Spinning black holes may prefer to lean in sync

Black holes may be inclined to lean while merging, get kicked as a result. 

A simulation of a black hole merger.

Enlarge / A simulation of a black hole merger. (credit: LIGO/Caltech/MIT/Sonoma State (Aurore Simonnet))

I was pretty excited when LIGO, the giant double-eared gravitational wave observatory in the US, detected the first gravitational waves. When Virgo came online, triangulating gravitational wave signals became possible, and gravitational wave astronomy became a reality.

Once the initial excitement of seeing individual events died away, it was only a matter of time and statistics before scientists started pulling new insights out of the data. A pair of new papers has looked at black hole merger statistics, and the papers' results suggest that there might be something unusual in the distribution of black hole spins.

The revealing death spiral

Gravitational waves are the result of mass moving through space and time. The mass stretches space and time, causing a ripple effect, much like the bow wave from a boat moving through water. And, just like a bow wave, the heavier and faster the mass, the bigger the wave. Unlike water, space-time is very stiff, so it needs more than an ocean liner to create a noticeable gravitational wave.

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Hactivists say they hacked Belarus rail system to stop Russian military buildup

If confirmed, the attack would be one of the first times ransomware has been used this way.

Servicemen of Russia's Eastern Military District units attend a welcoming ceremony as they arrive in Belarus to take part in joint military exercises. Russia's military is combining its own means of transport with train travel.

Enlarge / Servicemen of Russia's Eastern Military District units attend a welcoming ceremony as they arrive in Belarus to take part in joint military exercises. Russia's military is combining its own means of transport with train travel. (credit: Getty Images)

Hacktivists in Belarus said on Monday they had infected the network of the country’s state-run railroad system with ransomware and would provide the decryption key only if Belarus President Alexander Lukashenko stopped aiding Russian troops ahead of a possible invasion of Ukraine.

Referring to the Belarus Railway, a group calling itself Cyber ​​Partisans wrote on Telegram:

BelZhD, at the command of the terrorist Lukashenko, these days allows the occupying troops to enter our land. As part of the "Peklo" cyber campaign, we encrypted the bulk of the servers, databases and workstations of the BelZhD in order to slow down and disrupt the operation of the road. The backups have been destroyed.

Dozens of databases have been cyberattacked, including AS-Sledd, AS-USOGDP, SAP, AC-Pred, pass.rw.by, uprava, IRC, etc.

⚠ Automation and security systems were deliberately NOT affected by a cyber attack in order to avoid emergency situations.

The group also announced the attack by Twitter.

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Latest Intel Arc GPU leaks: 3070 Ti-ish speeds, 5 different options for laptops

Intel’s stab at the dedicated GPU market still looks promising.

Promotional image for computer components.

Enlarge / Intel's upcoming Arc GPUs. (credit: Intel)

Intel hasn’t said much about its upcoming Arc dedicated GPUs since announcing their branding and a handful of architectural details a few months ago, but recent leaks have given us some indications of what we can expect when it comes to performance and to the GPUs that Intel is planning for laptops later this year.

Of the leaks, the one about the laptop Arc models is more concrete. A slide originally leaked on Twitter outlines a total of five different GPU models for laptops, ranging from a couple of slow-but-better-than-integrated options at the bottom all the way to a potential high-end GeForce or Radeon competitor.

The best of the GPUs includes 512 of Intel’s GPU execution units (EUs) attached to 16 GB of 16 Gbps video memory using a 256-bit interface; that wide a memory interface and that much memory suggests a high-end GPU that’s trying to compete with GeForce 3070- and 3080-series and Radeon 6800- and 6900-series products. The middle two GPU options—one 384 EU model with 12 GB of RAM connected to a 192-bit interface and one 256 EU model with 8 GB of RAM and a 128-bit interface—are reminiscent of the specs for Nvidia's mainstream RTX 3060 and 3050 laptop GPUs. The two low-end models, which connect to 4 GB of RAM with a 64-bit memory interface, seem poised to compete with GPUs like Nvidia's GeForce MX series or the beefed-up RDNA2 integrated GPUs in AMD's upcoming Ryzen 6000 laptop processors.

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Cargo ships could switch to renewable fuels, but it ain’t cheap (yet)

Using Europe as an example, the technical feasibility looks promising.

Cargo ships could switch to renewable fuels, but it ain’t cheap (yet)

Enlarge (credit: Darren Hillman)

The transition to clean energy involves some markets where we have solutions that are no-brainers (more wind and solar, please) but also some head-scratchers. Maritime shipping falls in the latter category. Barring a return to sailing, these vessels will continue to require relatively high energy-density fuel to cheaply move goods over long distances. So how do we clean up an industry that runs on heavy fuel oil?

A new study led by Boris Stolz and Maximilian Held at ETH Zürich analyzes plausible options for the fleet of cargo ships that operate within Europe. Their idea was to take real shipping data from 2018 and calculate the impact of changing out each ship’s propulsion system. For ships carrying heavy loads, they set a benchmark of ditching no more than 3 percent of their cargo in order to install a potentially emissions-free propulsion system. From there, they found out how many voyages could still be completed—and at what cost.

Renewable options

The team evaluated hydrogen, ammonia, methane, methanol, and diesel—all made from renewable feedstock and using clean electricity. That includes sourcing the carbon for methane, methanol, or diesel from captured atmospheric CO2. They also considered internal combustion engines and two kinds of fuel cells (proton-exchange membrane or solid oxide) with electric motors for turning those fuels into motion. Lithium-ion batteries were included, as well.

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Movie Companies Use DMCA ‘Shortcut’ To Expose Alleged CenturyLink Pirates

Personal data and other records held by ISPs on their customers are highly sensitive and as such, can only be handed over to third parties when the law requires it. In movie piracy cases, judges often order this type of disclosure after consideration but in a new case involving CenturyLink customers, customer details could already be in the hands of some extremely litigious copyright holders.

From: TF, for the latest news on copyright battles, piracy and more.

holeWhen copyright holders observe an IP address sharing unauthorized content in a BitTorrent swarm, they need to match that IP address to a real-life name and physical address if they want to take things any further.

Since there are no online resources that can reliably supply that information, copyright lawsuits – especially those aimed at extracting a cash settlement from a target – are often filed against ‘John Doe’ defendants. As such cases progress, rightsholders can request permission to obtain personal details from ISPs, which judges may agree to – or not.

However, while putting these matters before a judge is one option, another route exists. It requires no reasoned consideration by a judge as to whether such disclosure is the appropriate course of action because it bypasses the judge completely.

Controversial: DMCA Subpoenas Target Consumer ISP

So-called DMCA subpoenas are regularly used by anti-piracy groups in order to obtain the personal details of those who operate pirate sites and services. Typically they are filed against companies such as Cloudflare and Namecheap, who are then required to hand over their customers’ details.

In the majority of US lawsuits against regular internet users, the discovery process is used to identify alleged infringers but every now and again, the DMCA subpoena route is taken. This not only avoids most of the costs but also limits the chance of a judge getting in the way.

In the early 2000s when the RIAA launched its infamous “sue-em-all” campaign, it also took this route but after ISP pushback the practice appeared to be outlawed, at least against “mere conduit” providers. But of course, the status quo is there to be challenged so over time and with support from new case law, some copyright holders have tested the DMCA subpoena route again, and not without success.

CenturyLink Customers Set To Be Exposed

Voltage Pictures, Millenium Funding, and LHF Productions regularly appear in our reporting due to their litigious nature. They have sued (and settled with) torrent sites such as YTS and gone after VPN providers. They have also filed hundreds of cases against users in the US and Canada, and are currently trying their hand in the UK.

In an application filed last week in a Colorado court, LHF, Millennium, Voltage and Killing Link, requested a DMCA subpoena against CenturyLink Communications, one of the largest ISPs in the United States.

It alleges that 13 of the ISP’s customers downloaded/shared several movies including London Has Fallen, Angel Has Fallen, Kill Chain, Homefront, Status Update and Ava, the movie at the center of a related settlement campaign against alleged pirates in the UK.

“The subpoena shall authorize and order the service provider receiving the notification and the subpoena to expeditiously disclose to the copyright owner or person authorized by the copyright owner information sufficient to identify the alleged infringer of the material described in the notification to the extent such information is available to the service provider,” the application reads.

So if the RIAA ran out of road with DMCA subpoenas, why are they are being used here?

Movie Companies Present Their Reasoning

Citing a case between the RIAA and Charter Communications from 2005, the movie companies note that the Court of Appeals for the Eighth Circuit found that section 512(h) (limits on liability for service providers) “only applies to ISPs that directly store, cache, or provide links to infringing material” and that decision turned on the conclusion that DMCA notifications described in subsection (c)(3)(A) could not be applied to an ISP that acts as a conduit.

That does not put CenturyLink in the clear, they add.

“The Tenth Circuit has not yet concluded whether 512(h) applies to ISPs that function as a conduit for infringing material. However, the Fourth Circuit recently concluded that notifications similar to those described in subsection (c)(3)(A) were sufficient to trigger an ISP’s loss of the DMCA safe harbor,” they write, citing a ‘repeat infringer’ lawsuit filed by BMG against Cox Communications.

“Accordingly, Owner respectfully submits that the Tenth Circuit would likely conclude that 512(h) does also apply to ISPs that directly store, cache, or provide links to infringing material,” the application states, with a reminder a judge isn’t needed to issue the subpoena.

“[T]he clerk must issue and sign the proposed subpoena. 512(h)(4) provides that the Clerk, not a Judge should issue and sign the proposed subpoena.” (emphasis in original)

What Happens Next?

The application was filed on January 18 and one day later, the clerk signed and then issued the subpoena against CenturyLink Communications (dba Lumen Technologies Group). This means that the ISP will be required to hand over the alleged pirates’ personal details. The big question is what happens next.

Documents filed with the court indicate alleged infringements dating from January 1, 2020, through January 16, 2021, so it can be assumed that CenturyLink can tie these to an account holder. Should the ISP hand these details over, the movie companies can do whatever they like with them, providing the purpose is for “protecting the rights granted to the copyright owner.”

That could mean a settlement letter in the post or a full lawsuit aimed at achieving the same. However, given the track records of these companies acting together in far more complex cases against pirate apps (Showbox for example) and other online services, it’s possible there is something else these customers can do to assist in another case, perhaps in lieu of being sued.

A Tangled Web of the Same Companies & People

Finally, it’s interesting to see some familiar names cropping up in various parts of this action. It’s certainly no surprise to see attorney Kerry Culpepper making an appearance as he has done in many similar cases. But there are others too that demonstrate the interconnected nature of anti-piracy litigation across continents.

Copies of infringement notices sent to CenturyLink complaining about their customers’ behavior were sent by Copyright Management Services (CMS) in the UK whose former CEO was Patrick Achache, who also the COO of notorious piracy monetization outfit Guardaley. Achache is also managing director of Maverickeye, an anti-piracy tracking firm that provides evidence for the movie companies’ lawsuits and settlement campaigns.

CMS is now controlled by Lubesly Tellidua, a beauty queen from the Philippines who is also linked to Achache and Guardaley. At least one notice was sent by Anna Reiter, who also worked or works at Guardaley.

Other notices were sent to CenturyLink by Catherine Hyde, some under the heading of Copyright Management Services Ltd and others under a second company, PML Process Management Ltd of Cyprus. Hyde worked with H&B Administration LLP and TCYK LLC to extract cash payments from alleged pirates in the UK. She’s listed as working at H&B now.

Last year, H&B Administration LLP changed its name to FACT Administration LLP due to its deep connections with the Federation Against Copyright Theft. Several movie companies are also members of the LLP including Voltage Pictures, which is now running a cash settlement campaign against alleged pirates in the UK, using data provided by Maverickeye.

Former members of the LLP include Copyright Management Services, which provides the address ’43, Berkeley Square’ in its infringement notices to CenturyLink. That every anti-piracy entity (and in some cases the movie companies themselves) mentioned in this article either shares that same address or has close links to it is entirely unsurprising.

Documents relating to the subpoena application can be found here (1,2,3,4 pdf)

From: TF, for the latest news on copyright battles, piracy and more.

Acer toughens up its kid-focused Chromebook keyboards

Laptops come in screen sizes ranging from 11 to 14 inches, start at $350.

Acer-Chromebook 314 open and lid

Enlarge / Acer Chromebook 314. (credit: Acer)

Acer is taking an interesting approach to durability with four Chromebooks it announced today. Specifically, the kid-focused laptops' keyboards are designed to be hard to damage.

The Chromebook 512 (C852), Chromebook 511 (C734/C734T), Chromebook 314 (C934/C934T), and Chromebook Spin 311 (R722T/R723T) join Acer's education-focused machines with keyboards featuring "mechanically anchored keys." According to the company, that makes it difficult for users—especially curious young students—to rip keys out of the laptops, while still offering keyboards that are easy to repair or replace.

Diagram of the ridge.

Diagram of the ridge. (credit: Acer)

An Acer spokesperson further explained the keyboard to Ars, saying that a ridge under each key makes it difficult for fingers to get under and pop it out.

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FCC chair plans to block exclusive deals that limit ISP choice in apartments

Plan would block sale-and-leaseback wiring deals and exclusive revenue sharing.

FCC member Jessica Rosenworcel sitting at a table and speaking during a Senate committee hearing.

Enlarge / FCC member Jessica Rosenworcel speaks during a Senate Commerce Committee oversight hearing on June 24, 2020, in Washington, DC. (credit: Getty Images | Jonathan Newton)

The Federal Communications Commission is on course to block some types of exclusive deals that ISPs and landlords use to prevent broadband competition in apartment buildings and other multiple-tenant environments.

A plan announced Friday by FCC Chairwoman Jessica Rosenworcel would "prohibit providers from entering into graduated revenue sharing agreements or exclusive revenue sharing agreements with a building owner; require providers to disclose to tenants in plain language the existence of exclusive marketing arrangements that they have with building owners; [and] end a practice that circumvents the FCC's cable inside wiring rules by clarifying that existing Commission rules prohibit sale-and-leaseback arrangements that effectively block access to alternative providers," the FCC said.

Rosenworcel circulated the proposal to other commissioners, meaning they can vote on it at any time. The updated rules would apply to residential buildings that contain apartments or condo units and to office buildings.

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“Death Star” response from US would lock Russia out of 5G, advanced chips

Tech sanctions may be the new go-to foreign policy tool.

Russian mobile phone networks could be severely hampered if mooted US tech sanctions go into effect.

Enlarge / Russian mobile phone networks could be severely hampered if mooted US tech sanctions go into effect. (credit: Chris Ratcliffe/Bloomberg)

The US is considering restricting the flow of semiconductors into Russia to deter Russian President Vladimir Putin from invading Ukraine. The move would prevent the Russian military and much of the nation’s economy from advancing technologically.

The details of the sanctions are still being decided, but they would rely on similar restrictions that kneecapped Huawei, the Chinese tech company. Though most semiconductors are made overseas, US companies control huge swaths of the larger market, from chip design and manufacturing equipment to process and quality control. By restricting access to those companies' products and services, the US can effectively limit Russian access to the latest chips, even if they’re made in other countries.

“It’s one of the tools that US has come to prefer because it’s painful but it doesn’t involve the use of force,” James Andrew Lewis, senior vice president and director of the Strategic Technologies Program at the Center for Strategic and International Studies, told Ars. “It sort of freezes Russia at a technological moment.”

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