PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

Eventually everything will evaporate, not only black holes

2023-06-02
(Press-News.org) New theoretical research by Michael Wondrak, Walter van Suijlekom and Heino Falcke of Radboud University has shown that Stephen Hawking was right about black holes, although not completely. Due to Hawking radiation, black holes will eventually evaporate, but the event horizon is not as crucial as had been believed. Gravity and the curvature of spacetime cause this radiation too. This means that all large objects in the universe, like the remnants of stars, will eventually evaporate.

Using a clever combination of quantum physics and Einstein’s theory of gravity, Stephen Hawking argued that the spontaneous creation and annihilation of pairs of particles must occur near the event horizon (the point beyond which there is no escape from the gravitational force of a black hole). A particle and its anti-particle are created very briefly from the quantum field, after which they immediately annihilate. But sometimes a particle falls into the black hole, and then the other particle can escape: Hawking radiation. According to Hawking, this would eventually result in the evaporation of black holes.

Spiral In this new study the researchers at Radboud University revisited this process and investigated whether or not the presence of an event horizon is indeed crucial. They combined techniques from physics, astronomy and mathematics to examine what happens if such pairs of particles are created in the surroundings of black holes. The study showed that new particles can also be created far beyond this horizon. Michael Wondrak: ‘We demonstrate that, in addition to the well-known Hawking radiation, there is also a new form of radiation.’

Everything evaporates Van Suijlekom: ‘We show that far beyond a black hole the curvature of spacetime plays a big role in creating radiation. The particles are already separated there by the tidal forces of the gravitational field.’ Whereas it was previously thought that no radiation was possible without the event horizon, this study shows that this horizon is not necessary.

Falcke: ‘That means that objects without an event horizon, such as the remnants of dead stars and other large objects in the universe, also have this sort of radiation. And, after a very long period, that would lead to everything in the universe eventually evaporating, just like black holes. This changes not only our understanding of Hawking radiation but also our view of the universe and its future.’

The study was published on 2 June in the leading journal “Physical Review Letters” of the American Physical Society (APS).  Michael Wondrak is excellence fellow at Radboud University and an expert in quantum field theory. Walter van Suijlekom is a Professor of Mathematics at Radboud University and works on the mathematical formulation of physics problems. Heino Falcke is an award-winning Professor of Radio Astronomy and Astroparticle Physics at Radboud University and known for his work on predicting and making the first picture of a black hole.

END


ELSE PRESS RELEASES FROM THIS DATE:

Underwater forest's recovery offers hope for marine restoration across the globe

2023-06-02
Human activity has degraded ecosystems and damaged biodiversity around the world, but ecosystem restoration offers hope for the future. Scientists studying the restoration of underwater seaweed forests which provide other species with food and shelter have found that 10 years of restoration efforts have helped a damaged forest regrow to richness and strength comparable to forests that have never been disturbed. “Macroalgal forests are found along over one-third of the world’s coastlines and underpin ...

Developing technologies to reduce the cost of green hydrogen production

Developing technologies to reduce the cost of green hydrogen production
2023-06-02
Green hydrogen, which produces hydrogen without the use of fossil fuels or the emission of carbon dioxide, has become increasingly important in recent years as part of efforts to realize a decarbonized economy. However, due to the high production cost of water electrolysis devices that produce green hydrogen, the economic feasibility of green hydrogen has not been very high. However, the development of a technology that drastically reduces the amount of rare metals such as iridium and platinum used in polymer electrolyte membrane water electrolysis devices is opening the way to lower production costs. A research team led by Dr. Hyun S. Park and Sung Jong ...

ASCO 2023 - Sylvester Comprehensive Cancer Center experts available for interviews

2023-06-02
Sarcomas Dr. Jonathan C. Trent, a medical oncologist specializing in Sarcoma and Connective Tissue Medical Oncology at Sylvester, is available to discuss a wide range of issues related to Sarcoma research and experimental therapeutics. He and collaborators are involved in multiple ASCO23 presentations, including: Multi-omic characterization of gastrointestinal stromal tumor (GIST) in a large real-world patient cohort. Outcomes in patients with advanced gastrointestinal stromal tumor who did not have ...

Alcohol dependency in adolescence, but not consumption, linked with later depression risk

2023-06-02
Adolescents who show signs of alcohol dependence are more likely to develop depression by their mid-20s, according to a new study led by UCL (University College London) and University of Bristol researchers. Drinking large amounts of alcohol regularly, but with no signs of dependency, did not predict depression risk, according to the findings published in The Lancet Psychiatry. Co-lead author Dr Gemma Lewis (UCL Psychiatry) said: “By using a large, longitudinal dataset, we have found evidence that problematic drinking patterns in late adolescence may increase the risk of developing ...

Why we need to fall out of love with flaky white fish - study

2023-06-02
The UK’s growing mismatch between the fish we catch and the fish we want to eat has clear implications for our future food security, according to new research.  Led by the University of Essex and the Centre for Environment Fisheries and Aquaculture Science (Cefas), the study, published in the international peer-reviewed journal Reviews in Fish Biology and Fisheries, for the first time offers a comprehensive, long-term analysis of how major policy changes in the past 120 years have influenced patterns in UK seafood production, trade and consumption.  It shows that even if we changed our fish-eating habits away from choosing flaky white fish such as cod ...

UK’s poorest children likelier to have less understanding of personal finances, study finds

2023-06-02
A new study of 3,745 families from across the UK demonstrates a “sizeable” gap in the financial knowledge of children depending on which socio-economic group they come from. The research highlights significant inequalities in young people’s financial capabilities, with the results pointing toward disadvantaged children not developing key financial skills. In findings published in the peer-reviewed British Journal of Educational Studies, an expert team from UCL are calling for a greater emphasis on developing financial skills amongst children starting at primary school, particularly aimed towards those from disadvantaged social backgrounds, with “a particular need ...

ASCO 23: Thyroid cancer precision approaches that incorporate targeted therapies and other treatments are changing the surgeon’s role

ASCO 23: Thyroid cancer precision approaches that incorporate targeted therapies and other treatments are changing the surgeon’s role
2023-06-02
DOWNLOADABLE B-ROLL/VIDEO   MIAMI, FLORIDA (June 1, 2023) – Historically, surgery was the first line of treatment for patients with thyroid cancer. Now, as targeted therapies and other new medications emerge, surgery for certain patients may become more of a secondary option if those treatments fail. This new context could potentially change how some procedures are conducted. Otolaryngologist and head and neck surgeon Dr. Zoukaa Sargi, will join a June 2 panel discussion on thyroid cancer care ...

Medical College of Wisconsin cancer researcher & key investigator on study of Pirtobrutinib, now FDA approved for patients previously treated for Mantle Cell Lymphoma

2023-06-02
In a multicenter phase 1 and 2 trial (BRUIN, NCT03740529), researchers from leading cancer centers across the globe, including the Medical College of Wisconsin (MCW) in Milwaukee, tested Bruton tyrosine kinase inhibitor (BTKi), pirtobrutinib, in patients with pre-treated mantle cell lymphoma (MCL). Results of the study, which assessed the efficacy of the drug in a cohort of 90 patients with poor survival prognosis, demonstrated the reversible BTKi drug to be both safe and effective in achieving inhibition of defective B-cells. The results were published by the Journal of Clinical Oncology on May 16.   MCL is an aggressive, rare subtype of ...

Researchers develop new detection tool for beech leaf disease’s nematode pest

Researchers develop new detection tool for beech leaf disease’s nematode pest
2023-06-02
Beech leaf disease is an emerging threat to North American forest ecosystems. It was first discovered in northeastern Ohio in 2012, and has already spread to 12 additional U.S. states and Canadian provinces. At first the cause of the disease was unknown, and the sick and dying trees were diagnosed on symptoms alone: Dark banding along the leaf veins and shriveled, leathery leaves. But in 2017, nematodes were found in diseased leaves, and by 2020 we had the answer: A newly recognized subspecies of the wormlike creature, Litylenchus crenatae mccannii, was definitely associated with the symptoms.  In order to monitor the spread of the disease, to understand the nemotode’s ...

St. Jude finds NLRP12 as a new drug target for infection, inflammation and hemolytic diseases

St. Jude finds NLRP12 as a new drug target for infection, inflammation and hemolytic diseases
2023-06-01
(MEMPHIS, Tenn. – June 01, 2023) Infections and other diseases can cause red blood cells to rupture, releasing the oxygen-binding molecule hemoglobin, which breaks down into heme. Free heme can cause significant inflammation and organ damage, leading to morbidity and mortality. Researchers from St. Jude Children’s Research Hospital discovered NLRP12, an innate immune pattern recognition receptor, to be the key molecule responsible for inducing inflammatory cell death and pathology in response to heme combined with other cellular damage or infection. The finding provides a new potential drug target to prevent morbidity in certain illnesses. ...

LAST 30 PRESS RELEASES:

Tens of thousands of heart attacks and strokes could be avoided each year if cholesterol-lowering drugs were used according to guidelines

Leading cancer and metabolic disease expert Michael Karin joins Sanford Burnham Prebys

Low-intensity brain stimulation may restore neuron health in Alzheimer's disease

Four-day school week may not be best for students, review finds

Using music to explore the dynamics of emotions

How the brain supports social processing as people age

Túngara frog tadpoles that grew up in the city developed faster but ended up being smaller

Where there’s fire, there’s smoke

UCLA researchers uncover key mechanism of brain repair in vascular dementia, revealing promising therapeutic target

Why Human empathy still matters in the age of AI

COVID-19 and cognitive change in a community-based cohort

Intent to test for COVID-19 in the postpandemic era

Landmark study investigates potential of Ambroxol, a cough medicine, to slow Parkinson’s-related dementia

Finding suggests treatment approach for autoimmune diseases

A new “link” to triple-negative breast cancer

Cool is cool wherever you are

Meteorological satellites observe temperatures on Venus

New hope for brain cancer: FAU awarded grants for glioblastoma treatment

AI for Good Global Summit 2025 - Exclusive press tour (ITU/United Nations)

Bacteria hijack tick cell defenses to spread disease

New study shows omega-6 does not increase inflammation

Firms raise the bar after missing the target: Strategic use of overestimated earnings targets

Pusan National University scientists uncover gene mutation tied to poor outcomes in transplant patients

How a common herpes virus outsmarts the immune system

Breakthrough resins speed up 3D printing with built-in material control

BCI robotic hand control reaches new finger-level milestone

Neurons burn sugar differently. The discovery could save the brain

AI matches doctors in mapping lung tumors for radiation therapy

A rare form of leprosy existed in the Americas for thousands of years

Researchers identify genetic bottlenecks that explain the emergence of cholera

[Press-News.org] Eventually everything will evaporate, not only black holes