(top) Frames from the NenuFAR TV around the event at 54 MHz.(bottom) dynamic spectrum showing two kind of solar burst seen in radio (the red line corresponds to the maximum of emission seen on the NenuFAR-TV). The frequency driting structure are characteristif of this kind of emission.(insert) Composite image from LASCO-C2 and SDO-AIA (193Å) during the event. The solar atmosphere regularly produces huge explosions in its atmosphere known as coronal mass ejections (CMEs). CMEs carryRead More
Since 1/12/2020, the NenuFAR correlator is fully operational and thus the NenuFAR imaging mode is available. The correlator, nicknamed NICKEL (NenuFAR Imaging Compute Kluster Elaborated from LOFAR’s), is a clone of LOFAR’s new COBALT-2 correlator (Broekema 2018) that was scaled and adapted to NenuFAR’s antenna field. Support was obtained (and much appreciated) from ASTRON to help defining, installing and debugging NICKEL. The correlator will process the signals from 102 Mini-Arrays (96 MA within the coreRead More
NenuFAR, an official pathfinder of SKA, is a new low-frequency radio array of 2000 antennas (crossed dipoles), in end of construction and start of operation at the Nançay Radio Observatory, France. It allows to observe according to several modes (beams, imaging, waveform…) associated to a large variety of setups. The instrument flexibility, added to its international use (12 key scientific programs active in the “Early Science” phase), motivated the development of a graphical control interfaceRead More