EPJ ST Special Issue: Nuclear Astrophysics in Our Time: Supernovae, Neutron Stars and Binary Neutron Star Mergers
- Published on 29 October 2019
The understanding of the final journey of a massive star, after its nuclear fuel has been exhausted, is a fascinating problem because it involves all the forces of nature. The outcome of it may be a supernova explosion and the residue either be a neutron star or a black hole. This is a highly interdisciplinary area of research involving astrophysics, general relativity, nuclear physics and particle physics. The core collapse supernova (CCSN) explo- sion mechanism is being investigated over the past five decades or so. Still, the detailed theory of a successful supernova explosion is eluding us and a challenging problem. Equation of state of matter from low to high density and neutrino interactions with matter are important microphysics inputs in CCSN.
The spectacular discovery of the first neutron star merger event GW170817 in gravitational waves and across the electromagnetic spectrum resulted in plethora of information about the short gamma ray burst, binary chirp mass, tidal deformability, speed of gravitational waves and the Hubble constant. Furthermore it is manifestly evident that GW170817 is a shot in the arm for nuclear astrophysics communities around the world as dense matter equa- tion of state in neutron stars and heavy element synthesis through r-process nucleosynthesis in the ejected neutron rich matter could be probed.
This shows that the birth of neutron stars through supernova explosion mechanism to binary neutron star mergers is finely linked by various aspects of nuclear astrophysics. It is the linkage that will be explored in this issue of European Physical Journal on Special Topics (EPJST) .
As the editor of this EPJST issue, I assist the EPJST board in compiling this issue and invite authors to submit their original research and short review articles for this collection of articles in nuclear astrophysics. Articles should be submitted to the Editorial Office of EPJ ST via the submission system at https://articlestatus.edpsciences.org/is/epjst/home.php by selecting "Nuclear Astrophysics in Our Time: Supernovae, Neutron Stars and Binary Neutron Star Mergers" as special issue not later than
Submission Deadline: 30 March 2020
I look forward to your submission for this special issue.
Debades Bandyopadhyay, Guest Editor
- Published on 11 September 2019
The understanding of wetting presents formidable challenges due to a multi-scale nature of the problem, where macroscopic behavior can be directly related to non-trivial microscopic and/or mesoscopic interactions. The aim of this topical issue is to provide to the community recent advances, unresolved problems, contemporary computational techniques and the state-of-the-art theoretical and experimental developments in the field of wetting phenomena in general. Probing the wetting phenomena down to the nano-scale can help to understand the physical processes involved in the interaction of a liquid with a solid surface and therefore the center of recent intense activities with the advent of new nano-materials. We aim to draw attention to some of key questions:
- What are the range of length and time scales characterizing the interaction of the substrate with the two-phase flow?
- Which computational tools are more amenable to a multiscale organization?
- Can matching hydrodynamic theories to a molecular description of the contact line be done seamlessly?
- What are the most appropriate existing or to be developed experiments for benchmarking computational results?
- Can we make more educated suggestions when to use which computational tools for a particular wetting system?
This special issue will invite original contributions and review-type articles to further foster and encourage synergetic discussions. Publications in such special issue should in principle contain, for example, one or more of the following topics, but not limited to:
- New modeling, experimental and computational approaches of wetting phenomena on small scales.
- Challenges in methodologies, numerical, theoretical and experimental, for probing wetting phenomena on nanoscales.
- New opportunities in multiscale modeling, bridging the dynamics of the contact line at the mesoscopic length scales to the macroscopic flow.
- Alternative observations/assessments of the wetting phenomena.
Guest Editors: Tatiana Gambaryan-Roisman, Shahriar Afkhami and Len Pismen
For any queries please contact Shahriar Afkhami.
Call for papers:
The Guest Editors invite authors to submit their original research and short reviews on the theme of the Special Issue of the European Physical Journal Special Topics. Articles should be submitted to the Editorial Office of EPJ ST by selecting the "Challenges in Nanoscale Physics of Wetting Phenomena" as a special issue at: https://articlestatus.edpsciences.org/is/epjst/home.phpAuthors submitting to the issue should follow submission guidelines here. Manuscripts should be prepared using the latex template of EPJ ST, which can be downloaded here.
- Published on 10 September 2019
EPJ ST Special Issue: Nonextensive Statistical Mechanics, Superstatistics and Beyond: Theory and Applications in Astrophysical and Other Complex Systems
- Published on 07 September 2018
After more than 140 years of impressive success there is no reasonable doubt that the Boltzmann-Gibbs (BG) entropy is the correct one to be used for a wide and important class of physical systems, basically those whose (nonlinear) dynamics is strongly chaotic i.e., for classical systems with positive maximal Lyapunov exponent, which are mixing and ergodic. However, a plethora of physical complex systems exists for which such simplifying dynamical hypotheses are violated; typical examples are those for which the maximal Lyapunov exponent vanishes, leading to sub-exponential sensitivity to the initial conditions, which can of course occur in a variety of mathematical ways.
Corresponding anomalies are found in a variety of quantum systems as well. In order to statistically describe the dynamics of such systems, various generalised forms of statistical mechanics have been proposed such as those using the nonadditive entropies Sq (where q is a real number which, for q=1, recovers the BG entropy), kappa distributions (also known as q-Gaussians, where kappa is simply related to q), superstatistical approaches, among various others. In the last decades, these new generalised statistical mechanical formalisms have found a large variety of very successful applications, even beyond the realm of physics. This special issue aims to cover the most recent analytical, experimental, observational and computational aspects and examples where these new extended formalisms have found fruitful applications.
Topics include, but are not limited to:
- Generalised Central Limit theorems
- Generalised Large deviation theory
- Low-dimensional nonlinear conservative and dissipative dynamical systems near the edge of chaos
- Long-range-interacting many-body classical Hamiltonian systems
- Complex networks
- Area-law-like quantum systems
- Applications in astrophysics, space and other plasma physics, geophysics, high energy physics, cosmology, granular matter, cold atoms, econophysics, theoretical and structural chemistry, biophysics, social systems, power grids, image and time series processing, among others.
Guest Editors: Andrea Rapisarda, Constantino Tsallis, Christian Beck, George Livadiotis, Ugur Tirnakli, and Giorgio Benedek.
Call for papers:
The Guest Editors invite authors to submit their original research and short reviews on the theme of the Special Issue of the European Physical Journal - Special Topics. Articles should be submitted to the Editorial Office of EPJ ST by selecting the "Nonextensive Statistical Mechanics, Superstatistics and Beyond" as a special issue at: https://articlestatus.edpsciences.org/is/epjst/home.php