Study of Secondary Cosmic Rays and Astronomical X-Ray Sources using Small Stratospheric Balloons  

作　　者：Rupnath Sikdar Sandip K.Chakrabarti Debashis Bhowmick 

机构地区：[1]Indian Centre for Space Physics,466,Barakhola,Singabari Road,Netai Nagar,Kolkata,700099,West Bengal,India

出　　处：《Research in Astronomy and Astrophysics》2024年第6期94-109,共16页天文和天体物理学研究（英文版）

摘　　要：The X-ray sources of the universe are extraterrestrial in nature which emit X-ray photons.The closest strong X-ray source is the Sun,which is followed by various compact sources such as neutron stars,black holes,the Crab pulsar,etc.In this paper,we analyze the data received from several low-cost lightweight meteorological balloon-borne missions launched by the Indian Centre for Space Physics.Our main interest is to study the variation of the vertical intensity of secondary cosmic rays,the detection of strong X-ray sources,and their spectra in the energy band of^(1)0–80 keV during the complete flights.Due to the lack of an onboard pointing system,low exposure time,achieving a maximum altitude of only~42 km,and freely rotating the payload about its axis,we modeled the background radiation flux for the X-ray detector using physical assumptions.We also present the source detection method,observation of the pulsation of the Crab(^(3)3 Hz),and spectra of some sources such as the quiet Sun and the Crab pulsar.

关 键 词：X-rays:stars BALLOONS instrumentation:detectors 

分 类 号：P172.2[天文地球—天文学]