中文
相关论文

相关论文: FIRST Extra-Galactic Surveys: Practical Considerat…

200 篇论文

Forward models of the galaxy density field enable simulation based inference as well as field level inference of galaxy clustering. However, these analysis techniques require forward models that are both computationally fast and robust to…

宇宙学与河外天体物理 · 物理学 2025-04-30 Julia Stadler , Fabian Schmidt , Martin Reinecke

The United Kingdom Infrared Telescope (UKIRT) Widefield Infrared Survey for Fe$^+$ (UWIFE) is a 180 deg$^2$ imaging survey of the first Galactic quadrant (7$^{\circ}$ < l < 62$^{\circ}$; |b| < 1.5$^{\circ}$) using a narrow-band filter…

I review the status of science with wide field surveys. For many decades surveys have been the backbone of astronomy, and the main engine of discovery, as we have mapped the sky at every possible wavelength. Surveys are an efficient use of…

天体物理学 · 物理学 2009-11-13 A. Lawrence

Multi-wavelength (MW) observations of Fast Radio Bursts (FRBs) is a key avenue to uncover the yet-unknown origin(s) of these extragalactic signals. In this proceeding, we discuss the need for precise localization to conduct MW studies. We…

高能天体物理现象 · 物理学 2023-11-07 Cherry Ng

Fast radio bursts (FRBs) are the first cosmological radio sources that vary on millisecond timescales, which makes them a unique probe of the Universe. Many proposed applications of FRBs require associated redshifts. These can only be…

高能天体物理现象 · 物理学 2023-06-28 Joscha N. Jahns , Laura G. Spitler , Charles R. H. Walker , Carlton M. Baugh

A plethora of astronomical science cases can only be achieved with high angular resolution observations, and we can expect the number of these to grow as astronomers are constrained by the size limitations of single-aperture space…

We give upper bounds on the number of exceptional radial projections of arbitrary subsets of vector spaces over finite fields. Our bounds do not depend on the dimension of the ambient space. Let $\mathbb{F}_q^d$ be the $d$-dimensional…

组合数学 · 数学 2025-12-01 Paige Bright , Ben Lund , Thang Pham

Microlensing can be used to discover exoplanets of a wide range of masses with orbits beyond ~ 1 AU, and even free-floating planets. The WFIRST mission will use microlensing to discover approximately 1600 planets by monitoring ~100 million…

地球与行星天体物理 · 物理学 2021-01-12 Somayeh Khakpash , Matthew Penny , Joshua Pepper

We explore the cosmological constraints expected from wide area XMM-type cluster surveys covering 50-200 deg2, under realistic observing conditions. We perform a Fisher matrix analysis based on cluster number counts in combination with…

宇宙学与河外天体物理 · 物理学 2011-07-26 M. Pierre , F. Pacaud , J. B. Juin , J. B. Melin , N. Clerc , P. S. Corasaniti

Supernovae are important probes of the properties of stars at high redshifts because they can be detected at early epochs and their masses can be inferred from their light curves. Direct detection of the first cosmic explosions in the…

宇宙学与河外天体物理 · 物理学 2015-10-26 Daniel J. Whalen

(Abridged) We discuss the design considerations of the EXPLORE (EXtra-solar PLanet Occultation REsearch) project, a series of transiting planet searches using 4-m-class telescopes to continuously monitor a single field of stars in the…

Neural Radiance Fields (NeRF) have demonstrated impressive performance in vision and graphics tasks, such as novel view synthesis and immersive reality. However, the shape-radiance ambiguity of radiance fields remains a challenge,…

计算机视觉与模式识别 · 计算机科学 2023-08-09 Chen Wang , Jiadai Sun , Lina Liu , Chenming Wu , Zhelun Shen , Dayan Wu , Yuchao Dai , Liangjun Zhang

We give an overview of the science case for spectroscopy of resolved stellar populations beyond the Local Group with the European Extremely Large Telescope (E-ELT). In particular, we present science simulations undertaken as part of the…

Future large space- or ground-based telescopes will offer the resolution and sensitivity to probe the habitable zone of a large sample of nearby stars for exo-Earth imaging. To this end, such facilities are expected to be equipped with a…

天体物理仪器与方法 · 物理学 2020-10-12 M. Beaulieu , P. Martinez , L. Abe , C. Gouvret , P. Baudoz , R. Galicher

Supernova cosmology surveys are traditionally time consuming, especially for the critical spectroscopic data. However, a single spectrum at maximum light may provide accurate distance estimation if recent developments hold. This could open…

宇宙学与河外天体物理 · 物理学 2021-07-07 Eric V. Linder

Precision wavefront control on future segmented-aperture space telescopes presents significant challenges, particularly in the context of high-contrast exoplanet direct imaging. We present a new wavefront control architecture that…

天体物理仪器与方法 · 物理学 2019-01-08 Ewan S. Douglas , Jared R. Males , James Clark , Olivier Guyon , Jennifer R. Lumbres , Weston A. Marlow , Kerri L. Cahoy

We recommend a conceptual design study for a spectroscopic facility in the southern hemisphere comprising a large diameter telescope, fiber system, and spectrographs collectively optimized for massively-multiplexed spectroscopy. As a…

We review the results of HI line surveys of extragalactic sources in the local Universe. In the last two decades major efforts have been made in establishing on firm statistical grounds the properties of the HI source population, the two…

星系天体物理 · 物理学 2016-01-20 Riccardo Giovanelli , Martha P. Haynes

The 10-100 keV region of the electromagnetic spectrum contains the potential for a dramatic improvement in our understanding of a number of key problems in high energy astrophysics. A deep inspection of the universe in this band is on the…

Local primordial non-Gaussianity, parameterised as $f_{\rm NL}^{\rm local}$, will be stringently constrained using state-of-the-art methods applied to next-generation galaxy redshift survey data. In this paper, in preparation for the…

‹ 上一页 1 8 9 10 下一页 ›