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

Astronomers discover heavy elements after bright gamma-ray burst from neutron star merger

Breakthrough discovery puts astronomers one step closer to solving the mystery of the origin of elements that are heavier than iron

Astronomers discover heavy elements after bright gamma-ray burst from neutron star merger
2024-02-29
(Press-News.org)

An international team of astronomers — including Clemson University astrophysicist Dieter Hartmann — obtained observational evidence for the creation of rare heavy elements in the aftermath of a cataclysmic explosion triggered by the merger of two neutron stars.

The massive explosion unleashed a gamma-ray burst, GRB230307A, the second brightest in 50 years of observations and about 1,000 times brighter than a typical gamma-ray burst. GRB230307A was first detected by NASA’s Fermi Gamma-Ray Space Telescope on March 7, 2023.

Using multiple space- and ground-based telescopes, including NASA’s James Webb Space Telescope, the largest and most powerful telescope ever launched into space, scientists were able to pinpoint the source of the gamma-ray burst in the sky and track how its brightness changed. 

With the information gathered, the researchers determined the burst was the result of two neutron stars that merged in a galaxy 1 billion light-years from Earth to form a kilonova. The researchers observed evidence of tellurium, one of the rarest elements on Earth. 

The breakthrough discovery puts astronomers one step closer to solving the mystery of the origin of elements that are heavier than iron.

“I’m a high energy astrophysicist. I like explosions. I like the gamma rays that come from them. But I’m also an astronomer who really cares about fundamental questions like how did heavy elements form,” Hartmann said.  

Gamma-ray bursts (GRBs) are bursts of gamma-ray light — the most energetic form of light — that last anywhere from seconds to minutes. The first GRBs were detected in the 1960s by satellites built to monitor nuclear testing. 

GRBs have different causes. 

Long duration GRBs are caused by supernovas, the point when a massive star reaches the end of its life and explodes into a burst of light. Short duration GRBs are caused by the merger of two neutron stars, known as a kilonova, or the merger of a neutron star and a black hole.

Although GRB230307A lasted for 200 seconds, scientists saw the afterglow color change from blue to red, a signature of kilonova. 

“The burst itself actually indicated a long duration event, and it should have been a normal supernova-type situation. But it had unusual features. It didn’t quite fit the patterns of long bursts,” Hartmann said. “It turns out that this radioactive cloud, that kilonova afterglow, which had all these nuclear synthetic fingerprints in it, is the signature of a binary merger. The excitement comes from using the Webb to identify a chemical fingerprint that we had expected for short bursts and seeing it inside a long burst.”

Hartmann said the Big Bang produced hydrogen and helium. All other elements were made by stars and processes in the interstellar medium.

“Some of them are massive enough to explode and they return that material to their gaseous environments which later make new stars. So, there’s a cycle in the universe that makes us more enriched in carbon, nitrogen, oxygen, all the things we need,” he said. “We call stars the cauldrons of the universe.”

Thermonuclear reactions, or fusion, make stars shine. That leads successively to the production of more heavy elements, Hartmann said. But when it gets to iron, there isn’t much energy left to squeeze out, he said.

So, where do all the heavy elements such as gold and uranium come from?

“The heavy elements have special origins. There are two processes that dominate. One is called rapid; the other is called slow. We believe the r-process happens in those neutron star mergers,” Hartmann said.

Theoretical modeling suggested kilonovas should produce tellurium, but the detection of a spectral line by the James Webb Space Telescope provided experimental evidence. A spectral line is a dark or bright line within a continuous spectrum. It is produced by transitions within atoms or ions.

“We think it’s a pretty secure identification, but it’s not beyond a reasonable doubt like they would say in court,” Hartmann said.

Detailed findings from the research can be found in the paper titled “Heavy element production in a compact object merger observed by JWST” that appeared in the scientific journal Nature.

In addition to Hartmann, researchers from several universities in the United States as well as scientists from the Netherlands, the United Kingdom, Italy, Japan, Denmark, Spain, Sweden, Australia, Ireland, France, New Zealand, Canada, Israel, Iceland, Czech Republic and Germany were involved.

 

END


[Attachments] See images for this press release:
Astronomers discover heavy elements after bright gamma-ray burst from neutron star merger Astronomers discover heavy elements after bright gamma-ray burst from neutron star merger 2 Astronomers discover heavy elements after bright gamma-ray burst from neutron star merger 3

ELSE PRESS RELEASES FROM THIS DATE:

USTC reveals molecular mechanism of transmembrane bilirubin transport by human ABCC2 transporter

USTC reveals molecular mechanism of transmembrane bilirubin transport by human ABCC2 transporter
2024-02-29
The metabolic process of bilirubin has been a focus in medical research since the abnormal accumulation of bilirubin has been found to be associated with a variety of diseases. Bilirubin is a substance produced by the breakdown of aging or damaged red blood cells, and its effective removal is essential for human health.  A research team led by Prof. CHEN Yuxing and Prof. ZHOU Congzhao from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences has revealed the three-dimensional structure and working mechanism of the human bilirubin transporter ABCC2. The study was published ...

USTC realizes durable CO2 conversion in proton-exchange membrane system

USTC realizes durable CO2 conversion in proton-exchange membrane system
2024-02-29
The metabolic process of bilirubin has been a focus in medical research since the abnormal accumulation of bilirubin has been found to be associated with a variety of diseases. Bilirubin is a substance produced by the breakdown of aging or damaged red blood cells, and its effective removal is essential for human health.  A research team led by Prof. CHEN Yuxing and Prof. ZHOU Congzhao from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences has revealed ...

A new plant’s name that tells a story

A new plant’s name that tells a story
2024-02-29
A new species and genus of fairy lantern, tiny glass-like white plants that feed on fungi, has been discovered in Japan. In the country renowned for its extensive flora research, the discovery of a new plant genus is extremely rare and has not occurred in almost 100 years. Fairy lanterns, or Thismiaceae as they are known to botany, are very unusual plants found mainly in tropical but also in subtropical and temperate regions. First of all, they are not green and do not engage in photosynthesis, but rather feed on fungal mycelia in the ground. As a consequence, they are often hidden under fallen leaves and only for a brief period produce above-ground flowers that look like glasswork. The ...

Noteworthy studies to be presented at the 2024 Multidisciplinary Head & Neck Cancers Symposium

2024-02-29
PHOENIX, February 29, 2024 — Research on patient-centered treatment of head and neck cancers will be presented at the 2024 Multidisciplinary Head and Neck Cancers Symposium, which takes place in Phoenix and online today through March 2. Media registration is available via our press kit, and general registration is available via the meeting website. Seven high-impact studies recommended by symposium leadership for media are noted below. All abstracts are available online. Experts are available to provide outside commentary and perspective on research at the meeting; ...

Turbocharging CRISPR to understand how the immune system fights cancer

2024-02-29
Over the past two decades, the immune system has attracted increasing attention for its role in fighting cancer. As researchers have learned more and more about the cancer-immune system interplay, several antitumor immunotherapies have become FDA-approved and are now regularly used to treat multiple cancer types. Yet despite these advances, much remains unknown about how the immune system fights cancer — and about immunity in general, said Martin LaFleur, a postdoctoral fellow in the laboratory of Arlene ...

UBC Okanagan researchers create new compound to build space-age antennas

UBC Okanagan researchers create new compound to build space-age antennas
2024-02-29
In a first-of-its-kind development, UBC Okanagan researchers, in collaboration with Drexel University, have created a new compound that can be used to 3D print telecommunication antennas and other connectivity devices. These 3D printed products, created by combining a two-dimensional compound called MXenes with a polymer, can be used as an alternative for metallic counterparts and can make a vast improvement in communication technology including elements such as antennas, waveguides and filters. Waveguides are everywhere, yet most people don’t know what they are, says Dr. Mohammad Zarifi, a researcher in UBC Okanagan’s Microelectronics and Gigahertz ...

Study detects cognitive changes in older drivers using in-vehicle sensors

Study detects cognitive changes in older drivers using in-vehicle sensors
2024-02-29
An estimated 4 to 8 million older adults with mild cognitive impairment are currently driving in the United States, and one-third of them will develop dementia within five years. Individuals with progressive dementias are eventually unable to drive safely, yet many remain unaware of their cognitive decline. Currently, screening and evaluation services for driving can only test a small number of individuals with cognitive concerns, missing many who need to know if they require treatment. Nursing, engineering and neuropsychology researchers at Florida Atlantic University are testing and evaluating a readily and rapidly available, unobtrusive in-vehicle sensing ...

Terasaki Institute for Biomedical Innovation announces 2024 Paul Terasaki Award recipient

Terasaki Institute for Biomedical Innovation announces 2024 Paul Terasaki Award recipient
2024-02-29
(LOS ANGELES) – February 29, 2024 - The Terasaki Institute for Biomedical Innovation (TIBI) is pleased to announce their selection of Professor Nicholas A. Peppas of The University of Texas at Austin as the recipient of the 2024 Paul Terasaki Distinguished Scientist Innovation Award. The award will be presented at TIBI’s 2nd annual Terasaki Innovation Summit, to be held March 27-29, 2024, at the UCLA Meyer & Renee Luskin Conference Center. The award was created in memory of Dr. Paul I. Terasaki, a pioneer in organ transplant research and innovation. It recognizes outstanding achievement in the field of biomedical ...

Terasaki Institute for Biomedical Innovation announces 2024 Hisako Terasaki Award recipients

Terasaki Institute for Biomedical Innovation announces 2024 Hisako Terasaki Award recipients
2024-02-29
(LOS ANGELES) – February 29, 2024 - The Terasaki Institute for Biomedical Innovation (TIBI) is pleased to announce their selections of Assistant Professors Amir Manbachi of Johns Hopkins University and Ritu Raman of the Massachusetts Institute of Technology (MIT) as the recipients of the 2024 Hisako Terasaki Young Innovator Awards. The awards will be presented at TIBI’s 2nd annual Terasaki Innovation Summit, to be held March 27-29, 2024, at the UCLA Meyer & Renee Luskin Conference Center. The award was created in memory of Hisako Terasaki, philanthropist, accomplished artist, and wife ...

Small dietary changes can cut your carbon footprint by 25%

2024-02-29
The latest Canada’s Food Guide presents a paradigm shift in nutrition advice, nixing traditional food groups, including meat and dairy, and stressing the importance of plant-based proteins. Yet, the full implications of replacing animal with plant protein foods in Canadians’ diets are unknown. New research at McGill University in collaboration with the London School of Hygiene & Tropical Medicine provides compelling evidence that partially substituting animal with plant protein foods can increase life expectancy and decrease greenhouse gas emissions. Importantly, ...

LAST 30 PRESS RELEASES:

Scientists target ‘molecular machine’ in the war against antimicrobial resistance

Extending classical CNOP method for deep-learning atmospheric and oceanic forecasting

Aston University research: Parents should encourage structure and independence around food to support children’s healthy eating

Thunderstorms are a major driver of tree death in tropical forests

Danforth Plant Science Center adds two new faculty members

Robotic eyes mimic human vision for superfast response to extreme lighting

Racial inequities and access to COVID-19 treatment

Residential segregation and lung cancer risk in African American adults

Scientists wipe out aggressive brain cancer tumors by targeting cellular ‘motors’

Capturability distinction analysis of continuous and pulsed guidance laws

CHEST expands Bridging Specialties Initiative to include NTM disease and bronchiectasis on World Bronchiectasis Day

Exposure to air pollution may cause heart damage

SwRI, UTSA selected by NASA to test electrolyzer technology aboard parabolic flight

Prebiotics might be a factor in preventing or treating issues caused by low brain GABA

Youngest in class at higher risk of mental health problems

American Heart Association announces new volunteer leaders for 2025-26

Gut microbiota analysis can help catch gestational diabetes

FAU’s Paulina DeVito awarded prestigious NSF Graduate Research Fellowship

Champions for change – Paid time off initiative just made clinical trials participation easier

Fentanyl detection through packaging

Prof. Eran Meshorer elected to EMBO for pioneering work in epigenetics

New 3D glacier visualizations provide insights into a hotter Earth

Creativity across disciplines

Consequences of low Antarctic sea ice

Hear here: How loudness and acoustic cues help us judge where a speaker is facing

A unique method of rare-earth recycling can strengthen the raw material independence of Europe and America

Epilepsy self-management program shows promise to control seizures, improve mood and quality of life

Fat may play an important role in brain metabolism

New study finds no lasting impact of pandemic pet ownership on human well-being

New insights on genetic damage of some chemotherapies could guide future treatments with less harmful side effects

[Press-News.org] Astronomers discover heavy elements after bright gamma-ray burst from neutron star merger
Breakthrough discovery puts astronomers one step closer to solving the mystery of the origin of elements that are heavier than iron