Astronomy: Infrared echoes near the supernova remnant Cassiopeia A

Oliver Krause; George H. Rieke; Stephan M. Birkmann; Emeric Le Floc'h; Karl D. Gordon; Eiichi Egami; John Bieging; John P. Hughes; Erick T. Young; Joannah L. Hinz; Sascha P. Quanz; Dean C. Hines

doi:10.1126/science.1112035

Astronomy: Infrared echoes near the supernova remnant Cassiopeia A

Oliver Krause, George H. Rieke, Stephan M. Birkmann, Emeric Le Floc'h, Karl D. Gordon, Eiichi Egami, John Bieging, John P. Hughes, Erick T. Young, Joannah L. Hinz, Sascha P. Quanz, Dean C. Hines

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Abstract

Two images of Cassiopeia A obtained at 24 micrometers with the Spitzer Space Telescope over a 1-year time interval show moving structures outside the shell of the supernova remnant to a distance of more than 20 arc minutes. Individual features exhibit apparent motions of 10 to 20 arc seconds per year, independently confirmed by near-infrared observations. The observed tangential velocities are at roughly the speed of light. It is likely that the moving structures are infrared echoes, in which interstellar dust is heated by the explosion and by flares from the compact object near the center of the remnant.

Original language	English (US)
Pages (from-to)	1604-1606
Number of pages	3
Journal	Science
Volume	308
Issue number	5728
DOIs	https://doi.org/10.1126/science.1112035
State	Published - Jun 10 2005

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title = "Astronomy: Infrared echoes near the supernova remnant Cassiopeia A",

abstract = "Two images of Cassiopeia A obtained at 24 micrometers with the Spitzer Space Telescope over a 1-year time interval show moving structures outside the shell of the supernova remnant to a distance of more than 20 arc minutes. Individual features exhibit apparent motions of 10 to 20 arc seconds per year, independently confirmed by near-infrared observations. The observed tangential velocities are at roughly the speed of light. It is likely that the moving structures are infrared echoes, in which interstellar dust is heated by the explosion and by flares from the compact object near the center of the remnant.",

author = "Oliver Krause and Rieke, {George H.} and Birkmann, {Stephan M.} and {Le Floc'h}, Emeric and Gordon, {Karl D.} and Eiichi Egami and John Bieging and Hughes, {John P.} and Young, {Erick T.} and Hinz, {Joannah L.} and Quanz, {Sascha P.} and Hines, {Dean C.}",

year = "2005",

month = jun,

day = "10",

doi = "10.1126/science.1112035",

language = "English (US)",

volume = "308",

pages = "1604--1606",

journal = "Science",

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TY - JOUR

T1 - Astronomy

T2 - Infrared echoes near the supernova remnant Cassiopeia A

AU - Krause, Oliver

AU - Rieke, George H.

AU - Birkmann, Stephan M.

AU - Le Floc'h, Emeric

AU - Gordon, Karl D.

AU - Egami, Eiichi

AU - Bieging, John

AU - Hughes, John P.

AU - Young, Erick T.

AU - Hinz, Joannah L.

AU - Quanz, Sascha P.

AU - Hines, Dean C.

PY - 2005/6/10

Y1 - 2005/6/10

N2 - Two images of Cassiopeia A obtained at 24 micrometers with the Spitzer Space Telescope over a 1-year time interval show moving structures outside the shell of the supernova remnant to a distance of more than 20 arc minutes. Individual features exhibit apparent motions of 10 to 20 arc seconds per year, independently confirmed by near-infrared observations. The observed tangential velocities are at roughly the speed of light. It is likely that the moving structures are infrared echoes, in which interstellar dust is heated by the explosion and by flares from the compact object near the center of the remnant.

AB - Two images of Cassiopeia A obtained at 24 micrometers with the Spitzer Space Telescope over a 1-year time interval show moving structures outside the shell of the supernova remnant to a distance of more than 20 arc minutes. Individual features exhibit apparent motions of 10 to 20 arc seconds per year, independently confirmed by near-infrared observations. The observed tangential velocities are at roughly the speed of light. It is likely that the moving structures are infrared echoes, in which interstellar dust is heated by the explosion and by flares from the compact object near the center of the remnant.

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Astronomy: Infrared echoes near the supernova remnant Cassiopeia A

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