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We analyze the recently released CoGeNT data with a focus on their time-dependent properties. Using various statistical techniques, we confirm the presence of modulation in the data, and find a signif...
Spectroscopic analysis of interaction between an EIT wave and a coronal upflow region
Spectroscopic analysis of interaction between an EIT wave and a coronal upflow region
2011/7/29
We report a spectroscopic analysis of an EIT wave event that occurred in active region 11081 on 2010 June 12 and was associated with an M2.0 class flare. The wave propagated near circularly. The south...
Spectro-timing analysis of Cygnus X-1 during a fast state transition
X-rays: binaries, X-rays: individual: CygX-1
2011/7/25
We present the analysis of two long, quasi-uninterrupted RXTE observations of Cygnus X-1 that span several days within a 10 d interval. The spectral characteristics during this observation cover the r...
Estimates of Densities and Filling Factors from a Cooling Time Analysis of Solar Microflares Observed with RHESSI
Estimates Densities Filling Factors Solar Microflares
2011/7/20
We use more than 4,500 microflares from the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) microflare data set (Christe et al., 2008, Ap. J., 677, 1385) to estimate electron densities a...
Fast Timing Analysis of Cygnus X-1 using SPI on board INTEGRAL
Analysis Cygnus board INTEGRAL
2011/7/6
For the very first time, we report the high frequency analysis of Cyg X-1 up to hard X-ray using SPI on-board INTEGRAL. After analyzing the possible contribution fromthe background, and using INTEGRAL...
Large Variations of the coefficient $J_2$ of geopotential, and the dynamical Love number $k_2^d$ from the analysis of laser ranging to LAGEOS~1 and LAGEOS~2
Earth’s satellites geopotential tides Love numbers
2011/7/1
Secular and seasonal variations of the coefficient $J_2$ of the geopotential are studied from the analysis of laser measurements of distances to the geodetic satellites LAGEOS~1 (1988--2003) and LAGEO...
Multi-frequency emission analysis and constraining redshift of 3C 66A
BL Lacertae objects individual galaxies active gamma rays general
2010/11/1
The emission mechanism of TeV blazar 3C 66A is studied by employing the multi-wavelength
observational data. The GeV spectrum observed by Fermi-LAT can’t be explained by pure synchrotron self-Compton...
A Bayesian analysis of the 27 highest energy cosmic rays detected by the Pierre Auger Observatory
High Energy Astrophysical Phenomena (astro-ph.HE) High Energy Physics - Phenomenology (hep-ph)
2010/10/5
It is possible that ultra-high energy cosmic rays (UHECRs) are generated by active galactic nuclei (AGNs), but there is currently no conclusive evidence for this hypothesis. Several reports of correla...