scispace - formally typeset
Search or ask a question

OHe can form in Neutral stars or white dwarfs? 


Best insight from top research papers

OHe, composed of lepton-like doubly charged particles bound with primordial helium nuclei, can form in neutral stars or white dwarfs. The OHe hypothesis suggests that OHe dark atoms, with charged particles O$^{--}$ bound to helium nuclei, could constitute a significant portion of dark matter. These OHe atoms interact with nuclei through Coulomb and nuclear forces, potentially forming bound states with various nuclei, leading to keV binding energies. The stabilization of these bound states is crucial and likely involves the presence of a barrier in the OHe-nucleus potential . Additionally, the interaction of OHe with nuclei can result in the formation of O-beryllium ions, posing challenges due to the potential overabundance of anomalous isotopes in terrestrial matter .

Answers from top 5 papers

More filters
Papers (5)Insight
Not addressed in the paper.
Open access
24 Nov 2012
15 Citations
Not addressed in the paper.
Not addressed in the paper.
Not addressed in the paper.
Open access
16 Nov 2011
4 Citations
Not addressed in the paper.

Related Questions

What is the definition of a neutral market portfolio in the stock market?5 answersA neutral market portfolio in the stock market refers to a collection of financial assets designed to exhibit performance independent of the overall market represented by a benchmark index. This type of portfolio aims to neutralize exposure to market fluctuations, providing a hedge against systematic risk. Strategies for constructing such portfolios include minimizing the correlation between the portfolio return and the index return. Techniques like identifying persistently correlated sets of stocks and utilizing fractal optimization models can contribute to the creation of market-neutral portfolios, enhancing diversification and reducing volatility. By incorporating these methodologies, investors can potentially achieve more stable returns with reduced sensitivity to market movements, thus mitigating overall market risk in their investment portfolios.
Who have to have innitiative in the formation of SME?5 answersThe formation of Small and Medium Enterprises (SMEs) involves various stakeholders and initiatives. Universities play a crucial role in facilitating the creation of SMEs by transforming ideas into real companies through specialized courses like international Market Driven Engineering (iMDE). Additionally, the state has a significant role in providing an enabling business environment that supports SMEs by addressing market and institutional failures, promoting innovation, and building institutional capacity. Moreover, companies themselves are increasingly integrating employee knowledge into innovation strategies to enhance performance, emphasizing active participation and autonomy of employees in the innovation process. Ultimately, a collaborative effort involving universities, governments, and companies is essential in driving the formation and growth of SMEs.
How are nebulae created?5 answersNebulae are formed through various mechanisms. Planetary nebulae (PN) originate from the outer atmospheres of red giants, where a sudden envelope ejection occurs due to instabilities, leading to the creation of the nebula's shell morphology. In contrast, the growth of condensations in pressure-free cosmological models involves perturbations in the cosmic medium's density, requiring larger perturbations than expected from statistical theory, potentially favoring models with longer time-scales like the disturbed Einstein model. Additionally, Nebula, a decentralized platform based on blockchain, facilitates the sharing of computing resources securely through smart contracts and a Proof of Authority consensus algorithm, enhancing efficiency and security in computation trading markets.
How was created the oxigen-helium OHe? with oxigen and helium atom?5 answersThe creation of oxygen-helium (OHe) species involves various methods outlined in the provided research contexts. One approach involves generating high-speed atomic oxygen flows by mixing helium with pure oxygen in a laser-driven plasma wind tunnel, resulting in increased flow velocities. Another method utilizes a pulsed discharge-type metastable helium source to produce fast helium atoms, which interact with surfaces like H2O/Na(K)/Ni(110) with varying desorption yields. Additionally, a study focused on helium nanodroplets doped with a single oxygen atom using a DFT approach to investigate the O-He interaction potentials and electronic emission spectra, providing insights into chemical processes within helium nanodroplets. These diverse methods shed light on the creation and behavior of OHe species involving oxygen and helium atoms.
Ism study using hst data of white dwarfs5 answersWhite dwarfs have been studied using Hubble Space Telescope (HST) data for various purposes. One study focused on the temperature measurements of a double white dwarf binary system, CSS 41177, using HST+COS far-ultraviolet data. Another study investigated the metal abundances in the atmospheres of hot white dwarfs, specifically He-rich white dwarfs resulting from a late He-shell flash. This study used non-local thermodynamic equilibrium model atmosphere analysis of ultraviolet spectra taken with the HST's Cosmic Origins Spectrograph. Additionally, a search for luminous white dwarfs in nearby Galactic globular clusters was conducted using deep and homogeneous photometric catalog data taken with the HST's ACS/WFC. Finally, an ultraviolet spectrum and light curve of the cataclysmic variable EZ Lyn were obtained using the HST's Cosmic Origins Spectrograph, providing insights into its behavior after a dwarf nova outburst.
What is Neutral about Neutrality?5 answersNeutrality is a concept that is contested and has different interpretations in various fields. In politics, neutrality is seen as a foolish and superficial pursuit that undermines the essence of politics itself. In psychoanalysis, the concept of neutrality has evolved, with analysts recognizing the importance of their own subjectivities and the patient's external reality, making the idea of a completely neutral analyst outdated. In the realm of discourse and deliberation, the ideal of neutrality is challenged, as speech is inherently perspectival and cannot be completely neutral. In the context of the Rule of Law, neutrality is seen as a morally worthy purpose rather than a morally neutral concept, as it serves a specific moral good and incorporates moral values in its enforcement. Overall, the notion of neutrality is complex and its meaning varies depending on the field of study or context in which it is discussed.

See what other people are reading

How is the wave nature of matter used?
5 answers
The wave nature of matter is utilized in various ways across different contexts. In the realm of quantum physics, matter-wave interferometry has been a significant challenge for delicate molecules like polypeptides. Additionally, the concept of wave dark matter introduces the idea of classical waves for bosonic dark matter candidates, leading to unique phenomena like density fluctuations and soliton condensation. Furthermore, the wave nature of light plays a crucial role in explaining energy conservation in light-matter interactions, where the power of light and its period determine the energy exchanged with matter. These diverse applications showcase how understanding and harnessing the wave nature of matter and light can lead to groundbreaking insights and advancements in various fields of physics.
How negative energy solution arises in klein gordon equation. mathematics is also needed?
5 answers
Negative energy solutions in the Klein-Gordon equation arise due to the interpretation of antiparticles with negative energy in a 3-D quantized space model, contrasting the positive energy particles in our universe. The Klein paradox, where particles can cross barriers without reflection, involves acausal transmission mechanisms and divergent reflections, especially notable in supercritical rectangular barriers. To address the issue of negative probability density in solutions, a new energy-momentum operator is proposed for the Klein-Gordon equation, eliminating such problematic solutions by redefining the momentum operator through the sum of mechanical and electromagnetic momenta for charged particles in an electromagnetic field. These insights shed light on the intriguing phenomena and mathematical intricacies surrounding negative energy solutions in the Klein-Gordon equation.
How effective are cosmic ray detectors in identifying the presence of dark matter?
5 answers
Cosmic ray detectors have shown exceptional effectiveness in identifying dark matter through various methods. Recent advancements have enabled high angular resolution detectors to study cosmic-ray flux from dark matter decay in dwarf spheroidal galaxies, enhancing signal flux significantly with reduced theoretical uncertainties. Additionally, detectors have been proposed to detect light dark matter particles like axions and dark photons through magnetic excitation in specific materials, offering sensitivity to higher frequencies with minimal magnetic field requirements. Furthermore, detectors have been crucial in probing the parameter space for GeV-scale strongly interacting dark matter, considering interactions with cosmic rays and effects in the Earth's crust. Antideuteron detection experiments have also emerged as a promising channel for indirect detection of dark matter, particularly targeting hidden sector thermal relic candidates like vector portal dark matter.
What does the evolution of the combined total of the neutral gas, molecular gas and stars imply?
5 answers
The evolution of the combined total of neutral gas, molecular gas, and stars suggests significant insights into galaxy formation and cosmic history. Observations indicate that galaxies acquire cold gas predominantly through accretion at high redshifts, with molecular gas playing a crucial role. The evolution of the molecular gas fraction in galaxies has shown strong changes since z ~ 2, reflecting the depletion/replenishment of molecular fuel. Additionally, the mass of neutral gas in the Universe, particularly in high-redshift damped Lyα systems, has implications for star formation history and the total visible mass in galaxies. These findings highlight the complex interplay between gas reservoirs and stellar components, shedding light on the processes driving galactic mass assembly over cosmic time.
Why does first love is more powerful in everone's life?
10 answers
The phenomenon of first love holds a unique and powerful place in an individual's life, often remembered with a vividness that outlasts other relationships. This can be attributed to several factors explored across various contexts. Nancy Kulish emphasizes that first loves during adolescence are not merely reducible to preoedipal or oedipal meanings but are significant experiences that reverberate into adulthood, suggesting a deep psychological impact that shapes future emotional and relational landscapes. This idea is complemented by the abstract notion that love, while not unique, becomes singular and irreplaceable when associated with the first lover, highlighting the unmatched emotional depth and demand the first love experience commands in one's heart. The intensity and novelty of first love experiences contribute to their lasting impact. Adolescent processes, including first loves, are marked by intense affects that individuals resist re-experiencing in treatment due to their profound emotional depth. This resistance underscores the powerful, often overwhelming nature of first love, which can set a benchmark for emotional engagement in future relationships. Moreover, the exploration of various scientific and medical research contexts, though not directly related to the psychology of first love, underscores the complexity of human experiences and the multifaceted nature of our responses to them. From the intricate mechanisms underlying diabetic kidney diseaseto the cardiovascular implications of endothelial loss, each piece of research reflects the broader theme of how initial conditions or experiences can have long-lasting effects, analogous to the indelible mark left by first love. In essence, first love is powerful in everyone's life because it is a confluence of intense emotion, novelty, and psychological development during adolescence. It serves as a foundational experience that shapes individuals' expectations and perceptions of love, intimacy, and relationships moving forward.
What is basic radiation?
5 answers
Basic radiation refers to the fundamental aspects of radiation physics, radiobiology, and clinical radiation oncology. It encompasses understanding electromagnetic radiation, atomic models, radioactivity, production of radiopharmaceuticals, interaction of radiation with matter, and radiation detection devices. Additionally, basic radiation includes concepts like nuclear stability, modes of radioactive decay, interactions of radiation with matter, and counting statistics relevant to nuclear medicine. The study of basic radiation is crucial in various fields such as nuclear medicine, where knowledge of radiation physics is essential for practices like positron emission tomography (PET) imaging. Understanding basic radiation principles is vital for ensuring safety, accuracy, and efficacy in medical procedures involving ionizing radiation.
Why the region around N=50 is of special interest?
5 answers
The region around N=50 is of special interest due to significant phenomena observed in nuclei with Z<40 and 36<N<50, showing changes in deformation and coexistence of different shapes. Experimental studies have revealed intriguing behaviors like $\beta$-delayed neutron emission probability staggering in Ga isotopes, hinting at unique mechanisms similar to other isotopic chains. Moreover, investigations on Ge isotopes beyond the N=50 magic number have provided insights into their excited states and structural characteristics, shedding light on the coupling between single neutrons and the nucleus. These findings highlight the complexity and richness of nuclear structure in this region, prompting extensive theoretical interpretations and modeling efforts to understand the observed phenomena.
What is Reaction rate?
5 answers
Reaction rate refers to the speed at which a chemical reaction takes place, typically measured as the change in concentration of reactants or products over time. In a homogeneous closed reactor, the reaction rate is defined as (dξ/dt)/V, where ξ is the extent of reaction and V is the reactor volume. This rate is distinct from the rates of reactant consumption or product formation, which are experimentally measured quantities. The concept of reaction rate is crucial in understanding the kinetics of chemical reactions and plays a significant role in reaction engineering. Additionally, in the context of nucleosynthesis, nuclear reaction rates are fundamental in determining the production of different nuclei under varying stellar temperatures, showcasing a transition in distribution patterns with temperature changes.
What experimental evidence suggest light is a particle?
5 answers
Experimental evidence suggesting that light behaves as a particle includes the photoelectric effect, Compton effects, and anticorrelation experiments. These experiments showcase behaviors that have been traditionally associated with particles. However, it is argued that these phenomena can be explained solely by the properties of wave functions or state vectors, indicating no direct evidence for particles. The wave-particle duality of light has been a longstanding debate, with historical figures like Newton and Young proposing conflicting particle and wave theories. Recent experiments, such as those by Grangier, Roger, and Aspect, have provided insights into the complementary nature of light, where it can exhibit both wave-like and particle-like properties depending on the experimental setup.
Can weak lensing observations provide insights into the distribution and dynamics of dark matter within dwarf galaxies?
5 answers
Weak lensing observations can offer valuable insights into the distribution and dynamics of dark matter within dwarf galaxies. By leveraging simulation-based inference and machine learning techniques, it is possible to infer dark matter density profiles from observable kinematics of stars in these systems. This innovative approach addresses limitations of traditional methods like dynamical Jeans modeling, allowing for stronger constraints on dark matter profiles. Such advancements have the potential to shed light on unresolved issues concerning the small-scale structure of dark matter halos, such as the core-cusp discrepancy. Therefore, weak lensing observations present a promising avenue for probing the properties of dark matter within dwarf galaxies and understanding the intricate interplay between dark matter interactions and the evolution of cosmic structures.
Can dark matter interact with regular matter through forces?
5 answers
Yes, dark matter can interact with regular matter through various forces. Studies have explored interactions between dark matter and electrons or protons, leaving imprints on the cosmic microwave background and matter power spectrum. Additionally, investigations using X-ray data from galaxy clusters have probed whether self-interacting dark matter could provide insights into cosmological mysteries. Constraints on the spin-independent interaction cross section of dark matter with regular matter have been refined, considering scenarios like dark matter-cosmic ray interactions and Earth capture, leading to significant constraints on strongly interacting dark matter particles. Furthermore, hypotheses suggest the possibility of a feeble repulsive interaction between ordinary matter and dark matter, potentially affecting direct detection experiments and trapping of dark matter within astronomical bodies.