We examine the 0.1 to 10.0 keV X-ray spectrum of the bright nuclear LINER galaxy NGC 1052, one of two elliptical galaxies known to contain a luminous H2O maser. The observed 2.0 − 10.0 keV spectrum is unusually flat (photon index Γ ∼ 0.2) and best described as intrinsically power-law shaped nuclear flux that is either (1) attenuated by a complex absorber with ∼ 70% of the nuclear flux absorbed ...

We present INTEGRAL and XMM-Newton observations of the prompt γ-ray emission and the X–ray afterglow of GRB 030227 , the first GRB for which the quick localization obtained with the INTEGRAL Burst Alert System (IBAS) has led to the discovery of X–ray and optical afterglows. GRB 030227 had a duration of about 20 s and a peak flux of ∼1.1 photons cm −2 s −1 in the 20-200 keV energy range. The tim...

We present an extended map in the [CII] 158 μm fine structure line of the Rosette Molecular Cloud Complex, obtained with the Far Infrared Fabry-Perot Imaging Spectrometer FIFI onboard the NASA Kuiper Airborne Observatory. Very weak but significant C+ emission was found deep in the cloud at a distance of around 25 pc from the central OB cluster. The observed intensity distribution is consistent ...

Plasma-induced charging of patterned-dielectric structures during device fabrication can cause structural and electrical damage to devices. In this work, we report on vacuum-ultraviolet VUV radiation-induced charge depletion in plasma-charged patterned-silicon-oxide dielectric wafers. Charge depletion is studied as a function of photon energy and the aspect ratio of hole structures. The wafers ...

An analytical expression is given for the total flux amplification of a large distant source due to the presence of a small foreground gravitational lens. In the weak lensing limit, the result is independent of the internal density profile of the lensing mass. By comparing the above with the behavior (deflection) of light rays from the outer boundary of the souce, which do not pass through the ...

We study theoretically by means of quantum electrodynamics the vortex radiation a relativistic electron in uniform magnetic field. The exact expressions for probability emission photon with certain angular momentum are found. classical asymptotics ħ→0 this does not match flux density calculated method using symmetrized energy-momentum tensor. Although integrated over directions is same both cas...

Heat transfer coefficient in nucleate pool boiling near critical heat flux at least one orderhigher than the convectional heat transfer modes. In this paper, an experimental setup isdesigned and fabricated to investigate the mechanism of heat transfer from boiling surface tobulk liquid near critical heat flux. The images of pool boiling near the high heat flux regionreveals that the individual ...