Monte Carlo studies on the sensitivity of the HEGRA imaging atmospheric Čerenkov telescope system in observations of extended γ-ray sources
نویسنده
چکیده
In this paper, we present the results of Monte Carlo simulations of atmospheric showers induced by diffuse γ-rays as detected by the high-energy gamma-ray astronomy (HEGRA) system of five imaging atmospheric Čerenkov telescopes (IACTs). We have investigated the sensitivity of observations on extended γ-ray emission over the entire field of view of the instrument. We discuss a technique to search for extended γ-ray sources within the field of view of the instrument. We give estimates for HEGRA sensitivity of observations on extended TeV γ-ray sources. PACS: 95.55.Ka; 95.55.Vj; 96.40.Pq
منابع مشابه
Effectiveness of TeV γ-ray observations at large zenith angles with a stereoscopic system of imaging atmospheric Čerenkov telescopes
The sensitivity of imaging atmospheric Čerenkov telescopes (IACTs) in TeV γ-ray observations reachs its maximum at small zenith angles (Θ ≤ 30◦) which provide the minimum attainable energy threshold of an instrument. However, for a specific telescope site a number of γ-ray sources, or source candidates, can only be observed at much larger zenith angles (Θ ≤ 60◦). Moreover the observations at la...
متن کاملPerformance of the Stereoscopic System of the HEGRA Imaging Air Čerenkov Telescopes: Monte Carlo Simulations & Observations
Based on the Monte Carlo simulations we have studied the performance of the HEGRA system of imaging air Čerenkov telescopes (IACTs) in its present configuration of 4 IACTs as well as in its future final configuration of 5 IACTs. Here we present the results on the basic characteristics of the IACT system which are used in the standard data analysis procedure, i.e., the collection areas, the dete...
متن کاملAtmospheric Čerenkov Telescopes: A Next-Generation Detector for Ground-Based High Energy Gamma-ray Astronomy
The construction of the H.E.S.S. (High Energy Stereoscopic System), a superior system of four 12 m imaging atmospheric Čerenkov telescopes, has been completed recently in the Namib desert close to Windhoek, at 1800 m above sea level. This new generation of ground-based gamma-ray detectors has an energy threshold of about 100 GeV in observations at zenith and a sensitivity of about 1% Crab flux ...
متن کاملThe H.E.S.S. Imaging Atmospheric Cherenkov Telescope Array is currently the most sensitive
The H.E.S.S. Imaging Atmospheric Cherenkov Telescope Array is currently the most sensitive instrument for Very High Energy (VHE) γ-ray observations in the energy range of about 0.1-10 TeV. During more than two years of operation with the complete 4-telescope array, many galactic and extragalactic VHE γ-ray sources have been discovered. With its superior sensitivity and its large field-of-view c...
متن کاملAnalysis Strategy for Large-Zenith-Angle-Observations with the HEGRA Cherenkov Telescope CT1
Cherenkov telescope observations at zenith angles > 70o are capable of providing large collection areas. This improves the detection efficiency for photons at very high energies. In order to understand the telescope’s performance extended Monte Carlo studies have been made taking the first HEGRA Cherenkov telescope CT1 as an example. First results of these studies will be presented.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2002