IARA - Italian Amateur Radio Astronomy

Campo di Ricerca METEORE

The Lyrids meteor stream has a medium activity and its
origin is cometary. The stream occurs in the last days of April and the maximum of activity occurs in the days 22-23 April. The Lyrids were studied in 2007 using radio observations. The radio data were obtained using the meteor scatter techniques. The activity of the stream has been analyzed using the method SVB. This method allows to separate from the observed datas the sporadic activity and the observability function of the forward-scatter apparatus and from these to obtain the true activity of the stream. The data were taken from the Radio Meteor Observation Bullettins. The purpose
of this analysis is the definition of the main characteristics of the stream. The solar longitude of the maximum of the activity is λ0 = 32.4° ± 0.2°.
The purpose of this work is to analyse a meteor shower making use of a parameter easily comparable, that is the position of the maximum of activity. In fact we studied the action of Geminids, an active meteor shower we examined in December.

We had not acquired the data, but they were given to us by the association "Astrofili Bolognesi" that had built a radio device based on the principle of forward-scatter.

These results were compared with the others taken from the “Meteor Radio Orservating Bulletin.

In a second moment we studied the actions of the shower analysing that data taken from the archive provided by the “International Meteor Organization”.

In the end, the results obtained from the radio were compared to those emerged from the visual technique; and finally we compared this data with the scientific literature. We particularly pointed out how the meteor shower of Geminids is part of a more complex meteor stream, where there seems to be a presence of other two showers with similar characteristics.
Attachments:
Download this file (Le Geminidi nel 2013.pdf)Le Geminidi nel 2013442 kB
The Eta Aquarids meteor stream has a medium activity and its origin is cometary. Their parent body is the comet Halley. The stream occurs in the first days of May and the maximum of activity occurs in the days from 5 to 7 April. The Eta Aquarids were studied in 2013 using radio observation. The radio data were obtained using the meteor scatter techniques. The data were taken from the RA.M.BO. project. The purpose of this analysis is the definition of main characteristics of the stream. The solar longitude of the maximum of the activity is λ0 = 45.61° ± 0.02°.
The Eta Aquarids meteor stream has a medium activity and its origin is cometary. The stream occurs in the first days of May and the maximum of activity occurs in the day 5 for visual and 7 for radar observations. The Eta Aquarids were studied from 2004 to 2008 using radio observations. The radio data were obtained using the meteor scatter techniques. The activity of the stream has been analyzed using the method SVB. This method allows to separate from the observed datas the sporadic activity and the observability function of the forward-scatter apparatus and from these to obtain the true activity of the stream. The data were taken from the Radio Meteor Observation Bullettins. The purpose of this analysis is the definition of the main characteristics of the stream. The solar longitude of the maximum of the activity is λ0 = 45.8° ± 0.2°.
Attachments:
Download this file (Le Eta-Aquaridi nel 2004-2008.pdf)Le Eta-Aquaridi nel 2004-2008504 kB
The Lyrids meteor stream has a medium activity and its origin is cometary. Their parent body is the comet Thatcher, that passed the last time near Earth in 1861. The stream occurs in the last days of April and the maximum of activity occurs in the day 22 April. The Lyrids were studied in 2005 and 2006 using radio observations. The radio data were obtained using the meteor scatter techniques. The data were taken from the Radio Meteor Observation Bullettins. The purpose of this analysis is the definition of a profile for the activity of the swarm during the maximum. From the profile they have been defined the main characteristics of the stream. The solar longitude of the maximum of the activity is λ0 = 32.18° ± 0.02° in 2005 and λ0 = 32.01° ± 0.02° in 2006. The data show that the maximum is characterized only from a peak.
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