Our neighbors to the south are currently enjoying a pretty good salmon bite.Charter and sport boats alike have scored limits since the weekend on some very nice sized kings. Out of Shelter Cove, Jake Mitchell of Sea Hawk Sport Fishing mooched up limits of salmon for his customers on Tuesday fishing in 60 feet of water. A few sport guys also did well mooching over the weekend. The bite out of Fort Bragg has been good since the opener, with quite a few limits being reported. Most of the action …
Unexpectedly, quasar rotation axes show a peculiar alignment over billions of light-years.The European Southern Observatory, using its VLT (Very Large Telescope) in Chile, finished measuring the positions and rotations of 93 quasars and found something weird. These powerhouses of light, with powerful jets streaming out their poles, show unexpected traits in common. An ESO press release titled “Spooky Alignment of Quasars Across Billions of Light-years” states:New observations with ESO’s Very Large Telescope (VLT) in Chile have revealed alignments over the largest structures ever discovered in the Universe. A European research team has found that the rotation axes of the central supermassive black holes in a sample of quasars are parallel to each other over distances of billions of light-years. The team has also found that the rotation axes of these quasars tend to be aligned with the vast structures in the cosmic web in which they reside.The large-scale structure of the universe looks like a web or network of filaments, with large voids between them. This new clue to the quasars’ orientations in the filaments will require new models to explain how they got that way. One of the team astronomers says, “The alignments in the new data, on scales even bigger than current predictions from simulations, may be a hint that there is a missing ingredient in our current models of the cosmos.”More Haunting Finds in CosmologyJet set: The powerful jets emanating from active galaxies, quasars and black holes has long been a puzzle: where does all that phenomenal energy come from to accelerate the material almost to the speed of light? A paper in Nature that came out the same time as the ESO announcement is titled, “The power of relativistic jets is larger than the luminosity of their accretion disks.” Somehow, black holes and quasars are able to put the pedal to the metal:Here we report an analysis of archival observations of a sample of blazars (quasars whose jets point towards Earth) that overcomes previous limitations. We find a clear correlation between jet power, as measured through the γ-ray luminosity, and accretion luminosity, as measured by the broad emission lines, with the jet power dominating the disk luminosity, in agreement with numerical simulations. This implies that the magnetic field threading the black hole horizon reaches the maximum value sustainable by the accreting matter.Early galaxies: More evidence has arrived that galaxies appeared suddenly at the dawn of creation. PhysOrg reports the following from a Japanese team:A team of astronomers using the Subaru Telescope’s Suprime-Cam to perform the Subaru Ultra-Deep Survey for Lyman-alpha Emitters [LAE] have looked back more than 13 billion years to find 7 early galaxies that appeared quite suddenly within 700 million years of the Big Bang.Assuming that age, it represents an epoch in the first 5% of the universe’s history, right at the time when, according to the standard big bang model, “cosmic reionization” was removing the fog of particles moving out from the initial expansion, making the universe transparent.As many previous reports have shown over the last decade, early complex structure does not comport with the view of a slowly-evolving universe. “What would cause this?”, the article asks.In the team’s analysis of their observations, they suggest the possibility that the neutral fog filling the universe was cleared about 13.0 billion years ago and LAEs suddenly appeared in sight for the first time.”“However, there are other possibilities to explain why LAEs appeared suddenly,” said Dr. Ouchi, who is the principal investigator of this program. “One is that clumps of neutral hydrogen around LAEs disappeared. Another is that LAEs became intrinsically bright. The reason of the intrinsic brightening is that the Lyman-alpha emission is not efficiently produced by the ionized clouds in a LAE due to the significant escape of ionizing photons from the galaxy. In either case, our discovery is an important key to understanding cosmic reionization and the properties of the LAEs in early universe.”What this implies, after clearing away the fog of celebratory self-congratulation, is that they have no idea what happened to make these bright galaxies suddenly appear. More observations will be needed, the article ends. “By these observations, we will clarify the mystery of how galaxies were born and cosmic reionization occurred.” Understanding, therefore, lies out there in the future—not now.More fine tuning: Laymen comfortable with the big bang as an explanation for the universe’s origin may not have heard of this problem:“The Standard Model of particle physics, which scientists use to explain elementary particles and their interactions, has so far not provided an answer to why the universe did not collapse following the Big Bang,” explains Professor Arttu Rajantie, from the Department of Physics at Imperial College London.A press release from Imperial College London offers an explanation for why it did not collapse based on the properties of gravity and the Higgs boson; just a little gravity would have been enough to prevent the cosmic catastrophe, the astronomers say. The triumphal language in the press release shields the fact that the balance between the strength of gravity, the properties of the Higgs boson, and inflation (to say nothing of the initial conditions of the big bang) would have all had to conspire within tight constraints to allow our universe to survive and host life.Tricks of the trade: Physics enthusiasts may enjoy New Scientist‘s list of ways astronomers trick quantum physics to learn more about the universe. The “8 ways we bend the laws of physics” include ways to break light speed, take the twinkle out of stars, and reach absolute zero. A photo of Bible-believing physicist Lord Kelvin is found in the illustrations.Since secular cosmologists have repeatedly shown their ineptness at modeling the universe (e.g., 11/10/14, 5/17/14), and have even shown a propensity to suppress the evidence (7/01/14) , it’s time for alternatives. Are you able to think outside the box? What do you make of these quasar polar alignments? How about the powerful engines that produce the jets? How could you get instant galaxies from an explosion?Creation astronomers will have puzzles to address, too, but with a different starting ideology, they deserve a place at the table to make sense of these observations. By observations, we do not mean the ages of things, nor their position in the timeline of the big bang model. Those are the very paradigms that are ripe for doubting. (Visited 45 times, 1 visits today)FacebookTwitterPinterestSave分享0
18 July 2012 On Monday evening, while the city of Pretoria was in the grip of a cold spell, Jonathan Thopola fought with his friends over a blanket and ended up having to spend the night with nothing covering his freezing body. But on Tuesday night he was able to sleep warmly and peacefully, after receiving a blanket from Deputy Minister of Women, Children and People with Disabilities Hendrietta Bogopane-Zulu and her team. Aged 23, Thopola from Mpulamanga left his home in January this year to find work in Pretoria. However, after two months, he lost his job and couldn’t afford to pay rent for the room he was sharing with some people, and for the past five months he has been sleeping on the street while trying to get another job. On Tuesday, Thopola had a reason to smile. He and some of the other people living on the streets in and around Tshwane got a surprise visit from Bogopane-Zulu, who cheered them up and made sure they had a warm and decent meal. As part of celebrating International Nelson Mandela Day, Bogopane-Zulu decided to dedicate 67 minutes of her time to handing over thermal mugs with soup, pizza, bread, cake, juice and blankets to people living on the streets. This was made possible due to a partnership between the department, Mmabatho Foundation, Absa Bank, Bidair and Romans Pizza. Bogopane-Zulu said she had decided to dedicate her 67 minutes to homeless people because she wanted to bring hope to them and let them know that even though they were on the streets, they still had human rights and also deserved to enjoy freedom like all South Africans. “Half of the time, we turn a blind eye on some of the realities we live under,” said Bogopane-Zulu. “It’s hard for them to be heard and be recognised. However, they are here and are not going anywhere, due to various reasons which brought them here. The best we can do is to keep them warm and give them things they can use.” Thopola, who couldn’t hold back his excitement after being handed a blanket, said the initiative showed that even though they have nothing, their existence was being acknowledged and appreciated by Bogopane-Zulu. “They’ve brought us expensive food and new blankets, which shows that they are thinking about us in this freezing weather and it means a lot to all of us knowing that they care,” said Thopola, who sleeps at Church Square. Bogopane-Zulu also visited homeless people on the streets of Pretoria East, where she handed over more food and blankets. Source: SANews.gov.za
Calcutta Medical College and Hospital authorities have threatened to take legal action against the students on the ninth day of their hunger strike in the State capital’s premier medical institution.The acting principal of the college, Dr. Ramanuj Sinha, told the striking students on Wednesday that “legal actions will be initiated” if any of the students falls sick, claimed some students.“It is seriously unfortunate that the authorities are threatening us instead of addressing our grievances,” said Soumyadeep Roy, a third-year student.The ongoing protests are against the college authority’s decision to allocate an 11-storey boys’ hostel to newcomers when the senior students do not have proper accommodation.Four students had previously fallen seriously ill and had to be given medical attention. The students said that they will sit on a mass hunger strike soon.
Related Items: Facebook Twitter Google+LinkedInPinterestWhatsApp Facebook Twitter Google+LinkedInPinterestWhatsAppA Sweet T’s restaurant worker was attacked and hospitalized after two masked men entered the restaurant demanding cash.Both men fled the scene before the police arrived. The woman was treated for her injuries and released. Also, police report that a home under construction was broken into and nine rolls of paint steel and a gallon of gas were stolen … and a home in Five Cays lost a television set, a DVD player and a cell-phone at the arms of robbers. The Police is also investigating a Malicious Damage to Property incident in the Long Bay area, where it was discovered that the wires in a breaker box were cut.
A man looks at a screen displaying news of markets update inside the Bombay Stock Exchange (BSE) building in Mumbai, June 20, 2016.Reuters file [Representational Image]Asian shares turned tail on the first trading day of the new year as more disappointing economic data from China darkened the mood and erased early gains in U.S. stock futuresMSCI’s broadest index of Asia-Pacific shares outside Japan skidded 1.1 percent as a private survey showed China manufacturing activity contracted for the first time in 19 months.The Caixin/Markit Manufacturing Purchasing Managers’ Index (PMI) for December fell to 49.7, from 50.2 in November, and followed a raft of soft trade data from the Asian region.The Shanghai blue chip index quickly shed 1 percent and South Korea fell 0.8 percent. Japan’s Nikkei was closed for a holiday.E-Mini future for the S&P 500 lost their early gains to be down 0.2 percent.The Australian dollar, often used as a proxy for China sentiment, lost 0.5 percent to its lowest since February 2016 at $0.7017.The safe-haven yen extended its broad rally as the U.S. dollar dropped to 109.53, near its lowest since June last year. The dollar was otherwise mixed, edging up a little on the euro to $1.1445 but off a shade on a basket of currencies at 96.166.The dollar has been dragged by a steep fall in Treasury yields in recent weeks as investors wagered the U.S. Federal Reserve would not raise rates again, even though it is still projecting at least two more hikes.AN END TO HIKESFederal Reserve Chairman Jerome Powell will have the chance to comment on the economic outlook when he participates in a joint discussion with former Fed chairs Janet Yellen and Ben Bernanke on Friday.Also looming are a closely-watched survey on U.S. manufacturing due on Thursday, followed by the December payrolls report on Friday.Fed fund futures have all but priced out any hike for this year and now imply a quarter point cut by mid-2020.The Treasury market also assumes the Fed is done and dusted. Yields on two-year paper have tumbled to 2.49 percent, just barely above the cash rate, from a peak of 2.977 percent in November.Yields on 10-year notes have dived to their lowest since last February at 2.69 percent, making a bullish break of a major chart level at 2.717 percent.The spread between two- and 10-year yields has in turn shrunk to the smallest since 2007, a flattening that has been a portent of recessions in the past.”What is clear is that the global synchronised growth story that propelled risk assets higher has come to the end of its current run,” the Treasury team at OCBC Bank wrote in a note.”Inexorably flattening yield curves and, now, partially inverted U.S. yield curve have poured cold water on further policy normalisation going ahead.”The pullback in the dollar and the chance of no more U.S. rate hikes has been a boon for gold. The precious metal fetched $1,280.40 an ounce to be close to a six-month peak.Oil prices flagged anew after a punishing 2018. U.S. West Texas Intermediate crude (WTI)futures slumped nearly 25 percent last year, while Brent lost 19.5 percent.On Wednesday, U.S. crude futures eased 2 cents to $45.39 a barrel, while Brent fell 18 cents to $53.64.
Journal information: Nature Physics Citation: Researchers devise a means to control chemical reactions in individual atoms (2012, July 25) retrieved 18 August 2019 from https://phys.org/news/2012-07-chemical-reactions-individual-atoms.html © 2012 Phys.org Explore further More information: Controlling chemical reactions of a single particle, Nature Physics (2012) doi:10.1038/nphys2373AbstractTraditionally, chemical reactions have been investigated by tuning thermodynamic parameters, such as temperature or pressure. More recently, laser or magnetic field control methods have emerged to provide new experimental possibilities, in particular in the realm of cold collisions. The control of reaction pathways is also a critical component to implement molecular quantum information processing. For these studies, single particles provide a clean and well-controlled experimental system. Here, we report on the experimental tuning of the exchange reaction rates of a single trapped ion with ultracold neutral atoms by exerting control over both their quantum states. We observe the influence of the hyperfine interaction on chemical reaction rates and branching ratios, and monitor the kinematics of the reaction products. These investigations advance chemistry with single trapped particles towards achieving quantum-limited control of chemical reactions and indicate limits for buffer-gas cooling of single-ion clocks.via Arstechnica (Phys.org) — In the early days of chemistry, finding out what happened when two or more chemicals were mixed together led to the development of all manner of new materials and to deriving useful events, such as the production of heat or light, or things exploding. As the science progressed however, researchers found they wanted to know more about what really goes on when chemicals react, but were unable to find out due to the massive number of interactions that occur during even the most ordinary chemical reactions. Nowadays, researchers want to delve even deeper, to discover what goes on at the quantum level. To that end, a team working at the Cavendish laboratory in Cambridge, UK has developed a way to monitor and control one of the most basic chemical reactions, the meeting of two dissimilar individual atoms. In their paper published in Nature Physics they describe how they were able to do so by setting up special experiments in a cold environment using a laser. Discovery could pave the way for quantum computing Under normal conditions, when two atoms meet, usually nothing happens. There is no attraction force between the two thus no reason for them to interact. When one or both are ions, things are different of course as the ions have either more or less electrons than stable atoms, causing them to have an electric charge. It was this property that the team used when setting up their experiments, which were meant to serve as an observational study, not to create something new, to see what happens at the quantum level.In their experiments, the team used a magnetic field to isolate two different types of atoms, a ytterbium ion and a neutral rubidium, in a very cold environment to slow things down. But prior to pushing them together with a laser, they first excited the ytterbium ion by shooting it with laser light to inject it, so to speak with kinetic energy. That energy they noted, could result in movement due to heat ejection or in the production of photons.Next, they ran two different types of experiments. In the first, they turned off the lights and watched as the two atoms eventually came near one another, to see if the interaction between the two would result in the release of photons, i.e. light. It did not, instead, it resulted in both atoms moving around in the trap at higher speeds.In the second experiment they used a laser to push the energized ion towards the neutral atom and found that in some, but not all cases, an ion was exchanged, causing the ytterbium atom to become neutral and the rubidium to become ionized; a clear example of a controlled chemical reaction between just two atoms. The researchers noted that the spin state of the atoms made a difference in the outcome of the reaction, meaning that the atomic nucleus of the atom had an impact, which goes counter to conventional thinking.The experiments and results the researchers achieved show that chemical reactions can not only be studied at the quantum level, but controlled as well, a finding that will likely have a major impact on both chemistry and physics research going forward. This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.