搜索结果: 1-15 共查到“天体物理学 nature”相关记录20条 . 查询时间(0.125 秒)
2018年8月9日，国际顶级学术期刊Nature以“Engineering of robust topological quantum phases in graphene nanoribbons”为题报道了上海交通大学物理与天文学院王世勇特别研究员与瑞士材料联邦科学与技术实验室Roman课题组、德国马普所Klaus Mullen课题组、美国伦斯勒理工大学Vincent Muller课题组以及德国...
《自然-天文学》（Nature Astronomy）创刊号报道中国科学院紫金山天文台史生才研究员及合作者揭示了南极冰穹A观测宇宙的太赫兹远红外新窗口（图）
《自然-天文学》 研究员 南极冰 观测宇宙 太赫兹 远红外
2016/12/13
太赫兹至远红外谱段（频率约0.3~15THz，波长1毫米~20微米）是观测宇宙的独特波段，如孕育恒星的冷暗气体及尘埃辐射，示踪星际物质循环过程的丰富分子转动谱线及原子精细结构谱线。但是，受大气中水汽吸收的影响，地球上绝大部分区域在这一电磁谱段均不透明。南极冰穹A（Dome A）具有高海拔（4093米）和极低温（可低达零下80度）的特点，水汽沉降量仅为国际著名天文台址--夏威夷Mauna Kea的十...
自然出版集团于2014年12月18日正式出版《2014自然指数-中国》（Nature Index 2014 China），分析了中国各地区科研机构与高校的2014自然指数（Nature Index，简称NI）的情况。其中，该期刊专门刊登了对于南京大学2014自然指数的评论。在2013年，南京大学在68种NI刊物上共发表论文391篇，自然指数值为194.6，在全国高校中排名第3位。
Unveiling the nature of IGR J17177-3656 with X-ray, NIR and Radio observations
accretion accretion disks – X-rays binaries – binaries
2011/8/24
We report on the first broad-band (1-200 keV) simultaneous Chandra-INTEGRAL observations of the recently discovered hard X-ray transient IGR J17177-3656 that took place on 2011, March 22, about two we...
Unveiling the nature of IGR J16283-4838
X-rays binaries – X-rays individuals IGR J16283− 4838
2010/11/11
Context. One of the most striking discoveries of the INTEGRAL observatory is the existence of a previously unknown population of X-ray sources in the inner arms of the Galaxy. The investigations of th...
The nature of nuclear Halpha emission in LINERs
Galaxies:active Galaxies:nuclei Galaxies evolution X-ray:galaxies
2010/11/10
To get insight in the nature of the ionized gas in the nuclear region of LINERs we have performed a study of HST Hα imaging of 32 LINERs. The main conclusion from this analysis is that for the large m...
The nature of assembly bias - I. Clues from a LCDM cosmology
cosmology large-scale structure of Universe - cosmology theory -cosmology dark matter - galaxies
2010/11/11
We present a new proxy for the overdensity peak height for which the large-scale clustering of haloes of a given mass does not vary significantly with the assembly history.
Exploring the Nature of the Brightest Hyper-luminous X-ray Source
accretion accretion disks – X-rays binaries – X-rays individual (ESO 243-49 HLX-1)
2010/11/11
The small subset of hyper-luminous X-ray sources with luminosities in excess of 1041 erg s−1 are hard to explain without the presence of an intermediate mass black hole, as significantly super-...
On the Nature of the HII Regions in the Extended Ultraviolet Disc of NGC 4625
galaxies abundances galaxies structure galaxies ISM galaxies individual NGC 4625
2010/11/12
Using deep Subaru/FOCAS spectra of 34 Hii regions in both the inner and outer parts of the extended ultraviolet (XUV) disc galaxy NGC 4625 we have measured an abundance gradient out to almost 2.5 time...
The nature of
Gamma rays bursts – Techniques photometric
2010/11/10
Context. Thirteen years after the discovery of the first afterglows, the nature of dark gamma-ray bursts (GRB) still eludes explanation:while each long-duration GRB typically has an X-ray afterglow, o...
ACCESS III: The Nature of Star Formation in the Shapley Supercluster
Star Formation the Shapley Supercluster
2011/1/10
We present a joint analysis of panoramic Spitzer/MIPS mid-infrared and GALEX ultraviolet imaging of the Shapley supercluster at z=0.048. Combining this with spectra of 814 supercluster members and 1.4...
The global dust SED: Tracing the nature and evolution of dust with DustEM
Galaxy Astrophysics (astro-ph.GA)
2011/1/4
The Planck and Herschel missions are currently measuring the farIR-mm emission of dust, which combined with existing IR data, will for the first time provide the full SED of the galactic ISM dust emis...
A Multi-Wavelength Study of the Nature of Type 1.8/1.9 Seyfert Galaxies
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2011/1/4
We focus on determining the underlying physical cause of a Seyfert galaxy's appearance as type a 1.8 or 1.9. Are these "intermediate" Seyfert types typical Seyfert 1 nuclei with reddened broad-line re...
The Nature of Primordial Fluctuations from Anisotropic Inflation
Primordial Fluctuations Anisotropic Inflation
2010/3/9
We study the statistical nature of primordial fluctuations from an anisotropic inflation which is realized by a vector field coupled to an inflaton. We find a suitable gauge, which we call the canonic...
Orbital elements for bu 1240 ab. nature of the c and d components
Orbital elements c and d components bu 1240 ab
2009/7/10
Orbital elements for bu 1240 ab. nature of the c and d components。