Volume : 6, Issue : 5, May - 2017

Variation of Secondary Cosmic Gamma Ray Flux during Venus Transit on June 6, 2012 at Udaipur, India

Devendrapareek, S. N. A. Jaaffrey, Himadri T. Daspattnayak, Manish Shrimali

Abstract :

<p>&nbsp;<span style="font-family: &quot;Times New Roman&quot;, serif; text-align: justify;">We report the v</span><span style="font-family: &quot;Times New Roman&quot;, serif; text-align: justify;">ariation of secondary cosmic gamma ray </span><span style="font-family: &quot;Times New Roman&quot;, serif; text-align: justify; letter-spacing: -0.15pt;">flux</span><span style="font-family: &quot;Times New Roman&quot;, serif; text-align: justify;"> during celestial event Venus </span><span style="font-family: &quot;Times New Roman&quot;, serif; text-align: justify;">transit </span><span style="font-family: &quot;Times New Roman&quot;, serif; text-align: justify;">on June 6, 2012</span><span style="font-family: &quot;Times New Roman&quot;, serif; text-align: justify;">at Udaipur. Th</span><span style="font-family: &quot;Times New Roman&quot;, serif; text-align: justify;">e collected data as a function of time</span><span style="font-family: &quot;Times New Roman&quot;, serif; text-align: justify;"> using </span><span style="font-family: &quot;Times New Roman&quot;, serif; text-align: justify;">ground based </span><span style="font-family: &quot;Times New Roman&quot;, serif; text-align: justify;">NaI(Tl) scintillation detector were taken</span><span style="font-family: &quot;Times New Roman&quot;, serif; text-align: justify;">. The data analysis showed the decrease in secondary cosmic gamma ray flux on June 6, 2012 during the Venus t</span><span style="font-family: &quot;Times New Roman&quot;, serif; text-align: justify;">ransit of about</span><span style="font-family: &quot;Times New Roman&quot;, serif; text-align: justify;">2 % </span><span style="font-family: &quot;Times New Roman&quot;, serif; text-align: justify;">due to blocking of solar energetic particle (SEP) on the Earth.</span></p> <p class="MsoNormal" style="text-align:justify;text-justify:inter-ideograph;&#10;line-height:150%;mso-outline-level:1"><span style="font-size: 12pt; line-height: 150%; font-family: &quot;Times New Roman&quot;, serif;"><o:p></o:p></span></p>