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projects:jupiter:intercont-2023-12-27 [2023/12/28 12:29] wucknitz |
projects:jupiter:intercont-2023-12-27 [2024/03/05 13:57] (current) wucknitz |
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| ====== Observations 2023-12-27 20:30-22:30 UTC ====== | ====== Observations 2023-12-27 20:30-22:30 UTC ====== | ||
| - | This time was chosen because of a good chance to see DAM signals from both hemispheres of Jupiter, so that that could be calibration relative to each other. We observed with NenuFAR, the LWA (LWA1, LWA-SV), KAIRA, GLOW, and other international LOFAR stations (FIXME). It is very sad that our Ukrainian friends cannot participate with UTR2 anymore. | + | This time was chosen because of a good chance to see DAM signals from both hemispheres of Jupiter, so that they can be calibrated relative to each other. We observed with NenuFAR, the LWA (LWA1, LWA-SV), KAIRA, and a number of LOFAR stations (all six of GLOW, PL612, IE613, LV614). It is very sad that our Ukrainian friends cannot participate with UTR2 anymore. |
| All LOFAR(-like) stations observed in RCU mode 3 (band 10_90) with 8-bit recording of 244 subbands (40-283, 8-55 MHz). Beamforming was done in direction ''0.5826639,0.2118205,J2000'' or ''0,0,JUPITER''. | All LOFAR(-like) stations observed in RCU mode 3 (band 10_90) with 8-bit recording of 244 subbands (40-283, 8-55 MHz). Beamforming was done in direction ''0.5826639,0.2118205,J2000'' or ''0,0,JUPITER''. | ||
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| ===== Individual stations ===== | ===== Individual stations ===== | ||
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| + | Diagnostic plots for all participating LOFAR stations (and eventually NenuFAR, FIXME) can be found {{:projects:jupiter:jupiter_2023_12_27_stat.pdf|here.}} They all show clear signatures from Jupiter in the dynamic spectra even at this very low resolution. | ||
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| ==== KAIRA ==== | ==== KAIRA ==== | ||
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| These plots show the strong (Io-B?) arc, but unfortunately not the expected (Io-D) counterpart from the southern hemisphere that we had hoped for. The exact nature of these signals needs to be investigated. In any case the signal is clearly strong enough for a VLBI analysis. | These plots show the strong (Io-B?) arc, but unfortunately not the expected (Io-D) counterpart from the southern hemisphere that we had hoped for. The exact nature of these signals needs to be investigated. In any case the signal is clearly strong enough for a VLBI analysis. | ||
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| + | Here are plots from data taken before our observation (kindly provided by Laurent Lamy):\\ | ||
| + | {{:projects:jupiter:20231227_140000_20231227_202900_jupiter_tracking.pdf}}\\ | ||
| + | He writes: "(1) It confirmes that the prominent vertex-early arcs are RH polarized (white on the bottom panel) and therefore consistent with Io-B emission (2) at the lowest frequencies, LH emission (black on the bottom panel) is seen continuously after 16:30, including what might be a signature of Io-D emission after 18:00". | ||
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| + | This means we have a good chance to see emission from both hemispheres at least at the beginning of our observation. | ||
| **People involved: Laurent Lamy, Jean-Mathias Griessmeier, Philippe Zarka, Louis Bondonneau** | **People involved: Laurent Lamy, Jean-Mathias Griessmeier, Philippe Zarka, Louis Bondonneau** | ||
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| - | ==== other stations ==== | + | ==== PL610 ==== |
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| + | **People involved: Mariusz Pożoga** | ||
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| + | ==== PL612 ==== | ||
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| + | **People involved: Tomasz Sidorowicz** | ||
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| + | ==== IE613 ==== | ||
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| + | **People involved: Joe McCauley, Corentin Louis** | ||
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| + | ==== LV614 ==== | ||
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| + | LV614 started a bit late, but also continued for a bit longer. | ||
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| + | **People involved: Janis Steinbergs** | ||
| - | FIXME | ||
