[radioastro] Re: Io-B 110909 to 110910 UT
- From: Victor Herrero <hubbleed@xxxxxxxxx>
- To: Laurent Denis <laurent.denis@xxxxxxxxxxxxx>, Martin Wright <ducksuit@xxxxxxxxxxxxx>, Radio JOVE NASA GSFC <radiojove@xxxxxxxxxxxxxxxxxxxxxx>
- Date: Mon, 12 Sep 2011 14:58:40 -0700
Hello Laurent
May I request (with many thanks in advance) spectral images at 150 ms time
resolution near the following times:
110909 233200 UT
110909 233940 UT
110909 234720 UT
110909 235500 UT
The data will be used by Mr. Martin Wright for a comparative study of his
observations from the United Kingdom with your observations from France.
I thank You and the Nancay Radio Astronomy Station of Paris Observatory for
your help.
Regards
Victor
On Mon, Sep 12, 2011 at 11:04 AM, Martin Wright <ducksuit@xxxxxxxxxxxxx>wrote:
> **
>
> Victor,****
>
> ** **
>
> First let me correct a mistake in my original post – my receivers are set
> about 200 kHz apart (not 20 kHz).****
>
> ** **
>
> Yes, it would be good to have a closer look at the Nancay data.****
>
> ** **
>
> The swapping between frequencies on my charts occurs mostly between 23:30
> (110909) and 00:30 (110910) so this would be a good range to study in more
> detail.****
>
> In particular, 23:32 to 23:55 on 110909 shows about 6 swaps between the 2
> frequencies I use.****
>
> As you point out, the left polarisation shows lots of frequency modulation
> bands corresponding to these times. Maybe that is responsible for the shifts
> that I recorded?****
>
> ** **
>
> Regards,****
>
> ** **
>
> Martin.****
>
> ** **
>
> ** **
> ------------------------------
>
> *From:* Victor Herrero [mailto:hubbleed@xxxxxxxxx]
> *Sent:* 12 September 2011 18:34
> *To:* **Martin Wright**; Radio JOVE NASA GSFC; Laurent Denis
> *Subject:* Re: Io-B 110909 to 110910 UT****
>
> ** **
>
> Hello Martin and All
>
> Your charts are very interesting.
> This Io-B was observed at Nancay between 15 and 34 MHz, including 20 MHz of
> course. See my post:
>
> http://herrero-radio-astronomy.blogspot.com/2011/09/beautiful-io-b-followed-by-non-io-at.html
>
> It shows strong radiation reaching 80 dB above background (at times) in
> both right and left circular polarization. Left shows very strong
> ionospheric modulations, changing in slope and spacing.
>
> To study this event in more detail we can ask Laurent Denis (Technical
> Director of the Nancay Decametric Array) for more detailed spectra, similar
> to the ones shown in:
>
> http://herrero-radio-astronomy.blogspot.com/2011/08/nancay-spectra-of-io-b-110802-at-150-ms.html
>
> Would you like to do that ?
> The data is voluminous, what times would be most interesting for detailed
> comparison with your charts, at 150 ms per pixel resolution ?
>
> I copy Laurent Denis.
>
> Many thanks
> Best regards
> Victor
> http://herrero-radio-astronomy.blogspot.com/
>
> ****
>
> On Mon, Sep 12, 2011 at 9:53 AM, **Martin Wright** <ducksuit@xxxxxxxxxxxxx>
> wrote:****
>
> Io-B on 110909 through to 110910 UT.****
>
> ****
>
> This sounded like all L-bursting.****
>
> ****
>
> I have 2 receivers set about 20 kHz apart and the bursts seemed to come for
> most of the storm in either one receiver or the other, each section lasting
> about 5 to 10 minutes. Anyone know why this happens?****
>
> ****
>
> I’ve attached 3 images showing most of the event.****
>
> ****
>
> Regards,****
>
> ****
>
> Martin.****
>
> ** **
>
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