نتایج جستجو برای: solar eclipse

تعداد نتایج: 128228  

2007
B. Mayer C. Emde

Introduction Conclusions References Tables Figures ◭ ◮ ◭ ◮ Back Close Full Screen / Esc Abstract Introduction Conclusions References Tables Figures ◭ ◮ ◭ ◮ Back Close Full Screen / Esc Printer-friendly Version Interactive Discussion EGU Abstract A solar eclipse is a rare but spectacular natural phenomenon and furthermore it is a challenge for radiative transfer modeling. Whereas a simple one-di...

2004
Vlad Popa

We present the results of the measurements performed in the occasion of the 2001 total solar eclipse, looking for visible photons emitted through a possible radiative decay of solar neutrinos. We establish lower limits for the ν2 and ν3 proper lifetimes above 10 s/eV, for neutrino masses larger than 10 eV.

2004
S. Cecchini G. Giacomelli R. Giacomelli

We present the results of the observations performed in the occasion of the June 21, 2001 total solar eclipse, looking for visible photons emitted through a possible radiative decay of solar neutrinos. We establish lower limits for the ν2 or ν3 proper lifetimes τ0/m ≥ 10 3 s/eV, for neutrino masses larger than 10−2 eV.

1999
Amitabha Ghosh

The theory of inertial induction, which has been quite successful in explaining a number of hitherto unexplained astrophysical phenomena, predicts a redshift in light grazing massive objects. The total solar eclipse on 11 August 1999 offers an opportunity of testing the theory. In this paper we predict the additional redshift of a few stars during the eclipse and urge professional astronomers t...

1999
Amitabha Ghosh

The theory of inertial induction, which has been quite successful in explaining a number of hitherto unexplained astrophysical phenomena, predicts a redshift in light grazing massive objects. The total solar eclipse on 11 August 1999 offers an opportunity of testing the theory. In this paper we predict the additional redshift of a few stars during the eclipse and urge professional astronomers t...

2017
Tuija Jokinen Jenni Kontkanen Katrianne Lehtipalo Hanna E. Manninen Juho Aalto Albert Porcar-Castell Olga Garmash Tuomo Nieminen Mikael Ehn Juha Kangasluoma Heikki Junninen Janne Levula Jonathan Duplissy Lauri R. Ahonen Pekka Rantala Liine Heikkinen Chao Yan Mikko Sipilä Douglas R. Worsnop Jaana Bäck Tuukka Petäjä Veli-Matti Kerminen Markku Kulmala

Solar eclipses provide unique possibilities to investigate atmospheric processes, such as new particle formation (NPF), important to the global aerosol load and radiative balance. The temporary absence of solar radiation gives particular insight into different oxidation and clustering processes leading to NPF. This is crucial because our mechanistic understanding on how NPF is related to photoc...

آ ک ساکسنا, , آر سیرینی واسان, , آر کوسیک, , ج سینگ, , رضا رضایی, ,

  An experiment to search for short-period intensity oscillations in the solar corona was conducted during the total solar eclipse of August 11, 1999 in Esfahan, Iran. The intensity in the continuum, centered about 4700 Å and with a passband having a half-width of 190 Å, was recorded at a counting rate of 5 Hz using six low-noise Hamamatsu R647 photomultiplier tubes. We recorded intensity value...

2013
R. P. Singh

The variability of ionospheric response to the total solar eclipse of 22 July 2009 has been studied analyzing the GPS data recorded at the four Indian low-latitude stations Varanasi (100 % obscuration), Kanpur (95 % obscuration), Hyderabad (84 % obscuration) and Bangalore (72 % obscuration). The retrieved ionospheric vertical total electron content (VTEC) shows a significant reduction (reflecte...

Journal: :Monthly Notices of the Royal Astronomical Society 1871

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