Aerogel Cherenkov detector for characterizing the intense flash x-ray source, Cygnus, spectrum
نویسندگان
چکیده
منابع مشابه
Broad Band X-ray Spectrum of Cygnus X-1
We present the hard X-ray (20 − 100 keV) observations of Cygnus X-1 obtained using a large area balloon-borne Xenon filled Multi-anode Proportional Counter (XMPC) telescope. The observations were carried out during the γ 2 state of the source and we obtain a power law photon index of 1.62±0.07. To constrain the spectral shape of the source, we have analyzed the archival EXOSAT ME argon and GSPC...
متن کاملCorrelation between Break Frequency and Power Density Spectrum Slope for the X-ray Source Cygnus X-2: RXTE/PCA Data
We present results of RXTE observations of the X-ray source Cyg X-2 during 1996–1999. Its power density spectra in the 0.1–128-Hz band are fitted by a model that takes into account the power-law spectral behavior at frequencies below and above the break frequency, with an introduction of one or more Lorenz lines to describe the peaks of quasi-periodic oscillations that correspond to the horizon...
متن کاملThe aerogel threshold Cherenkov detector for the High Momentum Spectrometer in Hall C at Jefferson Lab
We describe a new aerogel threshold Cherenkov detector installed in the HMS spectrometer in Hall C at Jefferson Lab. The Hall C experimental program in 2003 required an improved particle identification system for better identification of π/K/p, which was achieved by installing an additional threshold Cherenkov counter. Two types of aerogel with n = 1.03 and n = 1.015 allow one to reach ∼ 10 pro...
متن کاملPlasma Ejection from Magnetic Flares and the X-ray Spectrum of Cygnus X-1
The hard X-rays in Cyg X-1 and similar black hole sources are possibly produced in an active corona atop an accretion disk. We suggest that the observed weakness of X-ray reflection from the disk is due to bulk motion of the emitting hot plasma away from the reflector. A mildly relativistic motion causes aberration reducing Xray emission towards the disk. This in turn reduces the reprocessed ra...
متن کاملCoherent Cherenkov radiation as an intense THz source
Diffraction and Cherenkov radiation of relativistic electrons from a dielectric target has been proposed as mechanism for production of intense terahertz (THz) radiation. The use of an extremely short high-energy electron beam of a 4th generation light source (X-ray free electron laser) appears to be very promising. A moderate power from the electron beam can be extracted and converted into THz...
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ژورنال
عنوان ژورنال: Review of Scientific Instruments
سال: 2016
ISSN: 0034-6748,1089-7623
DOI: 10.1063/1.4960541