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VERITAS Studies of the Supernova Remnants Cas A and IC 443

VERITAS observed the supernova remnants Cassiopeia A (Cas A) and IC 443 during 2007, resulting in strong TeV detections of both sources. Cas A is a young remnant, and bright in both the radio and nonthermal X-rays, both tracers of…

Astrophysics · Physics 2019-08-13 Thomas Brian Humensky

Hypercritical accretion phase and neutrino expectation in the evolution of Cassiopeia A

Cassiopeia A the youngest supernova remnant known in the Milky Way is one of the brightest radio sources in the sky and a unique laboratory for supernova physics. Although its compact remnant was discovered in 1999 by the Chandra X-Ray…

High Energy Astrophysical Phenomena · Physics 2015-08-06 Nissim Fraija , C. Giovanny Bernal

From total destruction to complete survival: Dust processing at different evolutionary stages in the supernova remnant Cassiopeia A

The expanding ejecta of supernova remnants (SNRs) are believed to form dust in dense clumps of gas. Before the dust can be expelled into the interstellar medium and contribute to the interstellar dust budget, it has to survive the reverse…

Astrophysics of Galaxies · Physics 2024-02-02 Florian Kirchschlager , Nina Sartorio , Ilse De Looze , M. J. Barlow , Franziska Schmidt , Felix Priestley

From the supernova to the supernova remnant: the three-dimensional imprint of a thermonuclear explosion

Recent progress in the three-dimensional modeling of supernovae (SN) has shown the importance of asymmetries for the explosion. This calls for a reconsideration of the modeling of the subsequent phase, the supernova remnant (SNR), which has…

High Energy Astrophysical Phenomena · Physics 2019-06-12 Gilles Ferrand , Donald C. Warren , Masaomi Ono , Shigehiro Nagataki , Friedrich K. Roepke , Ivo R. Seitenzahl

Augmented reality system for visualising magnetic field topology and charged-particle trajectories in magnetic fusion plasmas

A cost-effective augmented reality (AR) system is presented for visualising three-dimensional magnetic field structures and charged-particle trajectories in magnetically confined fusion plasmas. The system presented in this study integrates…

Plasma Physics · Physics 2026-04-29 Akinobu Matsuyama

Supernova Remnants in High Definition

Supernova remnants (SNRs) offer the means to study SN explosions, dynamics, and shocks at sub-parsec scales. X-ray observations probe the hot metals synthesized in the explosion and the TeV electrons accelerated by the shocks, and thus they…

High Energy Astrophysical Phenomena · Physics 2019-03-26 Laura A. Lopez , Brian J. Williams , Samar Safi-Harb , Sangwook Park , Paul P. Plucinsky , David Pooley , Tea Temim , Katie Auchettl , Aya Bamba , Carles Badenes , Daniel Castro , Kristen Garofali , Denis Leahy , Patrick Slane , Jacco Vink , Benjamin F. Williams , J. Craig Wheeler

A JWST Survey of the Supernova Remnant Cassiopeia A

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…

High Energy Astrophysical Phenomena · Physics 2024-06-12 Dan Milisavljevic , Tea Temim , Ilse De Looze , Danielle Dickinson , J. Martin Laming , Robert Fesen , John C. Raymond , Richard G. Arendt , Jacco Vink , Bettina Posselt , George G. Pavlov , Ori D. Fox , Ethan Pinarski , Bhagya Subrayan , Judy Schmidt , William P. Blair , Armin Rest , Daniel Patnaude , Bon-Chul Koo , Jeonghee Rho , Salvatore Orlando , Hans-Thomas Janka , Moira Andrews , Michael J. Barlow , Adam Burrows , Roger Chevalier , Geoffrey Clayton , Claes Fransson , Christopher Fryer , Haley L. Gomez , Florian Kirchschlager , Jae-Joon Lee , Mikako Matsuura , Maria Niculescu-Duvaz , Justin D. R. Pierel , Paul P. Plucinsky , Felix D. Priestley , Aravind P. Ravi , Nina S. Sartorio , Franziska Schmidt , Melissa Shahbandeh , Patrick Slane , Nathan Smith , Kathryn Weil , Roger Wesson , J. Craig Wheeler

High-Resolution X-ray Imaging Studies of Neutron Stars, Pulsar Wind Nebulae and Supernova Remnants

Supernova remnants serve as nearby laboratories relevant to many areas in Astrophysics, from stellar and galaxy evolution to extreme astrophysics and the formation of the heavy elements in the Universe. The Chandra X-ray mission has enabled…

High Energy Astrophysical Phenomena · Physics 2019-04-16 Samar Safi-Harb , Elena Amato , Eric V. Gotthelf , Satoru Katsuda , Manami Sasaki , Yasunobu Uchiyama , Naomi Tsuji , Benson Guest

Spatio-temporal characterization of Cassiopeia A

Analyzing the X-ray data of supernova remnants (SNRs) are among the most challenging task in the current X-ray astronomy because SNRs are both spatially extended and variable over time. We developed the strategy to track the time-series…

High Energy Astrophysical Phenomena · Physics 2023-04-12 Yuto Ichinohe , Toshiki Sato

XRISM Observations of Cassiopeia A: Overview, Atomic Data, and Spectral Models

Cassiopeia A (Cas A) is the youngest known core-collapse supernova remnant (SNR) in the Galaxy and is perhaps the best-studied SNR in X-rays. Cas A has a line-rich spectrum dominated by thermal emission and given its high flux, it is an…

High Energy Astrophysical Phenomena · Physics 2025-08-26 Paul Plucinsky , Manan Agarwal , Liyi Gu , Adam Foster , Toshiki Sato , Aya Bamba , Jacco Vink , Masahiro Ichihashi , Kai Matsunaga , Koji Mori , Hiroshi Nakajima , Frederick Porter , Haruto Sonoda , Shunsuke Suzuki , Dai Tateishi , Yukikatsu Terada , Hiroyuki Uchida , Hiroya Yamaguchi

Unveiling the Physics of Core-Collapse Supernovae with the Line Emission Mapper: Observing Cassiopeia A

(Abridged) Core-collapse supernova remnants (SNRs) display complex morphologies and asymmetries, reflecting anisotropies from the explosion and early interactions with the circumstellar medium (CSM). Spectral analysis of these remnants can…

High Energy Astrophysical Phenomena · Physics 2024-08-23 S. Orlando , M. Miceli , D. J. Patnaude , P. P. Plucinsky , S. -H. Lee , C. Badenes , H. -T. Janka , A. Wongwathanarat , J. Raymond , M. Sasaki , E. Churazov , I. Khabibullin , F. Bocchino , D. Castro , M. Millard

Updated Proper Motion of the Neutron Star in the Supernova Remnant Cassiopeia A

In this paper, we present updated estimates of the velocity of the neutron star (NS) in the supernova remnant (SNR) Cassiopeia A using over two decades of Chandra observations. We use two methods: 1.) recording NS positions from dozens of…

High Energy Astrophysical Phenomena · Physics 2025-01-23 Tyler Holland-Ashford , Patrick Slane , Xi Long

Richardson-Lucy deconvolution with a spatially Variant point-spread function of Chandra: Supernova Remnant Cassiopeia A as an Example

Richardson-Lucy (RL) deconvolution is one of the classical methods widely used in X-ray astronomy and other areas. Amid recent progress in image processing, RL deconvolution still leaves much room for improvement under a realistic…

High Energy Astrophysical Phenomena · Physics 2023-07-06 Yusuke Sakai , Shinya Yamada , Toshiki Sato , Ryota Hayakawa , Ryota Higurashi , Nao Kominato

The fully developed remnant of a neutrino-driven supernova: Evolution of ejecta structure and asymmetries in SNR Cassiopeia A

Abridged. We aim at exploring to which extent the remnant keeps memory of the asymmetries that develop stochastically in the neutrino-heating layer due to hydrodynamic instabilities (e.g., convective overturn and the standing accretion…

High Energy Astrophysical Phenomena · Physics 2021-01-20 S. Orlando , A. Wongwathanarat , H. -T. Janka , M. Miceli , M. Ono , S. Nagataki , F. Bocchino , G. Peres

Kinematics of Supernova Remnants: Status of X-Ray Observations

A supernova (SN) explosion drives stellar debris into the circumstellar material (CSM) filling a region on a scale of parsecs with X-ray emitting plasma. The velocities involved in supernova remnants (SNRs), thousands of km/s, can be…

Astrophysics of Galaxies · Physics 2015-05-20 Daniel Dewey

Supernova remnants of red supergiants: from barrels to Cygnus loops

Core-collapse supernova remnants are the nebular leftover of defunct massive stars which have died during a supernova explosion, mostly while undergoing the red supergiant phase of their evolution. The morphology and emission properties of…

High Energy Astrophysical Phenomena · Physics 2024-04-12 D M A Meyer , P F Velazquez , M Pohl , K Egberts , M Petrov , M A Villagran , D F Torres , R Batzofin

On the spherical-axial transition in supernova remnants

A new law of motion for supernova remnant (SNR) which introduces the quantity of swept matter in the thin layer approximation is introduced. This new law of motion is tested on 10 years observations of SN1993J. The introduction of an…

Astrophysics of Galaxies · Physics 2015-05-30 L. Zaninetti

3D Simulations of the Thermal X-ray Emission from Young Supernova Remnants Including Efficient Particle Acceleration

Supernova remnants (SNRs) are believed to be the major contributors to Galactic cosmic rays. The detection of non-thermal emission from SNRs demonstrates the presence of energetic particles, but direct signatures of protons and other ions…

High Energy Astrophysical Phenomena · Physics 2015-06-11 Gilles Ferrand , Anne Decourchelle , Samar Safi-Harb

Supernova remnants: the X-ray perspective

Supernova remnants are beautiful astronomical objects that are also of high scientific interest, because they provide insights into supernova explosion mechanisms, and because they are the likely sources of Galactic cosmic rays. X-ray…

High Energy Astrophysical Phenomena · Physics 2012-01-05 Jacco Vink

Does or did the supernova remnant Cassiopeia A operate as a PeVatron?

For decades, supernova remnants (SNRs) have been considered the prime sources of Galactic Cosmic rays (CRs). But whether SNRs can accelerate CR protons to PeV energies and thus dominate CR flux up to the knee is currently under intensive…

High Energy Astrophysical Phenomena · Physics 2023-10-27 Zhen Cao , F. Aharonian , Q. An , Axikegu , Y. X. Bai , Y. W. Bao , D. Bastieri , X. J. Bi , Y. J. Bi , J. T. Cai , Q. Cao , W. Y. Cao , Zhe Cao , J. Chang , J. F. Chang , A. M. Chen , E. S. Chen , Liang Chen , Lin Chen , Long Chen , M. J. Chen , M. L. Chen , Q. H. Chen , S. H. Chen , S. Z. Chen , T. L. Chen , Y. Chen , N. Cheng , Y. D. Cheng , M. Y. Cui , S. W. Cui , X. H. Cui , Y. D. Cui , B. Z. Dai , H. L. Dai , Z. G. Dai , Danzengluobu , D. della Volpe , X. Q. Dong , K. K. Duan , J. H. Fan , Y. Z. Fan , J. Fang , K. Fang , C. F. Feng , L. Feng , S. H. Feng , X. T. Feng , Y. L. Feng , S. Gabici , B. Gao , C. D. Gao , L. Q. Gao , Q. Gao , W. Gao , W. K. Gao , M. M. Ge , L. S. Geng , G. Giacinti , G. H. Gong , Q. B. Gou , M. H. Gu , F. L. Guo , X. L. Guo , Y. Q. Guo , Y. Y. Guo , Y. A. Han , H. H. He , H. N. He , J. Y. He , X. B. He , Y. He , M. Heller , Y. K. Hor , B. W. Hou , C. Hou , X. Hou , H. B. Hu , Q. Hu , S. C. Hu , D. H. Huang , T. Q. Huang , W. J. Huang , X. T. Huang , X. Y. Huang , Y. Huang , Z. C. Huang , X. L. Ji , H. Y. Jia , K. Jia , K. Jiang , X. W. Jiang , Z. J. Jiang , M. Jin , M. M. Kang , T. Ke , D. Kuleshov , K. Kurinov , B. B. Li , Cheng Li , Cong Li , D. Li , F. Li , H. B. Li , H. C. Li , H. Y. Li , J. Li , Jian Li , Jie Li , K. Li , W. L. Li , W. L. Li , X. R. Li , Xin Li , Y. Z. Li , Zhe Li , Zhuo Li , E. W. Liang , Y. F. Liang , S. J. Lin , B. Liu , C. Liu , D. Liu , H. Liu , H. D. Liu , J. Liu , J. L. Liu , J. Y. Liu , M. Y. Liu , R. Y. Liu , S. M. Liu , W. Liu , Y. Liu , Y. N. Liu , R. Lu , Q. Luo , H. K. Lv , B. Q. Ma , L. L. Ma , X. H. Ma , J. R. Mao , Z. Min , W. Mitthumsiri , H. J. Mu , Y. C. Nan , A. Neronov , Z. W. Ou , B. Y. Pang , P. Pattarakijwanich , Z. Y. Pei , M. Y. Qi , Y. Q. Qi , B. Q. Qiao , J. J. Qin , D. Ruffolo , A. Sáiz , D. Semikoz , C. Y. Shao , L. Shao , O. Shchegolev , X. D. Sheng , F. W. Shu , H. C. Song , Yu. V. Stenkin , V. Stepanov , Y. Su , Q. N. Sun , X. N. Sun , Z. B. Sun , P. H. T. Tam , Q. W. Tang , Z. B. Tang , W. W. Tian , C. Wang , C. B. Wang , G. W. Wang , H. G. Wang , H. H. Wang , J. C. Wang , K. Wang , L. P. Wang , L. Y. Wang , P. H. Wang , R. Wang , W. Wang , X. G. Wang , X. Y. Wang , Y. Wang , Y. D. Wang , Y. J. Wang , Z. H. Wang , Z. X. Wang , Zhen Wang , Zheng Wang , D. M. Wei , J. J. Wei , Y. J. Wei , T. Wen , C. Y. Wu , H. R. Wu , S. Wu , X. F. Wu , Y. S. Wu , S. Q. Xi , J. Xia , J. J. Xia , G. M. Xiang , D. X. Xiao , G. Xiao , G. G. Xin , Y. L. Xin , Y. Xing , Z. Xiong , D. L. Xu , R. F. Xu , R. X. Xu , W. L. Xu , L. Xue , D. H. Yan , J. Z. Yan , T. Yan , C. W. Yang , F. Yang , F. F. Yang , H. W. Yang , J. Y. Yang , L. L. Yang , M. J. Yang , R. Z. Yang , S. B. Yang , Y. H. Yao , Z. G. Yao , Y. M. Ye , L. Q. Yin , N. Yin , X. H. You , Z. Y. You , Y. H. Yu , Q. Yuan , H. Yue , H. D. Zeng , T. X. Zeng , W. Zeng , M. Zha , B. B. Zhang , F. Zhang , H. M. Zhang , H. Y. Zhang , J. L. Zhang , L. X. Zhang , Li Zhang , P. F. Zhang , P. P. Zhang , R. Zhang , S. B. Zhang , S. R. Zhang , S. S. Zhang , X. Zhang , X. P. Zhang , Y. F. Zhang , Yi Zhang , Yong Zhang , B. Zhao , J. Zhao , L. Zhao , L. Z. Zhao , S. P. Zhao , F. Zheng , B. Zhou , H. Zhou , J. N. Zhou , M. Zhou , P. Zhou , R. Zhou , X. X. Zhou , C. G. Zhu , F. R. Zhu , H. Zhu , K. J. Zhu , X. Zuo.