M. Gully-Santiago , G. Barentsen , A. Rest , P. Garnavich , E. Shaya

The success of the SWIFT/BAT and INTEGRAL missions has definitely opened a new window for follow-up and deep study of the transient gamma-ray sky. This now appears as the access key to important progresses in the area of cosmological…

The Star Formation Across Cosmic Time (SFACT) survey is a new narrowband survey designed to detect emission-line galaxies (ELGs) and quasi-stellar objects (QSOs) over a wide range of redshifts in discrete redshift windows. The survey…

星系天体物理 · 物理学 2023-08-03 David J. Carr , Jennifer Sieben , John J. Salzer , Samantha W. Brunker , Bryce Cousins

The cross-correlation between the ROSAT all-sky survey (~150000 sources) and the Tycho mission (~1000000 stars) catalogs has selected about 14000 stellar X-ray sources (RasTyc sample, Guillout et al. 1999). About 200-300 stars have been…

天体物理学 · 物理学 2007-05-23 Antonio Frasca , Patrick Guillout , Rubens Freire-Ferrero , Ettore Marilli , Katia Biazzo

Astronomy has been at the forefront of the development of the techniques and methodologies of data intensive science for over a decade with large sky surveys and distributed efforts such as the Virtual Observatory. However, it faces a new…

天体物理仪器与方法 · 物理学 2012-08-14 Matthew J. Graham , S. G. Djorgovski , Ashish Mahabal , Ciro Donalek , Andrew Drake , Giuseppe Longo

In the companion paper we began the task of systematically studying the detection of planets in wide orbits ($a > 1.5 R_E$) via microlensing surveys. In this paper we continue, focusing on repeating events. We find that, if all planetary…

天体物理学 · 物理学 2009-10-31 Rosanne Di Stefano , Richard A. Scalzo

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.…

天体物理仪器与方法 · 物理学 2012-10-05 E. Hadjiyska , G. Hughes , P. Lubin , S. Taylor , R. Hartong-Redden , J. Zierten

Large sky surveys are increasingly relying on image subtraction pipelines for real-time (and archival) transient detection. In this process one has to contend with varying PSF, small brightness variations in many sources, as well as…

天体物理仪器与方法 · 物理学 2018-04-25 Nima Sedaghat , Ashish Mahabal

There is an increasing number of large, digital, synoptic sky surveys, in which repeated observations are obtained over large areas of the sky in multiple epochs. Likewise, there is a growth in the number of (often automated or robotic)…

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