Decoding How Salamanders Walk (Biology)

Researchers at Tohoku University and the Swiss Federal Institute of Technology in Lausanne, with the support of the Human Frontier Science Program, have decoded the flexible motor control mechanisms underlying salamander walking. Their findings were published in the journal Frontiers in Neurorobotics on July 30, 2021. Animals with four feet can navigate complex, unpredictable, and … Continue reading Decoding How Salamanders Walk (Biology)

Discovery of Huge Raman Scattering at Atomic Point Contact (Physics)

Nanofabrication of electronic devices has reached a single nanometer scale (10-9 m). The rapid advancement of nanoscience and nanotechnology now requires atomic-scale optical spectroscopy in order to characterize atomistic structures that will affect the properties and functions of the electronic devices. The international team headed by Takashi Kumagai at Institute for Molecular Science discovered a huge … Continue reading Discovery of Huge Raman Scattering at Atomic Point Contact (Physics)

Is It A Wormhole Which Is Expanding?: PART 2: Blackhole Collapse vs. Inflation (Astronomy)

Previously on “Is it a wormhole which is expanding?: PART 1”, we saw that in 1999, Sean hayward proposed a concept that if wormhole negative energy source fails it may collapse into a black hole. He used 3-step penrose diagrams in order to explain this process. Along with all these concepts, he also proposed that … Continue reading Is It A Wormhole Which Is Expanding?: PART 2: Blackhole Collapse vs. Inflation (Astronomy)

Is It a Wormhole, Which Is Expanding?: PART 1: Blackholes vs. Wormholes (Astronomy)

In 1999, Sean Hayward proposed a framework for general dynamic wormholes, unifying them with black holes. Both are generically defined locally by outer trapping horizons, temporal for wormholes and spatial or null for black and white holes. Thus, wormhole horizons are two-way traversible, while black-hole and white-hole horizons are only one-way traversible. It follows from … Continue reading Is It a Wormhole, Which Is Expanding?: PART 1: Blackholes vs. Wormholes (Astronomy)

Can GRB 200826A Originate From the Collapse of A Thorne-Zytkow-like Object? (Planetary Science)

In the recent study, Bin-Bin Zhang and colleagues proposed that the Type II Gamma-ray Burst (GRB) 200826A can originate from the collapse of a Thorne-Zytkow-like Object (TZlO). They found that the collapse of such a TZlO can naturally explain the short duration of GRB 200826A. Their study recently appeared in Arxiv. The recently reported Type … Continue reading Can GRB 200826A Originate From the Collapse of A Thorne-Zytkow-like Object? (Planetary Science)

How Would Be Rotating and Non Rotating Dark Energy Stars? (Cosmology)

By adopting the extended Chaplygin equation-of-state, Ilidio Lopes and colleagues carried out study on the isotropic and slowly-rotating dark energy stars. They found that the moment of inertia increases with the mass of the star and in the case of non-rotating objects the moment of inertia grows faster. Their study recently appeared in Arxiv. A … Continue reading How Would Be Rotating and Non Rotating Dark Energy Stars? (Cosmology)

What Are The Properties of Thorne-Żytkow Object Explosions? (Planetary Science)

Takashi Moriya and Sergei Blinnikov investigated the outcomes of the potential TŻO explosions and shed light on their expected observational properties. Their study recently appeared in Arxiv. Thorne-Żytkow objects are stars that have a neutron star core with an extended hydrogen-rich envelope. Previously, Takashi Moriya et al. suggested that the massive Thorne-Żytkow objects are proposed … Continue reading What Are The Properties of Thorne-Żytkow Object Explosions? (Planetary Science)

Whats The Importance Of Black Hole Repositioning? (Cosmology)

Based on a suite of smoothed particle hydrodynamics simulations with the swift code and a Bondi-Hoyle-Lyttleton subgrid gas accretion model, Yannick Bahe and colleagues investigated the impact of repositioning on SMBH growth and on other baryonic components through AGN feedback. They found that repositioning has direct physical consequences such as it promotes SMBH mergers and … Continue reading Whats The Importance Of Black Hole Repositioning? (Cosmology)

What Is The Structure & Properties Of Accretion Disk Around A Rotating Black Hole Without Reflection Symmetry? (Cosmology)

By adopting a theory-agnostic approach and considering a recently proposed Kerr-like black hole model, Chen and Yang investigated the structure and properties of accretion disk around a rotating black hole without reflection symmetry. They showed that, in the absence of reflection symmetry, the accretion disk is curved surface in shape. Furthermore, they found that the … Continue reading What Is The Structure & Properties Of Accretion Disk Around A Rotating Black Hole Without Reflection Symmetry? (Cosmology)