搜索结果: 1-15 共查到“γ射线天文学 gamma-ray”相关记录16条 . 查询时间(0.188 秒)
Identification of gamma-ray emission from 3C345 and NRAO512
Galaxies: active - quasars: individual (3C 345, NRAO512, B3 1640+396) - Gamma rays: galaxies
2011/10/9
For more than 15 years, since the days of the Energetic Gamma-Ray Experiment Telescope (EGRET) on board the Compton Gamma-Ray Observatory (CGRO; 1991-2000), it has remained an open question why the pr...
X-ray flare candidates in short gamma-ray bursts
gamma-ray: bursts – radiation mechanism: non-thermal –X-rays
2011/9/30
We present the first systematic study of X-ray flare candidates in short gamma-ray bursts (SGRBs) exploiting the large 6-year Swift database with the aim to constrain the physical nature of such fluct...
Fermi Large Area Telescope Observations of the Active Galaxy 4C +55.17: Steady, Hard Gamma-Ray Emission and its Implications
Steady Hard Gamma-Ray Emission Implications
2011/9/29
We report Fermi/LAT observations and broad-band spectral modeling of the radio-loud active galaxy 4C +55.17 (z=0.896), formally classified as a flat-spectrum radio quasar. Using 19 months of all-sky s...
Last Moments in the Life of a Compact Binary System：Gravitational Waves, Gamma-Ray Bursts and Magnetar Formation
Compact Binary System Gamma-Ray Bursts Gravitational Waves Magnetar Formation
2009/7/1
Last Moments in the Life of a Compact Binary System：Gravitational Waves, Gamma-Ray Bursts and Magnetar Formation。
Supernovae and Gamma Ray Bursts。
Relativistic Outflows in Gamma-Ray Bursts。
A Possible Conection Between Magnetars and Gamma-Ray Bursts。
Radio quiet pulsar candidates among unidentified gamma-ray sources
gamma-ray sources pulsar
2009/6/5
Radio quiet pulsar candidates among unidentified gamma-ray sources。
A Determination of the Atmospheric Gamma-Ray Spectrum between 10 and 100 MeV made at High Geomagnetic Cut-Off
Atmospheric effects balloons Gamma-Ray
2009/6/4
A Determination of the Atmospheric Gamma-Ray Spectrum between 10 and 100 MeV made at High Geomagnetic Cut-Off。
An Exact Solution of the Gamma Ray Burst Arrival Time Analysis Problem
Gamma Ray Bursts triangulation
2009/5/19
An analytical solution of the GRB arrival time analysis is
presented. The errors in the position of the GRB resulting from timing and
position errors of different satellites are calculated. A simple...
This talk focuses on the various aspects we learnt from multiband
observations of GRBs both, before and during the afterglow era.
A statistical analysis to estimate the probable redshifts of host ga...
SROSS C-2 Detections of Gamma Ray Bursts and the SGR 1627-41
X-rays—supernova remnants interstellar medium shocks—Tycho’s SNR—SN 1572
2009/5/19
We present a new Chandra observation of Tycho’s supernova
remnant with the Advanced CCD Imaging Spectrometer. Multicolor Xray
imaging reveals new details of the outer shock and ejecta. At energies
...
Iowa State astrophysicists provide the eyes for new gamma ray telescope system（图）
gamma ray telescope system
2007/4/20
19-Apr-2007，AMES, Iowa -- There’s a "First Light Fiesta" in the works at Mt. Hopkins near Amado, Ariz. And Iowa State University astrophysicists will be among those enjoying the celebration of a new t...
8 March 2007—Several times a week, astronomers detect the violent death cry of a massive star -- an extraordinarily energetic release of gamma rays that takes place in just a matter of seconds to minu...
European astronomers create largest-ever catalogue of gamma-ray sources in the universe（图）
gamma-ray
2007/3/15
23 February 2007，Using data from the European Space Agency's latest orbiting gamma-ray observatory, Integral, a European team of astronomers led by Dr Antony Bird of the University of Southampton (UK)...