Results 71 to 80 of about 921 (183)

Mapping the Dense Molecular Gas toward 13 Supernova Remnants

The Astrophysical Journal
Supernova remnants (SNRs) can exert strong influence on molecular clouds (MCs) through interaction by shock wave and cosmic rays. In this paper, we present our mapping observation of HCO ^+ and $\mathrm{HCN}$ 1–0 lines toward 13 SNRs interacting with MCs,
Tian-Yu Tu, Yang Chen, Qian-Cheng Liu
doaj   +1 more source

Nonthermal Signatures of Radiative Supernova Remnants

The Astrophysical Journal
The end of supernova remnant (SNR) evolution is characterized by a so-called “radiative” stage, in which efficient cooling of the hot bubble inside the forward shock slows expansion, leading to eventual shock breakup.
Rebecca Diesing, Minghao Guo, Chang-Goo Kim, James Stone, Damiano Caprioli   +4 more
doaj   +1 more source

Supernova Remnants with Fermi Large Area Telescope

EPJ Web of Conferences, 2017
The Large Area Telescope (LAT), on-board the Fermi satellite, proved to be, after 8 years of data taking, an excellent instrument to detect and observe Supernova Remnants (SNRs) in a range of energies running from few hundred MeV up to few hundred GeV ...
Caragiulo M., Di Venere L.
doaj   +1 more source

Bell Instability–mediated Diffusive Shock Acceleration at Supernova Blast Wave Shock Propagating in the Interstellar Medium

The Astrophysical Journal
Supernova blast wave shock is a very important site of cosmic-ray acceleration. However, the detailed physical process of acceleration, in particular, nonlinear interplay between cosmic-ray streaming and magnetic field amplification, has not been studied
Tsuyoshi Inoue, Alexandre Marcowith, Gwenael Giacinti   +2 more
doaj   +1 more source

Deep Optical Emission-line Images of Nine Known and Three New Galactic Supernova Remnants

The Astrophysical Journal Supplement Series
Deep optical emission-line images are presented for nine known plus three new Galactic supernova remnants (SNRs), all but one having at least one angular dimension >1°.
Robert A. Fesen, Marcel Drechsler, Xavier Strottner, Bray Falls, Yann Sainty, Nicolas Martino, Richard Galli, Mathew Ludgate, Markus Blauensteiner, Wolfgang Reich, Sean Walker, Dennis di Cicco, David Mittelman, Curtis Morgan, Aziz Ettahar Kaeouach, Justin Rupert, Zouhair Benkhaldoun   +16 more
doaj   +1 more source

Measurement of Anisotropies in Supernova Remnant Observations and Their Interpretation Using Numerical Models

The Astrophysical Journal
Supernova remnants (SNRs) exhibit varying degrees of anisotropy, which have been extensively modeled using numerical methods. We implement a technique to measure anisotropies in SNRs by calculating power spectra from their high-resolution images. To test
Soham Mandal, Paul C. Duffell, Abigail Polin, Dan Milisavljevic   +3 more
doaj   +1 more source

Supernovae and the Arrow of Time. [PDF]

Entropy (Basel), 2022
Abarzhi SI, Hill DL, Naveh A, Williams KC, Wright CE.   +4 more
europepmc   +1 more source

Time Evolution of the Synchrotron X-Ray Emission in Kepler’s Supernova Remnant: The Effects of Turbulence and Shock Velocity

The Astrophysical Journal
The maximum energy of electrons in supernova remnant (SNR) shocks is typically limited by radiative losses, where the synchrotron cooling time equals the acceleration time.
Vincenzo Sapienza, Marco Miceli, Oleh Petruk, Aya Bamba, Satoru Katsuda, Salvatore Orlando, Fabrizio Bocchino, Tracey DeLaney   +7 more
doaj   +1 more source

Continuous solutions of cosmic-rays and waves in astrophysical environments. [PDF]

Sci Rep, 2023
Irshad K, Ramzan B, Qazi SNA, Areeb F, Rasheed A, Jamil M.   +5 more
europepmc   +1 more source

A persistent influence of supernovae on biodiversity over the Phanerozoic. [PDF]

Ecol Evol, 2023
Svensmark H.
europepmc   +1 more source