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We have performed a simulation of a next generation sky survey's (Pan-STARRS 1) efficiency for detecting Earth-impacting asteroids. The steady-state sky-plane distribution of the impactors long before impact is concentrated towards small…

地球与行星天体物理 · 物理学 2011-03-31 Peter Vereš , Robert Jedicke , Richard Wainscoat , Mikael Granvik , Steve Chesley , Shinsuke Abe , Larry Denneau , Tommy Grav

We search for new variable B-type pulsators in the CoRoT data assembled primarily for planet detection, as part of CoRoT's Additional Programme. We aim to explore the properties of newly discovered B-type pulsators from the uninterrupted…

We introduce a search method for a new class of gravitational-wave signals, namely long-duration O(hours - weeks) transients from spinning neutron stars. We discuss the astrophysical motivation from glitch relaxation models and we derive a…

广义相对论与量子宇宙学 · 物理学 2011-08-08 Reinhard Prix , Stefanos Giampanis , Chris Messenger

Ultra-faint dwarf galaxies, which can be detected as resolved satellite systems of the Milky Way, are critical to understanding galaxy formation, evolution, and the nature of dark matter, as they are the oldest, smallest, most metal-poor,…

The CoRoT satellite is collecting precise time-resolved photometry for tens of asteroseismology targets. To ensure a correct interpretation of the CoRoT data, the atmospheric parameters, chemical compositions, and rotational velocities of…

太阳与恒星天体物理 · 物理学 2015-05-13 E. Niemczura , T. Morel , C. Aerts

We assess the impact of satellite glints -- rapid flashes produced by reflections of a sunlight from flat surfaces of rotating satellites -- on current and future deep sky surveys such as the ones conducted by the Zwicky Transient Facility…

天体物理仪器与方法 · 物理学 2023-10-27 Sergey Karpov , Julien Peloton

This Science White Paper, prepared in response to the ESA Voyage 2050 call for long-term mission planning, aims to describe the various science possibilities that can be realized with an L-class space observatory that is dedicated to the…

The StarLight program conceptualizes fast interstellar travel via small wafer satellites (wafersats) that are propelled by directed energy. This process is wildly different from traditional space travel and trades large and slow spacecraft…

天体物理仪器与方法 · 物理学 2020-10-28 James Bird , Linda Petzold , Philip Lubin , Julia Deacon

Insight-HXMT, the first X-ray astronomical satellite in China, aims to reveal new sources in the Galaxy and to study fundamental physics of X-ray binaries from 1\,keV to 250\,keV. It has three collimated telescopes, the High Energy X-ray…

天体物理仪器与方法 · 物理学 2020-10-01 Juan Zhang , Xiaobo Li , Mingyu Ge , Haisheng Zhao , Youli Tuo , Fei Xie , Gang Li , Shijie Zheng , Jianyin Nie , Liming Song , Aimei Zhang , Yanji Yang , Yong Chen

(Abridged) In this paper, we present a project of multi-channel wide-field optical sky monitoring system with high temporal resolution -- Small Aperture Imaging Network Telescope (SAINT) -- mostly built from off-the-shelf components and…

Swift J1749.4-2807 is a transient accreting millisecond X-ray pulsars, the first that displayed X-ray eclipses. Therefore it holds a great potential for accurate mass measurements in a low mass X-ray binary system. The determination of the…

高能天体物理现象 · 物理学 2015-05-30 P. D'Avanzo , S. Campana , T. Munoz-Darias , T. Belloni , E. Bozzo , M. Falanga , L. Stella

Transient gravitational-wave searches can be divided into two main families of approaches: modelled and unmodelled searches, based on matched filtering techniques and time-frequency excess power identification respectively. The former,…

天体物理仪器与方法 · 物理学 2018-07-25 P. Bacon , Gayathri V. , E. Chassande-Mottin , A. Pai , F. Salemi , G. Vedovato

Minimization of charged particle background in X-ray telescopes is a well known issue. Charged particles (chiefly protons and electrons) naturally present in the cosmic environment constitute an important background source when they collide…

天体物理仪器与方法 · 物理学 2015-09-09 D. Spiga , V. Fioretti , A. Bulgarelli , E. Dell'Orto , L. Foschini , G. Malaguti , G. Pareschi , G. Tagliaferri , A. Tiengo

We present design considerations for a ground-based survey for transiting exoplanets around L and T dwarfs, spectral classes that have yet to be thoroughly probed for planets. We simulate photometry for L and T targets with a variety of…

地球与行星天体物理 · 物理学 2019-10-09 Patrick Tamburo , Philip S. Muirhead

Using detailed mock galaxy redshift surveys we investigate to what extent the kinematics of large samples of satellites galaxies extracted from flux-limited surveys can be used to constrain halo masses. Previous host-satellite selection…

天体物理学 · 物理学 2009-11-10 Frank C. van den Bosch , Peder Norberg , H. J. Mo , Xiaohu Yang

We report on the methodology and first results from the Deep Lens Survey transient search. We utilize image subtraction on survey data to yield all sources of optical variability down to 24th magnitude. Images are analyzed immediately after…

Proximity-based interference is a growing threat to satellite communications, driven by dense multi-orbit constellations and increasingly agile adversarial maneuvers. We propose a hybrid simulation framework that integrates orbital maneuver…

信号处理 · 电气工程与系统科学 2025-09-03 Anouar Boumeftah , Gunes Karabulut Kurt

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…

Astronomical images in the Poisson regime are typically characterized by a spatially varying cosmic background, large variety of source morphologies and intensities, data incompleteness, steep gradients in the data, and few photon counts…

天体物理仪器与方法 · 物理学 2012-02-03 Fabrizia Guglielmetti , Rainer Fischer , Volker Dose

The Compton Spectrometer and Imager (COSI) is a NASA funded Small Explorer (SMEX) mission slated to launch in 2027. COSI will house a wide-field gamma-ray telescope designed to survey the entire sky in the 0.2--5 MeV range. Using germanium…