Daily Image
13-01-2025
Rapthor image of the 3C 61.1 field
| Submitter: | André Offringa |
| Description: | This is a LOFAR observation of the 3C 61.1 field, processed with the Rapthor pipeline to create a 27K x 33K image with 5" resolution. The Rapthor pipeline is a direction-dependent calibration and imaging package that can produce science-quality images from LOFAR data. On a single machine, it takes now 6 days to run Rapthor. This is a challenging field to image, because of the very bright, resolved source in the centre (3C 61.1). It is for the first time that a pipeline can make such a high fidelity LOFAR image of this source and the rest of the field. Accurate modeling of 3C 61.1 is important, because this source is inside one of the fields being used by the LOFAR Epoch of Reionization team. For that science case, foregrounds like 3C 61.1 are overshining the signal of interest, and need to be removed from the data. 3C 61.1 was one of the first sources being looked at with LOFAR: already in 2009, it was imaged by R. van Weeren https://www.astron.nl/dailyimage/main.php?date=20100208). |
| Copyright: | CC |
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