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Aims: We study the supernova remnant 0506-68 in order to obtain detailed information about, among other things, the ionisation state and age of the ionised plasma. Methods: Using the Reflection Grating Spectrometer (RGS) onboard the…

高能天体物理现象 · 物理学 2015-05-30 S. Broersen , J. Vink , J. Kaastra , J. Raymond

The processes responsible for the broad-band radiation of the young supernova remnant Cas A are explored using a new code which is designed for a detailed treatment of the diffusive shock acceleration of particles in nonlinear regime. The…

高能天体物理现象 · 物理学 2015-06-16 V. N. Zirakashvili , F. A. Aharonian , R. Yang , E. Ona-Wilhelmi , R. J. Tuffs

Context. Supernova remnants (SNRs) are thought to be the primary candidates for the sources of Galactic cosmic rays. According to the diffusive shock acceleration theory, SNR shocks produce a power-law spectrum with an index of s = 2,…

高能天体物理现象 · 物理学 2015-06-12 I. Telezhinsky , V. V. Dwarkadas , M. Pohl

We investigate the evolution of spherically symmetric supernova remnants in which mass loading takes place due to conductively driven evaporation of embedded clouds. Numerical simulations reveal significant differences between the evolution…

天体物理学 · 物理学 2011-05-23 J. M. Pittard , S. J. Arthur , J. E. Dyson , S. A. E. G. Falle , T. W. Hartquist , M. I. Knight , M. Pexton

The shock fronts of supernova remnants (SNRs) are believed to be significant sites of acceleration of cosmic ray particles. Previous researchers have shown that a particle distribution similar to a log-parabola can be generated when…

高能天体物理现象 · 物理学 2026-04-22 Joshua J. Ziegler , Justin D. Finke , J. Martin Laming

We report the detection of near-infrared (NIR) [Fe II] (1.644 $\mu$m) and H$_{2}$ 1-0 S(1) (2.122 $\mu$m) line features associated with Galactic supernova remnants (SNRs) in the first quadrant using two narrowband imaging surveys, UWIFE and…

星系天体物理 · 物理学 2019-02-27 Yong-Hyun Lee , Bon-Chul Koo , Jae-Joon Lee , Michael G. Burton , Stuart Ryder

With the aim of improving our knowledge on supernova (SN) 1987A-like objects and, more in general, on H-rich SNe, we have developed a new analytic model to describe their post-explosive evolution. The distinctive features of this model are…

高能天体物理现象 · 物理学 2025-02-21 M. L. Pumo , S. P. Cosentino

We present numerical simulations of the evolution of a supernova (SN) remnant expanding into a uniform background medium with density $n_H = 1.0$ cm$^{-3}$ and temperature of $10^4$ K. We include a dynamically evolving non-equilibrium…

星系天体物理 · 物理学 2021-03-17 Kartick Chandra Sarkar , Orly Gnat , Amiel Sternberg

We present a new version of a semi-analytic model of cosmological galaxy formation, incorporating a star formation law with a feedback depending on the galaxy-scale mean dust opacity and metallicity, motivated by recent observations of star…

宇宙学与河外天体物理 · 物理学 2015-06-18 Ryu Makiya , Tomonori Totani , Masakazu A. R. Kobayashi , Masahiro Nagashima , Tsutomu T. Takeuchi

A new method for measuring gravitational lensing with high redshift type Ia supernovae is investigated. The method utilizes correlations between foreground galaxies and supernova brightnesses to substantially reduce possible systematic…

天体物理学 · 物理学 2017-03-22 R. Benton Metcalf

Two new equations of motion for a supernova remnant (SNR) are derived in the framework of energy conservation for the thin-layer approximation. The first one is based on an inverse square law for the surrounding density and the second one…

高能天体物理现象 · 物理学 2021-06-10 Lorenzo Zaninetti

Strong gravitational lensing by massive galaxy clusters offers rare opportunities to observe multiple images of distant ($z \gtrsim 2$) Type Ia supernovae (SNe) and to resolve the properties of their host galaxies. A recent outstanding…

This paper aims to give a brief review of a new concept for the preliminary determination of the evolutionary status of supernova remnants (SNRs). Data obtained by radio observations in continuum are used. There are three different methods…

高能天体物理现象 · 物理学 2022-06-29 Dejan Urošević

We present optical ccd images of the large supernova remnant (SNR) G132.7$+$1.3 (HB3) covering its full extent for the first time, in the emission lines of H$\alpha+$[N II], [S II] and [O III], where new and known filamentary and diffuse…

We present observations of the young Supernova remnant (SNR) RX J1713.7-3946 with the Fermi Large Area Telescope (LAT). We clearly detect a source positionally coincident with the SNR. The source is extended with a best-fit extension of…

高能天体物理现象 · 物理学 2011-05-25 A. A. Abdo , Fermi LAT Collaboration

Supernova remnants (SNRs) are known to accelerate particles to relativistic energies, on account of their nonthermal emission. The observational progress from radio to gamma-ray observations reveals more and more morphological features that…

高能天体物理现象 · 物理学 2021-11-03 Robert Brose , Martin Pohl , Iurii Sushch

Supernova remnants (SNRs) arise from the interaction between the ejecta of a supernova (SN) explosion and the surrounding circumstellar and interstellar medium. Some SNRs, mostly nearby SNRs, can be studied in great detail. However, to…

高能天体物理现象 · 物理学 2018-04-25 Knox S. Long

We present the largest extragalactic survey of supernova remnant (SNR) candidates in nearby star-forming galaxies using exquisite spectroscopic maps from MUSE. Supernova remnants exhibit distinctive emission-line ratios and kinematic…

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…

The supernova remnants left behind by Type Ia supernovae provide an excellent opportunity for the study of these enigmatic objects. In a previous work, we showed that it is possible to use the X-ray spectra of young Type Ia supernova…

天体物理学 · 物理学 2009-11-10 C. Badenes , K. J. Borkowski , E. Bravo