The project just give a repetition of a short signal which is often hard to recognize. Why not give a longer signal? And repeating a signal is quite misleading.
You'd probably get a better explanation if you asked this on the Zooniverse Pulsar Seekers discussion board.
Cheers, Mike.
Well, if you must then ... ;-)
The pulse profile plot ( top left ) is the time averaged signal amplitude, folded in the time domain for a given choice of period. The phase is marked along the horizontal axis with 0 to 1 being a single period/cycle of that pattern. The marking of phase 0 is arbitrary with respect to the signal peak in that it just reflects the beginning of the data set.
If the time series plot ( lower left ) had only one cycle showing then any signal peak that lies near the edges of the phase domain ( near 0 and 1 ) may well be missed. However if you have two cycles ( phase from 0 to 2 ) then you have a better opportunity to examine such edge cases, as you will see the full signal peak in the middle of the plot either side of phase 1. This is a good example of the situation :
Hence you can see how the peak of the pulse profile straddles the boundaries at 0, 1 and 2 but is most clearly seen at 1, and we don't have to try and imagine whether the pixels on the extreme left and right borders refer to the one peak. This applies to the frequency domain plot ( upper right ) also.
{ FWIW : IMHO this is not a good pulsar candidate as there is much narrow band signal activity on the frequency plot - seen as darker dots and horizontal lines above 1400 MHz, plus there is no vertical dark banding below 1400 MHz }
More generally the Pulsar Seekers project is asking you to assess for a pulsar candidate - given the criteria in the training mode - taking into account the detail of all four plots per signal candidate. The way I see it phrased in that training you hit YES only if all four plots are suitable, a sort of logical and of the assessments of the plots individually.
Cheers, Mike
I have made this letter longer than usual because I lack the time to make it shorter ...
... and my other CPU is a Ryzen 5950X :-) Blaise Pascal
You'd probably get a better
)
You'd probably get a better explanation if you asked this on the Zooniverse Pulsar Seekers discussion board.
Cheers, Mike.
I have made this letter longer than usual because I lack the time to make it shorter ...
... and my other CPU is a Ryzen 5950X :-) Blaise Pascal
Sorry but I simply can't
)
Sorry but I simply can't comment on that.
seewo wrote:Sorry but I
)
Well, if you must then ... ;-)
The pulse profile plot ( top left ) is the time averaged signal amplitude, folded in the time domain for a given choice of period. The phase is marked along the horizontal axis with 0 to 1 being a single period/cycle of that pattern. The marking of phase 0 is arbitrary with respect to the signal peak in that it just reflects the beginning of the data set.
If the time series plot ( lower left ) had only one cycle showing then any signal peak that lies near the edges of the phase domain ( near 0 and 1 ) may well be missed. However if you have two cycles ( phase from 0 to 2 ) then you have a better opportunity to examine such edge cases, as you will see the full signal peak in the middle of the plot either side of phase 1. This is a good example of the situation :
Hence you can see how the peak of the pulse profile straddles the boundaries at 0, 1 and 2 but is most clearly seen at 1, and we don't have to try and imagine whether the pixels on the extreme left and right borders refer to the one peak. This applies to the frequency domain plot ( upper right ) also.
{ FWIW : IMHO this is not a good pulsar candidate as there is much narrow band signal activity on the frequency plot - seen as darker dots and horizontal lines above 1400 MHz, plus there is no vertical dark banding below 1400 MHz }
More generally the Pulsar Seekers project is asking you to assess for a pulsar candidate - given the criteria in the training mode - taking into account the detail of all four plots per signal candidate. The way I see it phrased in that training you hit YES only if all four plots are suitable, a sort of logical and of the assessments of the plots individually.
Cheers, Mike
I have made this letter longer than usual because I lack the time to make it shorter ...
... and my other CPU is a Ryzen 5950X :-) Blaise Pascal
Yes, I now understand. Thkx.
)
Yes, I now understand. Thkx.
It's neat to learn more about
)
It's neat to learn more about the aftermath of processing tasks and how the data is examined.