搜索结果: 1-15 共查到“知识库 大爆炸宇宙论”相关记录35条 . 查询时间(3.345 秒)
Pre-big bang collapsing universe from modern Kaluza-Klein theory of gravity
Pre-big bang collapsing universe modern Kaluza-Klein theory gravity
2011/10/18
We study the collapse of the universe described by a scalar field spherically symmetric collapse of a system described by a massless scalar field from a 5D Riemann-flat canonical metric, on which we m...
从理论上分析了宇宙学红移和引力红移的疑难，包括膨胀方式疑难以及质量分布疑难，研究发现，光子衰老假说与理论分析一致。
残余引力波、微波背景辐射及其探测
残余引力波 宇宙微波背景辐射 探测 宇宙学
2011/9/26
本文讨论了宇宙残余引力波的产生、给出了残余引力波的解析谱，以及作为初始条件的极早期暴涨过程的影响，同时给出了残余引力波作为源所产生的微波背景辐射的温度各向异性和偏振的解析谱，其中包括了宇宙再电离过程对于谱的修正。讨论了目前引力波探测方法和现状、着重研究了通过微波背景辐射探测宇宙残余引力波的方法和存在的问题，尤其是宇宙再电离导致的困难。
GRB091127/SN2009nz and the VLT/X-shooter spectroscopy of its host galaxy: probing the faint end of the mass-metallicity relation
Gamma-rays bursts: individual: GRB091127 – supernovae: individual: SN2009nz – Galaxies: ISM– Galaxies: evolution
2011/10/12
We perform a detailed study of the gamma-ray burst GRB091127/SN2009nz host galaxy at z=0.490 using the VLT/X-shooter spectrograph in slit and integral-field unit (IFU). From the analysis of the optica...
Higgs inflation in minimal supersymmetric SU(5) GUT
Higgs inflation minimal supersymmetric
2011/10/14
The Standard Model Higgs boson with large non-minimal coupling to the gravitational curvature can drive cosmological inflation. We study this type of inflationary scenario in the context of supersymme...
I review the characteristics of cluster populations in other galaxies, with particular emphasis on young star clusters and a comparison with the (known) open cluster population of the Milky Way. Young...
U Sco 2010 outburst: observational evidence of an underlying ONeMg white dwarf
stars: individual: USco –novae, cataclysmic variables
2011/10/12
This paper presents U Sco nebular spectra collected in the period March-May 2010 after the binary outburst on Jan 28, 2010. The spectra display strong [Ne V] and [Ne III] lines that can be used to com...
Life might be rare despite its early emergence on Earth: a Bayesian analysis of the probability of abiogenesis
Life might despite early emergence Earth
2011/10/12
Life arose on Earth sometime in the first few hundred million years after the young planet had cooled to the point that it could support water-based organisms on its surface. The early emergence of li...
Radio properties of supernova outbursts remain poorly understood despite longstanding campaigns following events discovered at other wavelengths. After ~ 30 years of observations, only ~ 50 supernovae...
We work out an effective theory of accelerated expansion to describe general phenomena of inflation and acceleration (dark energy) in the Universe. Our aim is to determine from theoretical grounds, in...
The effects of X-ray absorption variability in NGC 4395
galaxies: active – galaxies: individual: NGC 4395 – X-rays: galaxies
2011/10/8
We present a new X-ray analysis of the dwarf Seyfert galaxy NGC 4395, based on two archival XMM-Newton and Suzaku observations. This source is well known for a series of remarkable properties: one of ...
We present an analysis of the B-band and V-band rise-time distributions of nearby Type Ia supernovae (SNe Ia). We use a two-stretch template-fitting method to measure the rise and decline of BV light ...
EVLA Nova Project Observations of the Classical Nova V1723 Aquilae
Project Observations Classical Aquilae
2011/10/8
We present radio light curves and spectra of the classical nova V1723 Aql obtained with the Expanded Very Large Array (EVLA). This is the first paper to showcase results from the EVLA Nova Project, wh...
The Optical Gravitational Lensing Experiment. Dwarf Novae in the OGLE Data. I. Three New Dwarf Novae: One in the Period Gap and Two Longer Period Objects
novae, cataclysmic variables – binaries: close – surveys
2011/10/8
We report serendipitous discovery of three new dwarf novae which eruptions in 2010 were observed by the ongoing microlensing survey OGLE-IV. All three objects are located in the Galactic bulge fields ...
Gamma Ray Burst origin and their afterglow: story of a discovery and more
Burst origin afterglow: story discovery more
2011/9/29
In this paper we review the story of the BeppoSAX discovery of the Gamma Ray Burst afterglow and their cosmological distance, starting from their first detection with Vela satellites and from the effo...