1. Αποθετήριο Παραδοτέων Υποτρόφων Δράσεων ΕΣΠΑ Τριτοβάθμιας Εκπαίδευσης 2017-2023
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3. Ερευνητικές ομάδες

Τύπος:	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	'Ears' formation in supernova remnants: overhearing an interaction history with bipolar circumstellar structures
Συγγραφέας:	[EL] Χιωτέλλης, Αλέξανδρος[EN] Chiotellis, Alexandros [EL] Μπούμης, Παναγιώτης[EN] Boumis, Panayotis [EL] Σπετσιέρη, Ζωή - Τζόγια[EN] Spetsieri, Zoi - Tzogia
Ημερομηνία:	28/01/2021
Περίληψη:	A characteristic feature that is frequently found in nearby supernova remnants (SNRs) is the existence of two antisymmetric, local protrusions that are projected as two ‘ears’ in the morphology of the nebula. In this paper, we present a novel scenario for the ‘ear’ formation process, according to which the two lobes are formed through the interaction of the SNR with a bipolar circumstellar medium (CSM) that was surrounding the explosion’s centre. We conduct two-dimensional hydrodynamic simulations and we show that the SNR shock breakout from the bipolar CSM triggers the inflation of two opposite protrusions at the equator of the remnant, which retain their size and shape from several hundreds up to a few thousand years of the SNR evolution. We run a set of models by varying the supernova (SN) and CSM properties and we demonstrate that the extracted results reveal good agreement with the observables, regarding the sizes, lifespan, morphology and kinematics of the ‘ears’. We discuss the plausibility of our model in nature and we suggest that the most likely progenitors of the ‘ear-carrying’ SNRs are the luminous blue variables or the red/yellow supergiants for the SNRs resulting from core collapse SN events, and the symbiotic binaries or the planetary nebulae for the SNRs formed by Type Ia SNe. Finally, we compare our model with other ‘ear’ formation models found in the literature and we show that there are distinctive differences among them, concerning the orientation of the ‘ears’ and the phase in which the ‘ear’ formation process occurs.
Γλώσσα:	Αγγλικά
DOI:	10.1093/mnras/staa3573
EISSN:	1365-2966
Θεματική κατηγορία:	[EL] Αστρονομία και Αστροφυσική[EN] Astronomy and Astrophysics
Λέξεις-κλειδιά:	hydrodynamics; ISM: individual objects: Kepler’s SNR; ISM: individual objects: G1.9+0.3; ISM: individual objects: G309.2–06; ISM: jets and outflows; ISM: supernova remnants
Κάτοχος πνευματικών δικαιωμάτων:	© 2021 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society
Ηλεκτρονική διεύθυνση του τεκμηρίου στον εκδότη:	https://academic.oup.com/mnras/article/502/1/176/6122896
Ηλεκτρονική διεύθυνση περιοδικού:	https://academic.oup.com/mnras
Τίτλος πηγής δημοσίευσης:	Monthly Notices of the Royal Astronomical Society
Τεύχος:	1
Τόμος:	502
Σελίδες τεκμηρίου (στην πηγή):	176–187
Σημειώσεις:	This research is co-financed by Greece and the European Union (European Social Fund-ESF) through the Operational Programme ‘Human Resources Development, Education and Lifelong Learning 2014-2020’ in the context of the project ‘On the interaction of Type Ia Supernovae with Planetary Nebulae’ (MIS 5049922). AC is grateful to Noam Soker for many helpful discussions on the topic of jets interaction with supernova remnants. In addition, we thank Rony Keppens for providing us with the AMRVAC code. AC acknowledge the support of this work by the project ‘PROTEAS II’ (MIS 5002515),which is implemented under the Action ‘Reinforcement of the Research and Innovation Infrastructure’, funded by the Operational Programme ‘Competitiveness, Entrepreneur-ship and Innovation‘ (NSRF 2014- 2020) and co-financed by Greece and the European Union (European Regional Development Fund). The Aristarchos telescope is operated at Helmos Observatory by the IAASARS of the National Observatory of Athens.
Εμφανίζεται στις συλλογές:	Ερευνητικές ομάδες