Academic Articles & Research Papers

Physical Characterization of Early Galaxies in the Webb’s First Deep Field SMACS J0723.3-7327

This paper highlights initial photometric analyses of JWST NIRCam imaging data in the sightline of SMACS0723, aiming to identify galaxies at redshift z > 7. By applying a conservative Lyman-break selection followed by photometric-redshift a...

Not All Sub-Neptune Exoplanets Have Magma Oceans

The evolution and structure of sub-Neptunes may be strongly influenced by interactions between the outer gaseous envelope of the planet and a surface magma ocean. However, given the wide variety of permissible interior structures of these p...

An Image Encryption Transmission Scheme Based on a Polynomial Chaotic Map

Most existing chaotic systems have many drawbacks in engineering applications, such as the discontinuous range of chaotic parameters, weak chaotic properties, uneven chaotic sequence outputs, and dynamic degradation. Therefore, based on the...

27 yr of Spaceborne IR Astronomy: An ISO, Spitzer, WISE, and NEOWISE Survey for Large-amplitude Variability in Young Stellar Objects

Infrared observations can probe photometric variability across the full evolutionary range of young stellar objects (YSOs), from deeply embedded protostars to pre-main-sequence stars with dusty disks. We present 3–8 μ m light curves extendi...

Constraining young massive cluster properties with radio-continuum observations: The Arches cluster

Context. The Arches cluster, located in the Galactic Centre (GC) is one of the best astrophysical laboratories to study the properties of massive stars and young massive clusters (YMCs). However, despite having been observed for decades at ...

Integrability from point symmetries in a family of cosmological Horndeski Lagrangians

Abstract For a family of Horndeski theories, formulated in terms of a generalized Galileon model, we study the integrability of the field equations in a Friedmann–Lemaître–Robertson–Walker space-time. We are interested in point transformati...

Effects of Background Solar Wind and Drag Force on the Propagation of Coronal-mass-ejection-driven Shocks

The propagation of interplanetary shocks, particularly those driven by coronal mass ejections (CMEs), is still an outstanding question in heliophysics and space weather forecasting. Here, we address the effects of the ambient solar wind on ...

Yang–Mills black holes in quasitopological gravity

Abstract In this paper, we formulate two new classes of black hole solutions in higher curvature quartic quasitopological gravity with nonabelian Yang–Mills theory. At first step, we consider the SO(n) and $$SO(n-1,1)$$ S O ( n - 1 , 1 ) se...

On the Anisotropic Velocity Distribution of Newborn Pickup Ions in the Heliosheath

The evolution of the velocity distribution of pickup ions is crucial for understanding the energetic neutral atom (ENA) fluxes observed by Interstellar Boundary Explorer. Pickup ions in the heliosheath contain two main components: those tra...

FEAST: JWST Uncovers the Emerging Timescales of Young Star Clusters in M83

We present JWST NIRCam observations of the emerging young star clusters (eYSCs) detected in the nearby spiral galaxy M83. The NIRcam mosaic encompasses the nuclear starburst, the bar, and the inner spiral arms. The eYSCs, detected in Pa α a...

ASTROPHYSICS

Astrophysics is a branch of space science that applies the laws of physics and chemistry to seek to understand the universe and our place in it. The field explores topics such as the birth, life and death of stars, planets, galaxies, nebula...

Augmented Reality in astrophysics

Plasma Astrophysics

Advances in astronomy and astrophysics

Identification of periodic density structures in Solar Orbiter data: Helical structures and flux ropes

Context. Quasi-periodic density structures (PDSs) are quasiperiodic variations in the solar wind density that range from a few minutes to a few hours. They are trains of advected density structures with radial length scales LR ≈ 100 − 10 00...

Eclipsing Millisecond Pulsars with He Star Companions

Eclipsing millisecond pulsars (MSPs) are a type of pulsar binaries with close orbits (≲1.0 day). They are important objects for studying the accretion history of neutron stars (NSs), pulsar winds, and the origin of isolated MSPs, etc. Recen...

Review of cryptographic application security evaluation techniques for new critical infrastructures

The construction of new critical infrastructure, represented by high-speed full-time signal coverage, intelligent and fine-grained urban management, and deep space and deep sea scientific innovation experimental fields, has entered a new st...

International business and decentralized finance

Abstract Over the last decade, the green shoots of a new economic order have emerged as decentralized technologies challenge traditional financial systems. Decentralized finance (DeFi) holds the potential to transform international business...

International Business

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International Business Management

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