Researchers at Dartmouth College have developed a theory that produces and detects light in a vacuum, challenging classical physics. The experiment uses an accelerating diamond membrane to create photons, which are then amplified by multiple photon detectors.
Recent studies suggest that cosmic rays, originating from supernova remnants and pulsars, have a significant impact on galactic dynamics and star formation. The streaming instability triggered by cosmic rays in the interstellar medium can create plasma waves that heat and scatter gas, influencing the formation of planets and stars.
Researchers have made the first direct observation of light from behind a black hole, confirming a key prediction by Einstein's theory of general relativity. The discovery was made using X-rays emitted by a supermassive black hole at a galaxy 800 million light-years away.
A team of researchers from the Flatiron Institute and Princeton University has found that the magnetic field around a black hole quickly decays when surrounded by plasma. This process, known as 'magnetic reconnection,' rapidly drains the magnetic field and could explain flares seen near supermassive black holes.
A study of 19,862 Japanese participants aged 65+ used machine learning to analyze oral and general health. The analysis found robust associations between self-rated oral and general health, with oral health predicting general health more accurately than vice versa.
The Kepler Space Telescope has discovered four new planets that are consistent with Earth-sized masses and may be free-floating in space. These findings suggest the existence of a population of free-floating planets, which could have been ejected from host stars by gravitational forces.
A prospective study analyzing plasma metabolomics during general anesthesia in patients with pancreatic malignancy reveals perioperative tryptophan depletion and increased taurine synthesis. This finding has implications for personalized perioperative management and may identify therapeutic windows for immunotherapy or chemotherapy.
Researchers aim to detect gravitational wave signals with frequencies 11 orders of magnitude below those detected by LIGO. The NANOGrav center will use radio pulsars and telescopes to search for a 'chorus' of signals from super-massive black hole mergers.
Researchers found that even with a small number of gravitational wave events, small modeling errors can accumulate and lead to misleading deviations from general relativity. This highlights the importance of considering theoretical model errors when testing Einstein's theory.
A new analysis by Massachusetts General Hospital researchers found that COVID-19 disproportionately affected people of color, low-income populations, and those with certain socioeconomic characteristics. The study, based on data from 394,536 patients, highlights the role of structural factors in the pandemic's spread.
Heavy water significantly reduces cellular dynamics without damaging cells, a finding with implications for organ transplants and tissue storage. The study's results suggest increased interaction between structural proteins and reversible effects, paving the way for further research into this phenomenon.
A Penn State scientist has developed a new mathematical formula that may solve the decades-old problem of spacetime in Einstein's theories of relativity. By placing space and time on an equal footing, Gopalan's approach removes the negative sign problem, allowing for traditional Euclidean geometry to be applied.
The LISA-Taiji network can constrain the Hubble parameter within 1% accuracy in just 5 years, potentially beating existing errors. Gravitational wave signals from compact binary coalescence offer a novel window for Hubble parameter determination.
Researchers at Dana-Farber Cancer Institute presented numerous studies on various types of cancer, including kidney cancer, melanoma, and lung cancer. The studies focused on innovative treatments, diagnostic advances, and patient outcomes.
New research uses M87* data to test Einstein-based and string-inspired theories, constraining the validity of these models. The study suggests that current data aligns well with Einstein's theory and has limitations for string-based theories.
A fixed-dose combination of nivolumab and relatlimab demonstrated a statistically significant benefit over anti-PD-1 monotherapy in metastatic melanoma. The study found that patients treated with the combination therapy had a median progression-free survival of 10.1 months, compared to 4.6 months for those treated with nivolumab alone.
The study determines that the ALT rotational transformation accurately describes the relativistic effects in rotating frames, revealing a fundamental framework for spacetime. The results confirm length contraction and time dilation within an absolute simultaneity framework.
Experts propose making general anaesthesia available to dying patients, citing high public support. This would provide unconsciousness during final moments, alleviating suffering.
Data from 19 observatories reveal insight into M87's behavior, spin, and energy output, improving tests of Einstein's General Theory of Relativity. The observations also shed light on cosmic rays and their origin.
Researchers propose using electron holes as a solution to operational speed/coherence trade-off in quantum computing. Theoretical studies predict holes can be used to create robust quantum bits with optimal operation points for ultrafast and highly coherent performance.
Researchers have discovered that missing baryonic matter is found in the space between galaxies as hot, low-density gas. This study also provides new insights into the nature of gravity, showing that observations are compatible with Einstein's theory of General Relativity.
Researchers used cosmic microwave background data to map location and density of missing baryons around galaxy groups. The measurements reveal that these halos extend up to 6 million light-years from their center, challenging previous models.
Researchers develop theoretical model suggesting microscopic wormholes could be traversable without exotic matter, using Dirac field to describe probability density function of particles. The model proposes that certain elementary particles like electrons and electromagnetic waves could traverse tiny tunnels in spacetime.
Researchers successfully connected two crucial equations, bridging relativity and quantum mechanics. Prof. Chen's work introduces bold ideas to solve previously unsolved equations.
Researcher Dr. Erik Lentz discovered a new class of hyper-fast 'solitons' that can enable travel at any speed without requiring exotic matter with negative energy density. The equations used in this research would allow space travel to Proxima Centauri and back within years, compared to current rocket technology's 50,000-year journey.
A new general relativistic framework for models of galactic rotation curves alleviates the need for dark matter by incorporating gravitomagnetic fields. The theory proposes that these fields can explain the effects of dark matter, suggesting a possible elimination of this form of matter.
An international team of experts has demonstrated that only quantum gravity can create a specific ingredient needed for quantum computation. The proposed experiment involves cooling billions of atoms to extremely low temperatures and applying a magnetic field, which would reveal the underlying gravity if it's quantum.
Electrons in Earth's radiation belt can be accelerated to ultra-relativistic energies when plasma density is extremely low, enabling them to surf on plasma waves and take energy from them. This two-stage acceleration process may also occur in other astrophysical objects.
Researchers have discovered a phenomenon where extreme black holes exhibit 'gravitational hair', a measurable quantity that depends on the black hole's formation process. This finding violates the 'no hair' theorem, which states that all black holes are identical and can be fully characterized by their mass, spin, and charge.
A new research project aims to control electron flow in semimetals, enabling the development of novel quantum sensors. The TOPREL project will unify theoretical foundations from various physics areas, unleashing the potential of semimetals.
Scientists have achieved a record-breaking transmission of a laser signal through the atmosphere, eliminating turbulence. This breakthrough enables precise time comparisons and has exciting applications in fundamental physics research, including testing Einstein's theory of general relativity.
Physicists Luca Comisso and Felipe Asenjo propose a new method to extract energy from rotating black holes by breaking and reconnecting magnetic field lines. This process could accelerate plasma particles to negative energies, allowing for massive amounts of energy extraction with an efficiency of up to 150%.
The discovery uses a deep residual neural net trained on real data to uncover warped and stretched images of distant galaxies. The new lenses provide astronomers with targets to measure fundamental properties of the Universe, including the Hubble constant.
A new study found that 1 in 256 women experienced accidental awareness during pregnancy-related surgery, with 12 reports of awareness identified. The research suggests a higher incidence of awareness in pregnant women compared to the general surgical population.
Researchers have discovered turbulent-like dynamics in the human brain using fMRI, suggesting a new way to analyze and model whole-brain dynamics. This finding could lead to improved mental health treatments for neuropsychiatric diseases.
A team of scientists from Rochester Institute of Technology and Instituto Argentino de Radioastronomiá completed a yearlong pulsar timing study using two upgraded radio telescopes in Argentina. The observations provided accurate bounds to gravitational waves, increasing the sensitivity of existing pulsar timing arrays.
Osaka University researchers created light bullets with controllable velocities, opening up opportunities for free-space communication, bio-imaging, and particle acceleration. By deforming pulse-fronts, they can achieve variable velocities during a single propagation path.
Physicists propose an experiment to test if gravity is a quantum phenomenon, involving entangled diamonds in freefall. A conducting copper plate shields the Casimir effect, reducing noise and making the experiment less demanding.
Researchers have developed a new theory for observing the quantum vacuum, which could lead to new insights into black hole behavior. By using sound particles and ultra-cold atoms, they created a two-dimensional cloud where sound waves become audible to an accelerated observer in a silent phonon vacuum.
RIT scientists developed record-breaking simulations of unequal mass black hole mergers to aid the development of next-generation gravitational wave detectors. These simulations calculate key properties of merged black holes, enabling the comparison of signals received by advanced detectors.
Astronomers have developed a new method to detect dark matter haloes surrounding galaxies, allowing for more precise measurements of the invisible mass. By analyzing the gravitational lensing effect on galaxy rotation, researchers can infer the amount of dark matter required to explain observed distortions.
Researchers use advanced simulation to model large mass ratio black hole merger, predicting characteristics of ultimate merged black hole and its speed. The simulation's success could help plan future gravitational wave detectors and answer mysteries about black holes.
A RUDN University physicist created a software solution to identify the instability regions of black holes, ensuring their mathematical models are physically viable. The approach uses Einstein's equation with added corrections and identifies critical coupling constants that affect model stability.
The proportion of caesarean section deliveries carried out under general anaesthesia approximately halved from 7.7% to 3.7% during the first wave of COVID-19, even among women with COVID-19. Regional anaesthesia rates remained high and lower conversion rates were found.
Astronomers detect tiny free-floating planet with timescale of just 42 minutes, shedding light on turbulent past of young planetary systems. The discovery demonstrates that low-mass free-floating planets can be detected and characterized using ground-based telescopes.
A team of scientists has created the most detailed family portrait of black holes to date, analyzing gravitational-wave data from LIGO and Virgo detectors. The study reveals new clues about black hole formation and tests Einstein's theory of general relativity, passing all tests with flying colors.
A new time dilation phenomenon, known as quantum time dilation, has been predicted by researchers combining quantum mechanics and Einstein's theory of relativity. This effect can impact high-precision atomic clocks, leading to corrections in their accuracy.
Researchers found the upper limit for the speed of sound to be around 36 km per second, which is faster than previously thought. This discovery has implications for various scientific fields, including materials science and condensed matter physics.
Researchers have successfully connected two optical atomic clocks in Italy and Japan, separated by 8700 km, using radio telescopes observing distant stars. This achievement could provide a global infrastructure for high-precision timekeeping and unlock new possibilities for studying fundamental physics and general relativity.
Scientists have successfully measured the iron lines in the solar spectrum using a laser frequency comb and HARPS instrument, verifying one of Einstein's predictions - the gravitational redshift effect. This confirms that General Relativity theory is correct and has significant implications for satellite navigation systems like GPS.
Researchers investigated exposure to general anesthesia versus regional anesthesia in elective surgery and found no long-term link to dementia. The Journal of the American Geriatrics Society study followed 7,499 individuals aged 66+ for up to 5 years.
A RUDN University physicist simplified the Einstein-Lovelock theory for black holes by presenting its geometry in a compact form with a limited number of terms, sufficient to describe observed values. This simplification could aid in studying black holes in theories with quantum corrections.
Researchers from the Event Horizon Telescope collaboration used the first horizon-scale image of a black hole to test general relativity, deepening understanding of black holes and ruling out many alternatives. The study found that the size of the black hole shadow corroborates the predictions of general relativity.
Researchers used black hole images to test Einstein's general relativity, identifying modifications that cannot be significantly different from the theory. The new analysis provides a tighter gauge for testing gravity theories, constraining deviations from general relativity even further.
The universe's homogeneity is explained by Einstein's gravity theory, which shows that cosmological gravitational waves decay over time. This finding suggests that Einstein's theory can fully explain the universe's state without the need for inflation.
A young University of Queensland undergraduate student has developed a mathematical model that suggests paradox-free time travel is theoretically possible. The research reconciles traditional dynamics and Einstein's Theory of Relativity, potentially resolving long-standing puzzles in physics.
Researchers have discovered a memory effect that dramatically alters the Doppler wave signature in scattered waves. This effect, which appears in both relativistic and classical regimes, is influenced by memories of prior wave interactions, resulting in asymmetric peaks in the scattered spectrum.
Astrophysicists identify distinctive signatures of stellar-mass black holes in archival X-ray data, separating them from neutron stars. This is the strongest steady signature of stellar-mass black holes to date.
A recent study published in Diabetologia reveals that people with type 1 diabetes have a 33% higher risk of falls compared to the general population, while those with type 2 diabetes face a 19% increased risk. The research also identifies various risk factors for falls and fractures in individuals with diabetes.
Rochester Institute of Technology scientists played a key role in detecting the most massive gravitational wave binary observed to date, GW190521. The event revealed an intermediate-mass black hole with masses of about 85 and 66 solar masses.