Freitag, 11. September 2015

Daytime meteor shower - DSX 221 - 2014 - Sextantids

Dear Friends
if we talk about a meteor shower https://en.wikipedia.org/wiki/Meteor_shower
clearly all we understand  a stream of meteors, optically visible in the night, originating from a common radiant point https://en.wikipedia.org/wiki/Radiant_(meteor_shower) on the black sky. But if the radiant point is close to our Sun, then the originated daytime meteors are no longer be optically visible because  "obscured" or, if you want, masked by the light of our Sun https://en.wikipedia.org/wiki/Sun  . The only way to detect them is to collect their radio echoes by a radio station. This was exactly the case of the  daytime meteor shower DSX 221 - Sextantids 2014, presumed active in the observing period 30/09/2014 - 05/10/2014, radio observed by the EurAstro Radio Station (EARS) operated by myself. In my presentation at the IMC 2015 in Mistelbach, I concluded that the radio observation of DSX 221 by EARS revealed no maximum associatable with DSX 221 when its radiant point was above the horizon, and no important difference in the mass indexes (1,5 - 2,5) of the sporadic meteors http://www.spaceweather.com/meteoroutlook/sporadics.html  in the periods in which the DSX 221 radiant point was above or below the horizon. The conclusion is that, if a possible activity of DSX 221 was present in said observing period it was well below the activity of the sporadic meteors. The images show you some moments of my presentation at IMC 2015 in which I illustrated to the public the same above mentioned conclusions.
Salutations
Giancarlo













    

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