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Title: Transition radiation as a tool for radio detection of ultra high energy neutrinos
Authors: Sinha, Kalpana Roy
Datta, Pranayee
Keywords: Radio Pulses;Radio Emission;Transition Radiation Mechanism;Ultra High Energy Neutrinos;Extensive Ice Shower;Lunar Regolith Shower
Issue Date: Feb-2012
Publisher: NISCAIR-CSIR, India
PACS No.: 95.85.Ry; 41.60.Dk
Abstract: High energy neutrinos passing through the Antarctic ice and lunar regolith can produce radio pulses. A good number of experimental groups have been continuing investigations on these radio pulses. Along with VHF -UHF radio pulses, VLF-LF-MF radio pulses are also emitted from the Antarctic ice-air interface and lunar regolith–vacuum interface due to excess negative charge of the extensive ice shower (EIS) and lunar regolith shower (LRS) produced by neutrinos. In this paper, some important aspects of VLF-LF-MF radio emission (RE) from EIS and LRS in the ultra high energy (UHE) range have been studied theoretically on the basis of the transition radiation (TR) mechanism. A moon-based experimental set up for receiving lunar radio pulses and then transmitting the same to earth-based or lunar orbital satellite borne radio telescope has also been proposed. Simultaneous investigation of VHF-UHF and VLF-LF-MF RE could give more confirmed information of the original event characteristics. RE model in the framework of TR for EIS & LRS exhibits significant characteristics with respect to frequency, shower size and zenith angle variation and hence, TR mechanism can be utilized as a tool for radio detection of UHE particles in the VLF-LF-MF band. On-going projects of EIS & LRS may incorporate radio channels for <10 MHz to widen the scope of radio detection of UHE particles.
Page(s): 7-16
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.41(1) [February 2012]

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