CONICET | Buscador de Institutos y Recursos Humanos

We present a detailed analysis of the morphological properties of theCrab Nebula across the electromagnetic spectrum based on new andprevious high-quality data from radio to X-rays. In the radio range weobtained an image of the entire nebula at 3 GHz with subarcsecondangular resolution using the VLA (NRAO) and an image at 100 GHz of thecentral region using the ALMA array. Simultaneously with the VLAobservations we performed HST WFPC3 near infrared and Chandra X-rayobservations of the central region of the nebula. In addition weproduced a new UV image of the Crab nebula at 291 nm by co-adding 75individual exposures of the Optical-UV Monitor on board XMM-Newton. Thehigh-angular resolution and high-dynamic range radio image at 3 GHzallowed us to improve the detection and characterization of peculiarmorphological features including arches with foot brightening andintercrossed loop-like structures, likely originating in plasma confinedto magnetic field lines. Based on the new radio image, we carried out adetailed multiwavelength correlation. In the central area, thecomparison of the almost simultaneous images confirms that the wisps inthe three spectral ranges do not generally coincide in location, theradio emission being the most discordant, which is suggestive of theexistence of two different synchrotron components. The X-ray pulsar jetdoes not have a radio counterpart. Instead, another jet-like feature isseen in radio, though with different curvature and starting point.