Maser
View article: Diverse stages of star formation in the IRAS 18162-2048 region. Emergence of UV Feedback
Diverse stages of star formation in the IRAS 18162-2048 region. Emergence of UV Feedback Open
Methods: We obtained adaptive optics-assisted integral field spectroscopy in the near-infrared (IR) $K$ band ($1.93-2.47 \mathrm{μm}$) with VLT/SINFONI, complemented by VLA X and C bands (3$-$6 cm) and ALMA band 3 ($\sim$3.3 mm) observatio…
View article: Diverse stages of star formation in the IRAS 18162-2048 region. Emergence of UV Feedback
Diverse stages of star formation in the IRAS 18162-2048 region. Emergence of UV Feedback Open
Methods: We obtained adaptive optics-assisted integral field spectroscopy in the near-infrared (IR) $K$ band ($1.93-2.47 \mathrm{μm}$) with VLT/SINFONI, complemented by VLA X and C bands (3$-$6 cm) and ALMA band 3 ($\sim$3.3 mm) observatio…
View article: A Proposed Laboratory Test of Einstein's One-Way Light-Speed Isotropy Convention Using a Mid-Point Timing Measurement
A Proposed Laboratory Test of Einstein's One-Way Light-Speed Isotropy Convention Using a Mid-Point Timing Measurement Open
Special Relativity rests on two postulates and one critical convention: that the one-way speed of light is isotropic (c in both directions) in every inertial frame. This convention is not directly testable by any experiment that presuppose…
View article: A Proposed Laboratory Test of Einstein's One-Way Light-Speed Isotropy Convention Using a Mid-Point Timing Measurement
A Proposed Laboratory Test of Einstein's One-Way Light-Speed Isotropy Convention Using a Mid-Point Timing Measurement Open
Special Relativity rests on two postulates and one critical convention: that the one-way speed of light is isotropic (c in both directions) in every inertial frame. This convention is not directly testable by any experiment that presuppose…
View article: First detections of methanol maser lines from a rare transition family
First detections of methanol maser lines from a rare transition family Open
We report the first observations in a rare family of class II methanol maser transitions in both CH$_3$OH and $^{13}$CH$_3$OH toward three southern high-mass star formation regions, along with the first maser detected in the $^{13}$CH$_3$O…
View article: Vacuum Stiffness Evolution and Its Observable Consequences from Atoms to Earth Scale
Vacuum Stiffness Evolution and Its Observable Consequences from Atoms to Earth Scale Open
A cosmologically evolving scalar stiffness field k(t) = k0e2βϕ(t) can modify theamplitude phase space of bound quantum systems. If oscillator amplitudes scaleas A ∝ k−1/2, then both electronic and nuclear binding energies acquire a small,s…
View article: Vacuum Stiffness Evolution and Its Observable Consequences from Atoms to Earth Scale
Vacuum Stiffness Evolution and Its Observable Consequences from Atoms to Earth Scale Open
A cosmologically evolving scalar stiffness field k(t) = k0e2βϕ(t) can modify theamplitude phase space of bound quantum systems. If oscillator amplitudes scaleas A ∝ k−1/2, then both electronic and nuclear binding energies acquire a small,s…
View article: Hydrogen Maser and Optical Lattice Clocks as a Test of Cosmic Stiffness
Hydrogen Maser and Optical Lattice Clocks as a Test of Cosmic Stiffness Open
We analyze long-term frequency drift discrepancies between hydrogen masers and state-of-the-art optical lattice clocks (Sr, Yb, Hg). While optical clocks show no measurable secular drift at the level of 10−18 yr−1 , hydrogen masers consist…
View article: Hydrogen Maser and Optical Lattice Clocks as a Test of Cosmic Stiffness
Hydrogen Maser and Optical Lattice Clocks as a Test of Cosmic Stiffness Open
We analyze long-term frequency drift discrepancies between hydrogen masers and state-of-the-art optical lattice clocks (Sr, Yb, Hg). While optical clocks show no measurable secular drift at the level of 10−18 yr−1 , hydrogen masers consist…
View article: Edge-On Disk Study (EODS)
Edge-On Disk Study (EODS) Open
Context . Investigating the vertical distribution of molecular content in protoplanetary disks remains difficult in most disks mildly inclined along the line of sight. In contrast, edge-on disks provide a direct (tomographic) view of the 2…
View article: First detections of methanol maser lines from a rare transition family
First detections of methanol maser lines from a rare transition family Open
We report the first observations in a rare family of class II methanol maser transitions in both CH 3 OH and 13 CH 3 OH toward three southern high-mass star formation regions, along with the first maser detected in the 13 CH 3 OH line. The…
View article: Predicting Galactic OH Masers from Dense Clump Properties with Neural Networks and Generalized Linear Models
Predicting Galactic OH Masers from Dense Clump Properties with Neural Networks and Generalized Linear Models Open
We develop predictive models for OH maser occurrence in Galactic star-forming regions by integrating dense-clump physical properties from the APEX Telescope Large Area Survey of the Galaxy (ATLASGAL) and Herschel Infrared Galactic Plane Su…
View article: Thermodynamic Framework for Coherently Driven Systems
Thermodynamic Framework for Coherently Driven Systems Open
The laws of thermodynamics are a cornerstone of physics. At the nanoscale, where fluctuations and quantum effects matter, there is no unique thermodynamic framework because thermodynamic quantities such as heat and work depend on the acces…
View article: Evolution of action-space coherence in a Milky Way-like simulation
Evolution of action-space coherence in a Milky Way-like simulation Open
Efforts to dynamically trace stars back to the now-dissolved clusters in which they formed rely implicitly on the assumption that stellar orbital actions are conserved. While this holds in a static, axisymmetric potential, it is unknown ho…
View article: Electron Cyclotron Maser Emission as the Driving Mechanism in Long-Period Radio Transients
Electron Cyclotron Maser Emission as the Driving Mechanism in Long-Period Radio Transients Open
Long-period radio transients (LPRTs) are highly polarised, coherent radio sources with periods of minutes to hours and bursts typically lasting 10-100s. We argue that electron cyclotron maser emission (ECME) explains their narrow duty cycl…
View article: Electron Cyclotron Maser Emission as the Driving Mechanism in Long-Period Radio Transients
Electron Cyclotron Maser Emission as the Driving Mechanism in Long-Period Radio Transients Open
Long-period radio transients (LPRTs) are highly polarised, coherent radio sources with periods of minutes to hours and bursts typically lasting 10-100s. We argue that electron cyclotron maser emission (ECME) explains their narrow duty cycl…
View article: Evolution of action-space coherence in a Milky Way-like simulation
Evolution of action-space coherence in a Milky Way-like simulation Open
Efforts to dynamically trace stars back to the now-dissolved clusters in which they formed rely implicitly on the assumption that stellar orbital actions are conserved. While this holds in a static, axisymmetric potential, it is unknown ho…
View article: Millimeter-wave Spectrum Analysis and Searches for 2-aminopropenenitrile ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi>H</mml:mi> <mml:mn>2</mml:mn> </mml:msub> <mml:mi>C</mml:mi> <mml:mtext>=</mml:mtext> <mml:mi>C</mml:mi> <mml:mo>(</mml:mo> <mml:msub> <mml:mi>NH</mml:mi> <mml:mn>2</mml:mn> </mml:msub> <mml:mo>)</mml:mo> <mml:mi>CN</mml:mi> </mml:math> ) toward the Galactic Center Sources Sgr B2(N1) and G+0.693–0.027
Millimeter-wave Spectrum Analysis and Searches for 2-aminopropenenitrile ( ) toward the Galactic Center Sources Sgr B2(N1) and G+0.693–0.027 Open
We present an analysis of the millimeter-wave spectra of 2-aminopropenenitrile ( ), an α -aminonitrile of plausible prebiotic and astrophysical relevance. The molecule has a rotational spectrum that is in harmony with a large-…
View article: Stabilized Quantum Harmonic-Field (SQHF) Drive. A Feasible Pathway to Subluminal Interstellar Propulsion
Stabilized Quantum Harmonic-Field (SQHF) Drive. A Feasible Pathway to Subluminal Interstellar Propulsion Open
The Stabilized Quantum Harmonic-Field (SQHF) Drive represents an advanced subluminal propulsion system designed to enable crewed interstellar missions at velocities up to 0.99c. Evolving from prior concepts such as the Quantum-Anchored Har…
View article: Stabilized Quantum Harmonic-Field (SQHF) Drive. A Feasible Pathway to Subluminal Interstellar Propulsion
Stabilized Quantum Harmonic-Field (SQHF) Drive. A Feasible Pathway to Subluminal Interstellar Propulsion Open
The Stabilized Quantum Harmonic-Field (SQHF) Drive represents an advanced subluminal propulsion system designed to enable crewed interstellar missions at velocities up to 0.99c. Evolving from prior concepts such as the Quantum-Anchored Har…
View article: Coherent Resonant Aneutronic Torsion-Plasma Drive (CRATP-Drive): A Refined Framework for Stable Subluminal Interstellar Propulsion
Coherent Resonant Aneutronic Torsion-Plasma Drive (CRATP-Drive): A Refined Framework for Stable Subluminal Interstellar Propulsion Open
The Coherent Resonant Aneutronic Torsion-Plasma (CRATP) Drive advances the Resonant Aneutronic Torsion-Plasma (RATP) system by incorporating a Quantum Resonance Feedback System (QRFS) to achieve near-zero warp field instability. This fifth…
View article: Coherent Resonant Aneutronic Torsion-Plasma Drive (CRATP-Drive): A Refined Framework for Stable Subluminal Interstellar Propulsion
Coherent Resonant Aneutronic Torsion-Plasma Drive (CRATP-Drive): A Refined Framework for Stable Subluminal Interstellar Propulsion Open
The Coherent Resonant Aneutronic Torsion-Plasma (CRATP) Drive advances the Resonant Aneutronic Torsion-Plasma (RATP) system by incorporating a Quantum Resonance Feedback System (QRFS) to achieve near-zero warp field instability. This fifth…
View article: A new estimate of the zero-point shift of the Gaia DR3 parallaxes obtained from a comparison with VLBI measurements of masers and radio stars
A new estimate of the zero-point shift of the Gaia DR3 parallaxes obtained from a comparison with VLBI measurements of masers and radio stars Open
The most complete sample of radio stars and masers with trigonometric parallaxes measured by the VLBI method, common with the Gaia EDR3 and Gaia DR3 catalogs, has been compiled using literature data. The sample contains 151 stars. An analy…
View article: A new estimate of the zero-point shift of the Gaia DR3 parallaxes obtained from a comparison with VLBI measurements of masers and radio stars
A new estimate of the zero-point shift of the Gaia DR3 parallaxes obtained from a comparison with VLBI measurements of masers and radio stars Open
The most complete sample of radio stars and masers with trigonometric parallaxes measured by the VLBI method, common with the Gaia EDR3 and Gaia DR3 catalogs, has been compiled using literature data. The sample contains 151 stars. An analy…
View article: Relativistic Maxwell-Bloch Equations with Applications to Astrophysics
Relativistic Maxwell-Bloch Equations with Applications to Astrophysics Open
We derive relativistic Maxwell-Bloch equations for potential applications in astronomical environments, where various radiative processes are known to occur, including the maser action and Dicke's superradiance. We show that for both pheno…
View article: Relativistic Maxwell-Bloch Equations with Applications to Astrophysics
Relativistic Maxwell-Bloch Equations with Applications to Astrophysics Open
We derive relativistic Maxwell-Bloch equations for potential applications in astronomical environments, where various radiative processes are known to occur, including the maser action and Dicke's superradiance. We show that for both pheno…
View article: Analysis of the magnetic fields in massive young stellar objects with masers
Analysis of the magnetic fields in massive young stellar objects with masers Open
We analyze observational data on methanol masers in the disks of young massive stellar objects in the massive star formation regions: NGC6334I, G33.641-0.228, G12.89+0.49. Special attention is paid to analysis of the magnetic fields and th…
View article: Analysis of the magnetic fields in massive young stellar objects with masers
Analysis of the magnetic fields in massive young stellar objects with masers Open
We analyze observational data on methanol masers in the disks of young massive stellar objects in the massive star formation regions: NGC6334I, G33.641-0.228, G12.89+0.49. Special attention is paid to analysis of the magnetic fields and th…
View article: Feasibility of Free-Space Transmission using L-Band Maser Signals in Organic Gain Media
Feasibility of Free-Space Transmission using L-Band Maser Signals in Organic Gain Media Open
Atmospheric conditions such as fog, humidity, and scattering by foliage routinely degrade optical free-space (FS) links, motivating alternatives that are robust in adverse conditions. Coherent microwave sources offer a compelling alternati…
View article: A magnetic field study of two fast-rotating, radio bright M dwarfs. StKM 1-1262 and V374 Peg
A magnetic field study of two fast-rotating, radio bright M dwarfs. StKM 1-1262 and V374 Peg Open
Radio observations at low frequencies are sensitive to the magnetic activity of stars and the plasma environment surrounding them. The accurate interpretation of the processes underlying the radio signatures requires a detailed characteris…