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Fermi-LAT Observations of the Diffuse Gamma-Ray Emission: Implications for Cosmic Rays and the Interstellar Medium
Fermi-LAT Observations Diffuse Gamma-Ray Emission Implications Cosmic Rays the Interstellar Medium
2012/2/23
The gamma-ray sky >100 MeV is dominated by the diffuse emissions from interactions of cosmic rays with the interstellar gas and radiation fields of the Milky Way. Observations of these diffuse emissio...
Rebirth of X-ray Emission from the Born-Again Planetary Nebula A 30
Rebirth X-ray Emission Born-Again Planetary Nebula
2012/2/23
The planetary nebula (PN) A 30 is believed to have undergone a very late thermal pulse resulting in the ejection of knots of hydrogen-poor material. Using multi-epoch HST images we have detected the a...
The Galactic dust-to-metals ratio and metallicity using gamma-ray bursts
Gamma-ray burst: general – ISM: abundances – dust, extinction – Galaxy: abundances – X-rays: ISM
2011/10/18
The metallicity and dust-to-metals ratio of the Galaxy are fundamental parameters in understanding the ISM, but there is still uncertainty surrounding these parameters. In this paper, the dust-to-meta...
Measurement of cosmic-ray antiproton spectrum at solar minimum with a long-duration balloon flight in Antarctica
Measurement cosmic-ray antiproton spectrum solar minimum long-duration balloon
2011/10/18
The energy spectrum of cosmic-ray antiprotons has been measured in the range 0.17 to 3.5 GeV, based on 7886 antiprotons collected by the BESS-Polar II instrument during a long-duration flight over Ant...
Herschel/HerMES: The X-ray - Infrared correlation for star-forming galaxies at z~1
X-ray - Infrared correlation star-forming galaxies
2011/9/29
For the first time, we investigate the X-ray/infrared (IR) correlation for star-forming galaxies at z~1, using SPIRE submm data from the recently-launched Herschel Space Observatory and deep X-ray dat...
X-ray spectroscopy of Abell S1101 with Chandra, XMM-Newton and ROSAT: band-pass dependence of he temperature profile and soft excess emission
X-ray spectroscopy Chandra band-pass dependence temperature profile soft excess emission
2011/9/28
We present spatially-resolved spectroscopy of the galaxy cluster Abell S1101, also known as Sersic 159-03, with Chandra, XMM-Newton and ROSAT, and investigate the presence of soft X-ray excess emissio...
T Tauri stars are young, low mass, pre-main sequence stars surrounded by an accretion disk. These objects present strong magnetic activity and powerful magnetic reconnection events. Strong shocks are ...
The Large Observatory for X-ray Timing (LOFT)
Missions X-ray timing compact objects black holes neutron stars
2011/9/27
High-time-resolution X-ray observations of compact objects provide direct access to strong-field gravity, to the equation of state of ultra-dense matter and to black hole masses and spins. A 10 m^2-cl...
Probing bulk viscous matter-dominated models with Gamma-ray bursts
Probing viscous matter-dominated Gamma-ray bursts
2011/9/27
In this paper we extend the range of consistency of a constant bulk viscosity model to redshifts up to $z\sim 8.1$. In this model the dark sector of the cosmic substratum is a viscous fluid with press...
Diffuse emission measurement with INTEGRAL/SPI as indirect probe of cosmic-ray electrons and positrons
INTEGRAL/SPI indirect probe cosmic-ray electrons positrons
2011/9/26
Significant advances have been made in the understanding of the diffuse Galactic hard X-ray continuum emission using data from the INTEGRAL observatory. The diffuse hard power-law component seen with ...
Markov Stochastic Technique to Determine Galactic Cosmic Ray Sources Distribution
Cosmic rays ISM galactic locations stochastic processes
2010/9/15
A new numerical model of particle propagation in the Galaxy has been developed, which allows the study of cosmic-ray production and propagation in 2D. The model has been used to solve cosmic ray diffu...
The big blue bump and soft X-ray excess of individual quasars
big blue bump individual quasars soft X-ray excess
2009/7/9
The big blue bump and soft X-ray excess of individual quasars。
Models for the Circumstellar Medium of Long Gamma-Ray Burst Progenitor Candidates
Circumstellar Medium Burst Progenitor Long Gamma-Ray
2009/6/30
Models for the Circumstellar Medium of Long Gamma-Ray Burst Progenitor Candidates。
Numerical simulation of the surface flow of a companion Star in a semi-detached binary system and its application To galactic supersoft x-ray sources
companion Star semi-detached binary system x-ray sources
2009/6/17
Numerical simulation of the surface flow of a companion Star in a semi-detached binary system and its application To galactic supersoft x-ray sources。
Big game hunting in the andromeda galaxy：identifying And weighing black holes in low mass x-ray binaries
andromeda galaxy low mass x-ray binaries weighing black holes
2009/6/17
Big game hunting in the andromeda galaxy：identifying And weighing black holes in low mass x-ray binaries。