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Stunning New Image Of Black Hole Reveals Surrounding Magnetic Fields – KCCU

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Two years after producing the first-ever image of a black hole, an international team of researchers has released an updated view of the magnetic fields surrounding it — a development they say brings them one step closer to understanding the M87 galaxy’s ability to “launch energetic jets from its core.”

The Event Horizon Telescope said in a release that more than 300 researchers collaborated on the project and their findings were published Wednesday in two separate papers in The Astrophysical Journal.

EHT scientists captivated the world in April 2019 when they released an image of the supermassive black hole at the center of galaxy Messier 87, which is located 55 million light-years away from Earth. The dramatic image shows a dark central region outlined by a bright ring-like structure, which scientists described at the time as “emission from hot gas swirling around it under the influence of strong gravity near its event horizon,” referring to the boundary marking the limits of the black hole. The new image captures that same view in polarized light, with brightly colored streaks of light corresponding with its magnetic field.

“We are now seeing the next crucial piece of evidence to understand how magnetic fields behave around black holes, and how activity in this very compact region of space can drive powerful jets that extend far beyond the galaxy,” said Monika Mościbrodzka, coordinator of the EHT Polarimetry Working Group and a professor at Radboud Universiteit in the Netherlands.

Bright jets of energy and matter emerge from M87’s core and extend at least 5,000 light-years from its center, according to EHT. Most of the matter lying close to the black hole’s edge falls in, but some of the surrounding particles manage to escape and get blasted far into space in the form of jets, a process that has long intrigued researchers.

Astronomers are still working to understand how jets larger than the galaxy itself are launched from the black hole within it. The newly released image of the black hole and its shadow in polarized light enables them to examine the activity-filled region just outside the black hole for the first time, researchers said.

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“This work is a major milestone: the polarisation of light carries information that allows us to better understand the physics behind the image we saw in April 2019, which was not possible before,” said Iván Martí-Vidal, coordinator of the EHT Polarimetry Working Group and researcher at Spain’s Universitat de València.

Just as polarized sunglasses can help people see better by reducing reflections and glare, researchers explained, “astronomers can sharpen their vision of the region around the black hole by looking at how the light originating from there is [polarized].” With this new information, they can map the lines of the magnetic fields at the inner edge of the black hole to better understand their structure.

With these new findings, the team is now homing in on the role of strongly magnetized gas, EHT said.

Jason Dexter, coordinator of the EHT Theory Working Group and a professor at the University of Colorado Boulder, said the new observations indicate that the magnetic fields at the edge of the black hole are strong enough to “push back on the hot gas and help it resist gravity’s pull.”

“Only the gas that slips through the field can spiral inwards to the event horizon,” Dexter said.

The first polarized image of a black hole is the product of eight telescopes linked together around the world to create the virtual Earth-sized telescope, and years of work involving “complex techniques” in obtaining and analyzing data, according to researchers. And, they say, it’s just the beginning.

Dominic Pesce, a researcher at the Center for Astrophysics in Cambridge, Mass., said future observations will enable researchers to study how the magnetic field structure changes over time. In the meantime, the EHT itself will continue to expand.

“Even now we are designing a next-generation EHT that will allow us to make the first black hole movies,” said Sheperd Doeleman, founding director of the EHT. “Stay tuned for true black hole cinema.”

Copyright 2021 NPR. To see more, visit https://www.npr.org.

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The body of a Ugandan Olympic athlete who was set on fire by her partner is received by family

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NAIROBI, Kenya (AP) — The body of Ugandan Olympic athlete Rebecca Cheptegei — who died after being set on fire by her partner in Kenya — was received Friday by family and anti-femicide crusaders, ahead of her burial a day later.

Cheptegei’s family met with dozens of activists Friday who had marched to the Moi Teaching and Referral Hospital’s morgue in the western city of Eldoret while chanting anti-femicide slogans.

She is the fourth female athlete to have been killed by her partner in Kenya in yet another case of gender-based violence in recent years.

Viola Cheptoo, the founder of Tirop Angels – an organization that was formed in honor of athlete Agnes Tirop, who was stabbed to death in 2021, said stakeholders need to ensure this is the last death of an athlete due to gender-based violence.

“We are here to say that enough is enough, we are tired of burying our sisters due to GBV,” she said.

It was a somber mood at the morgue as athletes and family members viewed Cheptegei’s body which sustained 80% of burns after she was doused with gasoline by her partner Dickson Ndiema. Ndiema sustained 30% burns on his body and later succumbed.

Ndiema and Cheptegei were said to have quarreled over a piece of land that the athlete bought in Kenya, according to a report filed by the local chief.

Cheptegei competed in the women’s marathon at the Paris Olympics less than a month before the attack. She finished in 44th place.

Cheptegei’s father, Joseph, said that the body will make a brief stop at their home in the Endebess area before proceeding to Bukwo in eastern Uganda for a night vigil and burial on Saturday.

“We are in the final part of giving my daughter the last respect,” a visibly distraught Joseph said.

He told reporters last week that Ndiema was stalking and threatening Cheptegei and the family had informed police.

Kenya’s high rates of violence against women have prompted marches by ordinary citizens in towns and cities this year.

Four in 10 women or an estimated 41% of dating or married Kenyan women have experienced physical or sexual violence perpetrated by their current or most recent partner, according to the Kenya Demographic and Health Survey 2022.

The Canadian Press. All rights reserved.

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The ancient jar smashed by a 4-year-old is back on display at an Israeli museum after repair

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TEL AVIV, Israel (AP) — A rare Bronze-Era jar accidentally smashed by a 4-year-old visiting a museum was back on display Wednesday after restoration experts were able to carefully piece the artifact back together.

Last month, a family from northern Israel was visiting the museum when their youngest son tipped over the jar, which smashed into pieces.

Alex Geller, the boy’s father, said his son — the youngest of three — is exceptionally curious, and that the moment he heard the crash, “please let that not be my child” was the first thought that raced through his head.

The jar has been on display at the Hecht Museum in Haifa for 35 years. It was one of the only containers of its size and from that period still complete when it was discovered.

The Bronze Age jar is one of many artifacts exhibited out in the open, part of the Hecht Museum’s vision of letting visitors explore history without glass barriers, said Inbal Rivlin, the director of the museum, which is associated with Haifa University in northern Israel.

It was likely used to hold wine or oil, and dates back to between 2200 and 1500 B.C.

Rivlin and the museum decided to turn the moment, which captured international attention, into a teaching moment, inviting the Geller family back for a special visit and hands-on activity to illustrate the restoration process.

Rivlin added that the incident provided a welcome distraction from the ongoing war in Gaza. “Well, he’s just a kid. So I think that somehow it touches the heart of the people in Israel and around the world,“ said Rivlin.

Roee Shafir, a restoration expert at the museum, said the repairs would be fairly simple, as the pieces were from a single, complete jar. Archaeologists often face the more daunting task of sifting through piles of shards from multiple objects and trying to piece them together.

Experts used 3D technology, hi-resolution videos, and special glue to painstakingly reconstruct the large jar.

Less than two weeks after it broke, the jar went back on display at the museum. The gluing process left small hairline cracks, and a few pieces are missing, but the jar’s impressive size remains.

The only noticeable difference in the exhibit was a new sign reading “please don’t touch.”

The Canadian Press. All rights reserved.

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B.C. sets up a panel on bear deaths, will review conservation officer training

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VICTORIA – The British Columbia government is partnering with a bear welfare group to reduce the number of bears being euthanized in the province.

Nicholas Scapillati, executive director of Grizzly Bear Foundation, said Monday that it comes after months-long discussions with the province on how to protect bears, with the goal to give the animals a “better and second chance at life in the wild.”

Scapillati said what’s exciting about the project is that the government is open to working with outside experts and the public.

“So, they’ll be working through Indigenous knowledge and scientific understanding, bringing in the latest techniques and training expertise from leading experts,” he said in an interview.

B.C. government data show conservation officers destroyed 603 black bears and 23 grizzly bears in 2023, while 154 black bears were killed by officers in the first six months of this year.

Scapillati said the group will publish a report with recommendations by next spring, while an independent oversight committee will be set up to review all bear encounters with conservation officers to provide advice to the government.

Environment Minister George Heyman said in a statement that they are looking for new ways to ensure conservation officers “have the trust of the communities they serve,” and the panel will make recommendations to enhance officer training and improve policies.

Lesley Fox, with the wildlife protection group The Fur-Bearers, said they’ve been calling for such a committee for decades.

“This move demonstrates the government is listening,” said Fox. “I suspect, because of the impending election, their listening skills are potentially a little sharper than they normally are.”

Fox said the partnership came from “a place of long frustration” as provincial conservation officers kill more than 500 black bears every year on average, and the public is “no longer tolerating this kind of approach.”

“I think that the conservation officer service and the B.C. government are aware they need to change, and certainly the public has been asking for it,” said Fox.

Fox said there’s a lot of optimism about the new partnership, but, as with any government, there will likely be a lot of red tape to get through.

“I think speed is going to be important, whether or not the committee has the ability to make change and make change relatively quickly without having to study an issue to death, ” said Fox.

This report by The Canadian Press was first published Sept. 9, 2024.

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