Results 121 to 130 of about 199,466 (288)
Cosmic-ray acceleration in supernova remnants: non-linear theory revised [PDF]
, 2012 A rapidly growing amount of evidences, mostly coming from the recent gamma-ray observations of Galactic supernova remnants (SNRs), is seriously challenging our understanding of how particles are accelerated at fast shocks.
D. Caprioli
semanticscholar +1 more source
New Radio Observations of the Supernova Remnant CTA 1
The Astrophysical JournalWe present new radio images of the supernova remnant (SNR) CTA 1 at 1420 and 408 MHz, and in the 21 cm line of H i observed with the Dominion Radio Astrophysical Observatory Synthesis Telescope and at 1420 MHz observed with the Effelsberg 100 m telescope.
Tam Do +5 more
doaj +1 more source
The physics of asymmetric supernovae and supernovae remnants [PDF]
Advances in Applied Physics, 2018 We model the circumstellar medium with four density profiles: hyperbolic type, power law type, exponential type and Gaussian type. We solve analytically or numerically the four first-order differential equations which arise in the framework of the classical thin layer approximation.
openaire +4 more sources
Puzzling Pulsars and Supernova Remnants [PDF]
International Astronomical Union Colloquium, 2000 AbstractThe fact that the majority of the youngest radio pulsars are surrounded by expanding supernova remnants is strong evidence that neutron stars are produced in the supernovae of massive stars. In many cases, the pulsar appears significantly offset from the geometric centre of the supernova remnant, indicating that the neutron star has moved away ...
Duncan R. Lorimer, R. Ramachandran
openaire +4 more sources
Cosmological Dynamics of Interacting Dark Energy and Dark Matter in f(Q)$f(Q)$ Gravity
Fortschritte der Physik, EarlyView.Abstract In this work, the behavior of interacting dark energy (DE) and dark matter (DM) within a model of f(Q)$f(Q)$ gravity is explored, employing the standard framework of dynamical system analysis. The power‐law f(Q)$f(Q)$ model is considered, incorporating two different forms of interacting DE and DM: 3αHρm$3\alpha H\rho _m$ and α3HρmρDE$\frac ...
Gaurav N. Gadbail +3 more
wiley +1 more source
Progress on multi-waveband observations of supernova remnants [PDF]
arXiv, 2008 The development of observational techniques has inriched our knowledge of supernova remnants. In this paper, we review the main progresses in the last decade, including new discoveries of supernova remnants and the associated (rare type of) pulsars, nucleosynthesis, the interaction between supernova remnants and molecular clouds, dust in the supernova ...
arxiv
The Nature of Bilateral Supernova Remnants [PDF]
The Astrophysical Journal, 1998 35 pages (requires aaspp4.sty), 11 JPG figures, 2 PS figures. Accepted to "The Astrophysical Journal"
Bryan Gaensler, Bryan Gaensler
openaire +4 more sources
Initial spin periods of neutron stars in supernova remnants [PDF]
, 2012 We present estimates of initial spin periods, P0, for radio pulsars associated with supernova remnants. By using the published data on 30 objects, we were able to derive a reliable estimate for the initial spin period, assuming standard magneto-dipole ...
S. Popov, R. Turolla, R. Turolla
semanticscholar +1 more source
Mechanisms underlying the loss of migratory behaviour in a long‐lived bird
Journal of Animal Ecology, EarlyView.White stork populations in Iberia are undergoing a profound change in their migratory patterns, becoming mostly resident. By combining census data, GPS‐tracking and genomic analyses, Andrade et al. link this behavioural change to inter‐generational shifts in the frequency of migratory and non‐migratory young individuals (likely associated with ...
Pedro Andrade +7 more
wiley +1 more source
Modeling supernova remnants: effects of diffusive cosmic-ray acceleration on the evolution, application to observations [PDF]
, 2011 We present numerical models for supernova remnant evolution, using a new version of the hydrodynamical code SUPREMNA. We added cosmic ray diffusion equation to the code scheme, employing two-fluid approximation. We investigate the dynamics of the simulated supernova remnants with different values of cosmic ray acceleration efficiency and diffusion ...
arxiv +1 more source