Study of the Rayleigh-Taylor instability in Tycho's supernova remnant

In the present paper we investigate the linear stage of instabilities which might take place at the shock front of young supernova remnants (hereafter SNR), deriving expressions for the characteristic wavelength and typical growth time scales. These theoretical predictions are compared with very hig...

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Autores principales:	Velázquez, P.F., Gómez, D.O., Dubner, G.M., Giménez De Castro, G., Costa, A.
Formato:	JOUR
Materias:	Hydrodynamics Instabilities ISM: individual: Tycho SNR ISM: supernova remnants shock waves
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00046361_v334_n3_p1060_Velazquez
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00046361_v334_n3_p1060_Velazquez
record_format	dspace
spelling	todo:paper_00046361_v334_n3_p1060_Velazquez2023-10-03T13:59:52Z Study of the Rayleigh-Taylor instability in Tycho's supernova remnant Velázquez, P.F. Gómez, D.O. Dubner, G.M. Giménez De Castro, G. Costa, A. Hydrodynamics Instabilities ISM: individual: Tycho SNR ISM: supernova remnants shock waves In the present paper we investigate the linear stage of instabilities which might take place at the shock front of young supernova remnants (hereafter SNR), deriving expressions for the characteristic wavelength and typical growth time scales. These theoretical predictions are compared with very high resolution observations of Tycho's SNR obtained with the Very Large Array at 1.4 GHz. The images obtained with an angular resolution of the order of 1 arcsec and with very good sensitivity, clearly reveal the presence of corrugated (wavelike) structures with remarkable spatial regularity, visible mainly along the northeastern part of the SNR shell. We argue that the Rayleigh-Taylor instability (hereafter R-T) is responsible for the observed structures. Using physical parameters of Tycho's remnant and its environment derived from different X-ray observational studies, we computed the expected wavelength and growth rate for the most unstable R-T mode including viscosity and magnetic effects. The wavelength we derive is fully compatible with the one measured directly on the image (λobs ∼ 0.9 pc). The growth rate derived for this mode indicates that the R-T instability is still undergoing its linear stage. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00046361_v334_n3_p1060_Velazquez
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Hydrodynamics Instabilities ISM: individual: Tycho SNR ISM: supernova remnants shock waves
spellingShingle	Hydrodynamics Instabilities ISM: individual: Tycho SNR ISM: supernova remnants shock waves Velázquez, P.F. Gómez, D.O. Dubner, G.M. Giménez De Castro, G. Costa, A. Study of the Rayleigh-Taylor instability in Tycho's supernova remnant
topic_facet	Hydrodynamics Instabilities ISM: individual: Tycho SNR ISM: supernova remnants shock waves
description	In the present paper we investigate the linear stage of instabilities which might take place at the shock front of young supernova remnants (hereafter SNR), deriving expressions for the characteristic wavelength and typical growth time scales. These theoretical predictions are compared with very high resolution observations of Tycho's SNR obtained with the Very Large Array at 1.4 GHz. The images obtained with an angular resolution of the order of 1 arcsec and with very good sensitivity, clearly reveal the presence of corrugated (wavelike) structures with remarkable spatial regularity, visible mainly along the northeastern part of the SNR shell. We argue that the Rayleigh-Taylor instability (hereafter R-T) is responsible for the observed structures. Using physical parameters of Tycho's remnant and its environment derived from different X-ray observational studies, we computed the expected wavelength and growth rate for the most unstable R-T mode including viscosity and magnetic effects. The wavelength we derive is fully compatible with the one measured directly on the image (λobs ∼ 0.9 pc). The growth rate derived for this mode indicates that the R-T instability is still undergoing its linear stage.
format	JOUR
author	Velázquez, P.F. Gómez, D.O. Dubner, G.M. Giménez De Castro, G. Costa, A.
author_facet	Velázquez, P.F. Gómez, D.O. Dubner, G.M. Giménez De Castro, G. Costa, A.
author_sort	Velázquez, P.F.
title	Study of the Rayleigh-Taylor instability in Tycho's supernova remnant
title_short	Study of the Rayleigh-Taylor instability in Tycho's supernova remnant
title_full	Study of the Rayleigh-Taylor instability in Tycho's supernova remnant
title_fullStr	Study of the Rayleigh-Taylor instability in Tycho's supernova remnant
title_full_unstemmed	Study of the Rayleigh-Taylor instability in Tycho's supernova remnant
title_sort	study of the rayleigh-taylor instability in tycho's supernova remnant
url	http://hdl.handle.net/20.500.12110/paper_00046361_v334_n3_p1060_Velazquez
work_keys_str_mv	AT velazquezpf studyoftherayleightaylorinstabilityintychossupernovaremnant AT gomezdo studyoftherayleightaylorinstabilityintychossupernovaremnant AT dubnergm studyoftherayleightaylorinstabilityintychossupernovaremnant AT gimenezdecastrog studyoftherayleightaylorinstabilityintychossupernovaremnant AT costaa studyoftherayleightaylorinstabilityintychossupernovaremnant
_version_	1807323157485322240

Study of the Rayleigh-Taylor instability in Tycho's supernova remnant

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