Session 4 Forum34. synchronized X-UV-visible-radio observationsAug. 30th 2007 08:27 am, by: Frédéric Clette For adressing issues of solar wind source and background coronal heating, there is still a lack of synchronized multi-spectral observations.
In particular, we do’nt have proper data sets relating the dynamics of the photosphere/chromosphere with the transition region/corona. This is mainly due to the fact that visible-light observations are almost exclusively done from the ground while X-UV is observed from spacecrafts, with completely different constraints and operation modes.
This seems to have blocked any breakthrough in the global understanding of the role and probable common physical base of a wide range of small-scale transients filling the whole solar atmosphere, in particular the chromosphere (cf. Hudson’s remark)
There are two possible approaches:
The big technical challenge behind this multi-spectral work will be the accurate temporal and spatial co-alignement of the data sets. It will certainly rely on the use of imaging instruments providing the space-time tie points (connectivity is the key!). A good starting point for a reflexion would thus be to identify the best restricted set of wavelengths that would allow the most reliable co-alignment across all layers of the solar atmosphere, in particular at timescales below one minute. 33. What is the role of the chromosphere in CME development?Aug. 29th 2007 07:57 am, by: Hugh Hudson Heating the chromosphere is notoriously a more important problem than heating the corona. Does this insight have any analog in the CME process? In other words, is chromospheric energy or mass important for CMEs? How can we resolve these questions with improved observations and theories? 32. Solar physics is dying, long live heliophysics...Aug. 29th 2007 07:05 am, by: Thierry Dudok de Wit The benefit of space weather is that it is learning us to consider the solar system as a whole and pay more attention to the connections between different layers. Another point: Many new discoveries are limited or are driven by new technologies or new methods, and this could bring some fresh ideas. What about 2D spectro-imaging, total irradiance imaging of magnetic field measurements in the corona (with FASR) ? This is not just a matter of increasing resolution or cadence. 31. Is solar physics dead?Aug. 27th 2007 08:15 am, by: David Berghmans Is there any hope for solar physics beyond space weather? It seems that space agencies will in the future only fund missions that thread ’heliosphysics’ as a wide system , predictive science. Pure solar physics and ground observatories do not seem to have any future. Resistance is futile, you will be assimilated. 30. Solar Imaging: Data Rich but Still Knowledge PoorJul. 23rd 2007 04:45 pm, by: Dr Rami Qahwaji Currently, high-resolution multi-wavelength solar images and data are becoming widely available. Data volumes will shortly increase from 1000 to 10,000 times because of the recent space missions (Hinode and STEREO) and the near mission (EDO). Extracting useful knowledge from this vast amount of data and trying to establish useful connections between data relating to different time periods is very challenging. Also, there is a lack of clear definitions for solar features and inconsistencies may exist in the reported observations for solar features which increase the difficulty of designing automated detection and processing systems. We believe that it is important to overcome these challenges and to consider the future of solar research by encouraging multidisciplinary approaches that integrate physics based modelling with image processing, machine learning, automated systems design, computer vision, etc. 29. Vocation of this forumJul. 11th 2007 06:48 pm, by: The soho20 organizers Submit here ideas that you would like to hear discussed during the session 4 Panel event on Thursday pm. |
including visible-light instruments on board space missions