Connect with us

NEWATLAS

Astronomers discover dying echoes of a supermassive black hole

Published

on

Japanese astronomers have discovered the echoes of a “dying” supermassive black hole. While the object is quiet now, the team spotted the signatures of two huge radio jets that indicate it only recently fell silent after a bright, active phase.

It’s thought that supermassive black holes lurk at the center of most galaxies. Some of them are more outgoing than others – the one at the heart of our own Milky Way, for instance, is pretty calm. But others work overtime, throwing off huge amounts of light and radiation as they chow down on matter. These are known as active galactic nuclei (AGN), or quasars if they’re particularly bright.

The galaxy Arp 187 looks fairly quiet nowadays, but apparently that wasn’t always the case. In fact, rather recently it seems to have been an AGN, according to researchers at Tohoku University.

The team observed Arp 187 with two radio telescopes, ALMA and the Very Large Array (VLA), and found a strange sight that didn’t belong – two huge lobes of radio emissions. They resemble those thrown out by AGN, but unlike a garden variety AGN the black hole at the center was silent.

The radio lobes of the galaxy Arp 187 are clear in this composite radio image from ALMA and VLA data. The now-silent black hole lies in the center
The radio lobes of the galaxy Arp 187 are clear in this composite radio image from ALMA and VLA data. The now-silent black hole lies in the center

ALMA (ESO/NAOJ/NRAO), Ichikawa et al.

Next the team looked closer at data that captured multiple wavelengths of radiation, including radio, mid-infrared and X-rays. That confirmed that all the usual small-scale signs of AGN activity had ceased, but the large-scale ones, the lobes, were still visible. That suggests the activity had shut down sometime in the last few thousand years – very recently, in cosmic terms.

That time delay is because the lobes themselves span about 3,000 light-years from end to end, meaning that it would take that long for them to fade away entirely after the source stops.

A diagram comparing a normal active galactic nucleus (AGN) (left) with the anomalous Arp 187 (right), which seems to be dying
A diagram comparing a normal active galactic nucleus (AGN) (left) with the anomalous Arp 187 (right), which seems to be dying

Ichikawa et al.

“We used the NASA NuSTAR X-ray satellite, the best tool to observe current AGN activity,” says Kohei Ichikawa, lead reseacher on the study. “It enables non-detection, so we were able to discover that the nucleus is completely dead.”

The study can help astronomers better understand the life and death cycles of these AGN, and the timeframes that these transitions occur on. Previous research has seen calm galaxies suddenly fire up into raging quasars far quicker than thought possible. And even the Milky Way seems to have gone through these extremely active phases during its lifespan.

The research was originally published in the Astrophysical Journal, and recently presented at the 238th Meeting of the American Astronomical Society.

Source: Tohoku University

Coinsmart. Beste Bitcoin-Börse in Europa
Source: https://newatlas.com/space/active-galaxy-suprmassive-black-hole-quiet/

NEWATLAS

2021 Monterey Auction Preview: The $5-million-plus cars

Published

on

This 1998 Mercedes-Benz AMG CLK GTR Strassenversion will go to auction during Monterey Car Week with Gooding & Co (Lot 50) on Saturday, 14 August 2021 with an official estimate of $8,500,000 - $10,000,000

When we first started keeping our listings of the most valuable cars and motorcycles sold at auction, a $3 million sale would land a spot in the top 100 most valuable cars ever sold at auction. Nowadays, a $5-million sale won’t get you into the top 100, but it still puts you into the top 150 most valuable cars of all time, so that’s where we’ve drawn the line in our preview of the coming Monterey Car Week Auction cluster.

Continue Reading

Category: Automotive, Transport

Tags: Ferrari, Bonhams, RM-Sothebys, Gooding & Co, Mecum, Jaguar, Aston Martin

PlatoAi. Web3 Reimagined. Data Intelligence Amplified.
Click here to access.

Source: https://newatlas.com/automotive/2021-monterey-auction-preview-5-million-dollar-cars/

Continue Reading

NEWATLAS

Joby sets new record with 154.6-mile eVTOL flight

Published

on

Joby's eVTOL, like others in the class, burns a lot of battery power in hover mode, and can only realize its impressive range figures once in horizontal flight supported by wings

Joby has flown a new record distance for a full-sized eVTOL aircraft on a single battery charge, covering 154.6 miles (249 km) in a single 77-minute flight, complete with energy-gobbling vertical takeoff and landing phases.

Continue Reading

Category: Aircraft, Transport

Tags: Joby Aviation, Air Taxis, Electric Aircraft, eVTOL

PlatoAi. Web3 Reimagined. Data Intelligence Amplified.
Click here to access.

Source: https://newatlas.com/aircraft/joby-record-evtol-distance/

Continue Reading

NEWATLAS

Volocopter performs its first crewed public eVTOL flight in the US

Published

on

The Voloctoper takes to the skies at EAA AirVenture Oshkosh 2021

As it aggressively pursues a future where flying taxis carry people and cargo between busy urban centers, German aviation startup Volocopter has ticked off an important milestone. At the Oshkosh air show in Wisconsin on Tuesday, the company sent its all-electric Volocopter 2X into the sky for a four-minute flight, successfully completing its first public crewed test flight of an eVTOL in the US.

Continue Reading

Category: Aircraft, Transport

Tags: Volocopter, eVTOL, Electric Aircraft

PlatoAi. Web3 Reimagined. Data Intelligence Amplified.
Click here to access.

Source: https://newatlas.com/aircraft/volocopter-first-crewed-public-evtol-flight-us-eaa-oshkosh/

Continue Reading

NEWATLAS

New CAR-NK cell immunotherapy safely tackles breast cancers in lab tests

Published

on

Immunotherapy is a promising avenue for cancer treatment, but it has trouble against solid tumors without triggering major side effects. Now, researchers at McMaster University have developed a new form of the treatment that supercharges a different type of immune cell.

The human immune system is our most effective defense against disease, but it’s not infallible. Cancer is particularly crafty, using a range of tricks to avoid detection and fight off immune cells that come knocking.

Immunotherapy aims to swing the odds back in our favor. The most common form of the treatment is called chimeric antigen receptor T-cell (CAR T cell) therapy, where doctors extract T cells from the patient, engineer them to target cancer proteins, then return them to the body. Once there, they can launch a more effective attack.

So far, the technique has worked well on some forms of leukemia, but not so great against solid tumors. That’s because those cancers produce a strong environment around themselves that exhausts T cells quickly, or make it difficult for them to target the cancer. Other times the souped-up T cells can proliferate out of control, leading to a potentially fatal immune condition called a cytokine storm.

So for the new study, the McMaster scientists investigated alternatives to CAR T cell therapy. Rather than removing and editing T cells, they used a different type of immune cell called natural killer (NK) cells, which the team says should be more selective in targeting only cancer.

“These CAR-NK cells are a little bit smarter, in a way, in that they only kill the enemy cells and not good cells that happen to have the same marker,” says Ali Ashkar, corresponding author of the study. “These cells have a sober second thought that says, ‘I recognize this target, but is this target part of a healthy cell or a cancer cell?’ They are able to leave the healthy cells alone and kill the cancer cells.”

To test it out, the researchers took NK cells from patients with breast cancer, engineered them to target receptors found on cancer cells, and introduced them to tumor cells derived from the patients. They found that CAR-NK cells were able to kill more cancer cells than CAR T cells tested in the same way, even in the presence of the suppressive environment that solid tumors build around themselves.

But perhaps most importantly, the CAR-NK cells did not kill healthy cells in the samples – even those that expressed the same protein that the therapy was targeting on the cancer cells. Altogether, the study could open up new therapy options for hard-to-treat solid cancers.

“We want to be able to attack these malignancies that have been so resistant to other treatments,” says Ana Portillo, lead author of the study. “The efficacy we see with CAR-NK cells in the laboratory is very promising and seeing that this technology is feasible is very important. Now, we have much better and safer options for solid tumors.”

Of course, it is very early days for this work – so far it’s only been tested in the lab – and animal tests will need to be conducted before we even think about humans.

The research was published in the journal iScience.

Source: McMaster University

PlatoAi. Web3 Reimagined. Data Intelligence Amplified.

Click here to access.

Source: https://newatlas.com/medical/car-nk-cell-cancer-immunotherapy/

Continue Reading
Ecommerce5 days ago

How professional videos can help e-commerce brands attract more customers

Blockchain3 days ago

Everything you should know about Coinbase

Blockchain1 day ago

CryptoHawk Provides Subscribers 2-month Returns of 44.5% on BTC and 22.1% on ETH

Cyber Security1 day ago

What is a Remote Access Code?

Gaming4 days ago

SCCG Management and Data Sports Group Partner to Deliver Sports Content and Analytics to the Media Industry

image001.gif
Startups2 days ago

From Red Gold to Olympic Gold: Seedo Corp. Seeks Solutions for Athletes and More

Gaming3 days ago

How to win the war on betting

Cleantech2 days ago

Why food production is as dangerous for the planet as fossil fuels

Blockchain2 days ago

GBA Names New United Kingdom Chapter President

Cleantech2 days ago

To sell EVs, are automakers ready to ditch dealerships?

Blockchain2 days ago

Had Enough of Crypto? Here are Some Alternatives!

AR/VR1 day ago

nDreams Appoints ex Codemasters CEO as Non-Executive Chair of the Board

Gaming3 days ago

How to master poker

AR/VR1 day ago

Ven VR Adventure Arrives on Oculus Quest Next Week

Energy6 hours ago

TEM Program Scheduled for HMN Li Project

Cleantech2 days ago

You’ve set a bold climate goal, so now what?

Cleantech2 days ago

Green bonds are beating all expectations in the post-pandemic recovery

Blockchain1 day ago

From Around the Web: 10 Awesome Stories About Bitcoin

Blockchain2 days ago

Unique Network Chosen As Exclusive Blockchain Partner for United Nations Associated NFT Climate Initiative

Cyber Security3 days ago

What is Service Desk?

Trending