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A JWST Survey of the Supernova Remnant Cassiopeia A

Fuente: arXiv

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Autori principali:	Milisavljevic, Dan, Temim, Tea, De Looze, Ilse, Dickinson, Danielle, Laming, J. Martin, Fesen, Robert, Raymond, John C., Arendt, Richard G., Vink, Jacco, Posselt, Bettina, Pavlov, George G., Fox, Ori D., Pinarski, Ethan, Subrayan, Bhagya, Schmidt, Judy, Blair, William P., Rest, Armin, Patnaude, Daniel, Koo, Bon-Chul, Rho, Jeonghee, Orlando, Salvatore, Janka, Hans-Thomas, Andrews, Moira, Barlow, Michael J., Burrows, Adam, Chevalier, Roger, Clayton, Geoffrey, Fransson, Claes, Fryer, Christopher, Gomez, Haley L., Kirchschlager, Florian, Lee, Jae-Joon, Matsuura, Mikako, Niculescu-Duvaz, Maria, Pierel, Justin D. R., Plucinsky, Paul P., Priestley, Felix D., Ravi, Aravind P., Sartorio, Nina S., Schmidt, Franziska, Shahbandeh, Melissa, Slane, Patrick, Smith, Nathan, Weil, Kathryn, Wesson, Roger, Wheeler, J. Craig
Natura:	Preprint
Pubblicazione:	2024
Soggetti:	High Energy Astrophysical Phenomena
Accesso online:	Acceder al recurso
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author	Milisavljevic, Dan Temim, Tea De Looze, Ilse Dickinson, Danielle Laming, J. Martin Fesen, Robert Raymond, John C. Arendt, Richard G. Vink, Jacco Posselt, Bettina Pavlov, George G. Fox, Ori D. Pinarski, Ethan Subrayan, Bhagya Schmidt, Judy Blair, William P. Rest, Armin Patnaude, Daniel Koo, Bon-Chul Rho, Jeonghee Orlando, Salvatore Janka, Hans-Thomas Andrews, Moira Barlow, Michael J. Burrows, Adam Chevalier, Roger Clayton, Geoffrey Fransson, Claes Fryer, Christopher Gomez, Haley L. Kirchschlager, Florian Lee, Jae-Joon Matsuura, Mikako Niculescu-Duvaz, Maria Pierel, Justin D. R. Plucinsky, Paul P. Priestley, Felix D. Ravi, Aravind P. Sartorio, Nina S. Schmidt, Franziska Shahbandeh, Melissa Slane, Patrick Smith, Nathan Weil, Kathryn Wesson, Roger Wheeler, J. Craig
author_facet	Milisavljevic, Dan Temim, Tea De Looze, Ilse Dickinson, Danielle Laming, J. Martin Fesen, Robert Raymond, John C. Arendt, Richard G. Vink, Jacco Posselt, Bettina Pavlov, George G. Fox, Ori D. Pinarski, Ethan Subrayan, Bhagya Schmidt, Judy Blair, William P. Rest, Armin Patnaude, Daniel Koo, Bon-Chul Rho, Jeonghee Orlando, Salvatore Janka, Hans-Thomas Andrews, Moira Barlow, Michael J. Burrows, Adam Chevalier, Roger Clayton, Geoffrey Fransson, Claes Fryer, Christopher Gomez, Haley L. Kirchschlager, Florian Lee, Jae-Joon Matsuura, Mikako Niculescu-Duvaz, Maria Pierel, Justin D. R. Plucinsky, Paul P. Priestley, Felix D. Ravi, Aravind P. Sartorio, Nina S. Schmidt, Franziska Shahbandeh, Melissa Slane, Patrick Smith, Nathan Weil, Kathryn Wesson, Roger Wheeler, J. Craig
contents	We present initial results from a JWST survey of the youngest Galactic core-collapse supernova remnant Cassiopeia A (Cas A), made up of NIRCam and MIRI imaging mosaics that map emission from the main shell, interior, and surrounding circumstellar/interstellar material (CSM/ISM). We also present four exploratory positions of MIRI/MRS IFU spectroscopy that sample ejecta, CSM, and associated dust from representative shocked and unshocked regions. Surprising discoveries include: 1) a web-like network of unshocked ejecta filaments resolved to 0.01 pc scales exhibiting an overall morphology consistent with turbulent mixing of cool, low-entropy matter from the progenitor's oxygen layer with hot, high-entropy matter heated by neutrino interactions and radioactivity, 2) a thick sheet of dust-dominated emission from shocked CSM seen in projection toward the remnant's interior pockmarked with small (approximately one arcsecond) round holes formed by knots of high-velocity ejecta that have pierced through the CSM and driven expanding tangential shocks, 3) dozens of light echoes with angular sizes between 0.1 arcsecond to 1 arcminute reflecting previously unseen fine-scale structure in the ISM. NIRCam observations place new upper limits on infrared emission from the neutron star in Cas A's center and tightly constrain scenarios involving a possible fallback disk. These JWST survey data and initial findings help address unresolved questions about massive star explosions that have broad implications for the formation and evolution of stellar populations, the metal and dust enrichment of galaxies, and the origin of compact remnant objects.
format	Preprint
id	arxiv_https___arxiv_org_abs_2401_02477
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	A JWST Survey of the Supernova Remnant Cassiopeia A Milisavljevic, Dan Temim, Tea De Looze, Ilse Dickinson, Danielle Laming, J. Martin Fesen, Robert Raymond, John C. Arendt, Richard G. Vink, Jacco Posselt, Bettina Pavlov, George G. Fox, Ori D. Pinarski, Ethan Subrayan, Bhagya Schmidt, Judy Blair, William P. Rest, Armin Patnaude, Daniel Koo, Bon-Chul Rho, Jeonghee Orlando, Salvatore Janka, Hans-Thomas Andrews, Moira Barlow, Michael J. Burrows, Adam Chevalier, Roger Clayton, Geoffrey Fransson, Claes Fryer, Christopher Gomez, Haley L. Kirchschlager, Florian Lee, Jae-Joon Matsuura, Mikako Niculescu-Duvaz, Maria Pierel, Justin D. R. Plucinsky, Paul P. Priestley, Felix D. Ravi, Aravind P. Sartorio, Nina S. Schmidt, Franziska Shahbandeh, Melissa Slane, Patrick Smith, Nathan Weil, Kathryn Wesson, Roger Wheeler, J. Craig High Energy Astrophysical Phenomena We present initial results from a JWST survey of the youngest Galactic core-collapse supernova remnant Cassiopeia A (Cas A), made up of NIRCam and MIRI imaging mosaics that map emission from the main shell, interior, and surrounding circumstellar/interstellar material (CSM/ISM). We also present four exploratory positions of MIRI/MRS IFU spectroscopy that sample ejecta, CSM, and associated dust from representative shocked and unshocked regions. Surprising discoveries include: 1) a web-like network of unshocked ejecta filaments resolved to 0.01 pc scales exhibiting an overall morphology consistent with turbulent mixing of cool, low-entropy matter from the progenitor's oxygen layer with hot, high-entropy matter heated by neutrino interactions and radioactivity, 2) a thick sheet of dust-dominated emission from shocked CSM seen in projection toward the remnant's interior pockmarked with small (approximately one arcsecond) round holes formed by knots of high-velocity ejecta that have pierced through the CSM and driven expanding tangential shocks, 3) dozens of light echoes with angular sizes between 0.1 arcsecond to 1 arcminute reflecting previously unseen fine-scale structure in the ISM. NIRCam observations place new upper limits on infrared emission from the neutron star in Cas A's center and tightly constrain scenarios involving a possible fallback disk. These JWST survey data and initial findings help address unresolved questions about massive star explosions that have broad implications for the formation and evolution of stellar populations, the metal and dust enrichment of galaxies, and the origin of compact remnant objects.
title	A JWST Survey of the Supernova Remnant Cassiopeia A
topic	High Energy Astrophysical Phenomena
url	https://arxiv.org/abs/2401.02477