{"id":78,"date":"2013-06-19T09:12:21","date_gmt":"2013-06-19T09:12:21","guid":{"rendered":"http:\/\/phsites.technion.ac.il\/soker\/?page_id=78"},"modified":"2022-01-12T15:00:59","modified_gmt":"2022-01-12T13:00:59","slug":"research-topics","status":"publish","type":"page","link":"https:\/\/phsites.technion.ac.il\/soker\/research-topics\/","title":{"rendered":"Research"},"content":{"rendered":"\n

See also Publications<\/a> and News<\/a> <\/p>\n\n\n\n

Supernovae<\/h2>\n\n\n\n
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With collaborators we have been developing the jet feedback mechanism to explain the explosion of massive stars.  The morphology of some supernovae show  indeed signatures of jets, sometimes similar to planetary nebulae.  We take such morphological features to indicate that massive stars are exploded by jets. <\/p>\n

On the left  isan image from the paper<\/a> by Ealeal Bear<\/strong>, Aldana Grichener<\/strong> & Noam Soker.  This figure compares similar morphological features between the supernovae remnant RCW 103 and three  planetary nebulae, A 63 (image taken from Mitchell et al. 2007), NGC 40 (both images are from Meaburn et al. 1996), and NGC 3918 (both images are from Corradi et al. 1999; images are rotated so that the jets are vertical). The image of RCW 103 is a composite X-ray image
in three energy bands (low=red, medium=green, highest=blue) combined with an optical image from the Digitized Sky Survey (image taken from the Chandra website based on Reaet al. 2016). The proposed original directions of the, already dead, jets in the super ova remnant RCW 103 are marked by yellow thick arrows.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n

ILOTs: Intermediate-Luminosity Optical Transients<\/h2>\n\n\n\n
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With Amit Kashi<\/strong> we classify objects with luminosity between novae and supernovae. We argue that most of them are powered by gravitational energy of stellar merger or accretion in a binary system. For details see here<\/a>. <\/p>\n<\/div><\/div>\n\n\n\n

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Morphology<\/h2>\n\n\n\n

One of my research topics is to explain the similar morphologies of some of the objects, as seen in the figures below (the colors are not real). The common shaping mechanism is the launching of jets by a compact object at the center. Images are mostly from the Hubble Space Telescope<\/a>.<\/p>\n\n\n\n

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