http://currentsciences.info/index.php/ctst/issue/feed International Journal of Current Trends in Science and Technology 2019-04-27T01:16:27+00:00 Dr Oziel D editor@currentsciences.info Open Journal Systems <div class="row"> <div class="col-md-12"> <div class="col-sm-4"> <div class="panel panel-default panel-front"> <div class="panel-heading"> <h4 class="panel-title"><a href="#"><img src="http://currentsciences.info/public/journals/1/cover_issue_3_en_US.jpg" alt=""></a></h4> </div> <div class="panel-body">The Medical Council of India (MCI) and The Journal also included in the standard indexing databases like CrossRef DOI, Index Copernicus (IC Value), Directory of Open Access Journals DOAJ, <div class="text-right"><a class="btn btn-info btn-sm" href="http://currentsciences.info/index.php/ctst/issue/current">Current Issue</a></div> <div class="text-right">&nbsp;</div> </div> </div> </div> <div class=""> <h1 class="hidden-xs hidden-sm">Online ISSN:0976-9730 |Print ISSN: 0976-9498</h1> <hr></div> <div class="">Paper Submission Id:&nbsp;<strong>editor@currentsciences.info&nbsp;&nbsp;</strong></div> <div class=""><strong>CrossRef Membership: Journal is a member of the prestigious CrossRef (DOI: 10.15520/ctst)&nbsp;</strong><br><hr> <div class="journal-description"> <p><strong>Inter J Curr Trends Sci Tech</strong> provides rapid publication of articles in all areas of <strong>Medical Sciences,</strong>&nbsp;<strong>Social Sciences,&nbsp; Agriculture, Life Sciences, Biotechnology, &nbsp;Management,&nbsp; Engineering, Mathematics,Technology, Pharmacy, Nursing and&nbsp;Basic Applied Sciences.</strong></p> <p>The journal allows free access&nbsp;to&nbsp;its contents, which is likely&nbsp;to&nbsp;attract more readers and citations&nbsp;to&nbsp;articles published in <strong>Inter J Curr Trends Sci Tech</strong>.</p> <p>We would like&nbsp;to&nbsp;ask you&nbsp;to&nbsp;contribute your excellent papers in <strong>Inter J Curr Trends Sci Tech</strong>. Currently, there are several papers under review consideration for the upcoming issues.</p> </div> <p class="text-justify"><br><br><br></p> </div> </div> </div> http://currentsciences.info/index.php/ctst/article/view/514 Whistlers and VLF Hiss Recorded at Jammu 2019-04-27T01:16:27+00:00 Dr. Rajou kumar Pandita rajoukumar40@yahoo.com Dr. Syed Aijaz rajoukumar40@yahoo.com <p>This paper presents interesting observations based on the long term Data of whistlers and VLF hiss emission at a low latitude ground station Jammu (Geomagn. lat. 22°16′ N, <em>L</em> = 1.17) . The simultaneous observations presented in this paper are unique and are reported for the first time from low latitude ground station Jammu. The present observation of VLF emissions and whistlers along with ESD whistlers at Jammu clearly suggest that these VLF emissions are generated in the magnetosphere due to whistler mode wave-interaction with particles. This experimental study is unlikely to be the final word on the origin of these events and further experimental confirmation will, of course, be required at low latitudes. From the dispersion analysis of the day time whistlers recorded at Jammu, it is found that all the Whistlers have extremely small dispersion (ESD) in the range of 5-10 s<sup>1/2</sup>, which clearly supports non-ducted propagation .With the advent of the satellites ,VLF receivers were placed &nbsp;on rockets and satellites. These receivers detected whistlers whose paths deviated from Earth’s magnetic field lines. Such whistlers are called unducted or non-ducted whistlers of day-time whistlers at low latitudes, completely in contrast with the earlier findings of ducted propagation of day-time whistlers.</p> <p>VLF emissions are known to originate within the ionosphere/magnetosphere but no satisfactory theory of their origin has yet been advanced. These are generally originated in the ionosphere/magnetosphere by two mechanisms, viz incoherent Cerenkov radiation mechanism and electron cyclotron resonance instability mechanisms. The generation mechanism of whistler-mode VLF hiss remain controversial inspite of extensive amount of experimental and theoretical work. A number of mechanisms have been suggested for the generation of VLF hiss from time to time. Sazhin et al.,(1993) has reviewed the generation mechanism of the VLF hiss and have projected out that the most likely energy source of VLF hiss lie in the electrons at energies below 100 electron volts precipitating to the auroral ionosphere. They have shown that initially the waves are generated due to incoherent Cerenkov radiation and they are then amplified due to beam plasma instabilities in the Cerenkov resonance.</p> 2019-04-27T00:00:00+00:00 Copyright (c)