搜索结果: 1-15 共查到“天文学 transient”相关记录22条 . 查询时间(0.022 秒)
Zwicky Transient Facility Opens Its Eyes to the Volatile Cosmos（图）
Zwicky Transient Facility Opens Its Eyes Volatile Cosmos
2017/11/24
A new robotic camera with the ability to capture hundreds of thousands of stars and galaxies in a single shot has taken its first image of the sky, an event astronomers refer to as "first light." The ...
Chandra Observations of the Bursting X-Ray Transient SAX J1747.0–2853 during Low-Level Accretion Activity
SAX J1747.0–2853 stars
2014/12/26
We present Chandra/ACIS observations of the bursting X-ray transient SAX J1747.0-2853 performed on 2001 July 18. We detected a bright source at the position of R.A. = 17h47m02.s60 and decl. = -28°52'5...
Supernova caught in the act by Palomar Transient Factory
Supernova caught in the act Palomar Transient Factory
2014/6/12
Supernovae—stellar explosions—are incredibly energetic, dynamic events. It is easy to imagine that they are uncommon, but the universe is a big place and supernovae are actually fairly routine. The pr...
Electromagnetic follow-up of gravitational wave transient signal candidates
Electromagnetic follow-up gravitational wave transient signal candidates
2012/2/24
Pioneering efforts aiming at the development of multi-messenger gravitational wave and electromagnetic astronomy have been made. An electromagnetic observation follow-up program of candidate gravitati...
Variable and Transient Radio Sources in the FIRST Survey
Variable Transient Radio Sources FIRST Survey
2011/10/20
A comprehensive search for variable and transient radio sources has been conducted using ~55,000 snapshot images of the FIRST survey. We present an analysis leading to the discovery of 1,627 variable ...
The unusual radio transient in M82: an SS 433 analogue?
stars:radio:continuum – stars:X-rays:binaries – Galaxies:individual:M82– X-rays:galaxies
2011/10/19
In this paper we discuss the recently discovered radio transient in the nuclear region of M\,82. It has been suggested that this source is an X-ray binary, which, given the radio flux density, would r...
Real-time, fast radio transient searches with GPU de-dispersion
Real-time fast radio transient searches de-dispersion
2011/10/8
The identification, and subsequent discovery, of fast radio transients through blind-search surveys requires a large amount of processing power, in worst cases scaling as $\mathcal{O}(N^3)$. For this ...
VERITAS Observations of the Unusual Extragalactic Transient Swift J164449.3+573451
VERITAS Observations Unusual Extragalactic Transient Swift
2011/9/30
We report on very-high-energy ($>$100 GeV) gamma-ray observations of Swift J164449.3+573451, an unusual transient object first detected by the {\it Swift} Observatory and later detected by multiple ra...
A 22-year Southern Sky Survey for Transient and Variable Radio Sources using the Molonglo Observatory Synthesis Telescope
radio continuum: general stars: pulsars:general stars: flare techniques:image processing catalogues supernovae general
2010/11/9
We describe a 22-year survey for variable and transient radio sources, performed with
archival images taken with the Molonglo Observatory Synthesis Telescope (MOST).
This survey covers 2775 deg2 of ...
Quasi-Stationary and Transient Patterns in Jets
galaxies jets – stars binaries general – stars winds outflows
2010/11/10
Apparent evolution of relativistic flows as traced by radio emission results from a ombination of several factors related to propagation of relativistic blobs or shocks, velocity,density and pressure ...
IGR J16328-4726: a new candidate Supergiant Fast X-ray Transient
High Energy Astrophysical Phenomena (astro-ph.HE)
2011/1/7
The unidentified source IGR J16328-4726 was covered with INTEGRAL observations for a long period (~9.8Ms) and was undetectable for most of the time while showing a very recurrent micro-activity with a...
Acoustic transient event reconstruction and sensitivity studies with the South Pole Acoustic Test Setup
Instrumentation and Methods for Astrophysics (astro-ph.IM)
2011/1/5
The South Pole Acoustic Test Setup (SPATS) consists of four strings instrumented with seven acoustic sensors and transmitters each, which are deployed in the upper 500 m of the IceCube holes.
Analysis of Plasma and Field Conditions during Some Intensely Geoeffective Transient Solar/Interplanetary Disturbances of Solar Cycle 23
Earth geomagnetic storm Sun'solar and wind magnetosphere coupling
2010/9/17
The problem of solar wind–magnetosphere coupling is investigated for intense geomagnetic storms (Dst ≤ −100 nT) that occurred during solar cycle 23. For this purpose interplanetary plasma and fi...
Transient Perturbations and their Effects in the Heliosphere, the Geomagnetosphere, and the Earth’s Atmosphere: Space Weather Perspective
Space weather geomagnetic storm cosmic ray Forbush decrease interplanetary shock coronal mass ejection
2010/9/16
We discuss the effects of certain dynamic features of space environment in the heliosphere, the geo-magnetosphere, and the earth’s atmosphere. In particular, transient perturbations in solar wind plas...
Long-term variability in the quiescent x-ray transient v404 cyg
Long-term variability quiescent x-ray transient v404 cyg
2009/6/17
Long-term variability in the quiescent x-ray transient v404 cyg。