The Bantayan municipal government wont allow sett

first_imgThe Bantayan municipal government won’t allow settlers to build homes near the coast to spare them from storm surges caused by typhoons.Vince Escario, spokesman of Bantayan Mayor Chris Escario, said a storm surge occurred when supertyphoon Yolanda hit Bantayan Nov. 8 but they were lucky that it was low tide at the time.ADVERTISEMENT If it had been high tide, Bantayan would have suffered the same devastation as that in Tacloban City.Bantayan has started its clearing operations at the coastal areas.FEATURED STORIESNEWSINFOSenate to probe Tolentino’s ‘novel legal theories’ on oral agreementsNEWSINFOLocsin wants to drop ‘visas upon arrival’ privilegeNEWSINFOPalace open to make Dengvaxia usable again as dengue cases spikeEscario said illegal settlers will be relocated. A day before the typhoon, town officials evacuated residents in coastal areas to the sports complex but some still opted to stay in their houses.Escario said some people started to go out thinking that the storm was over but after 30 minutes, it rained again and this was followed by a storm surge. View comments Baybayin revival makes native PH history hip WHAT WENT BEFORE: Dengvaxia is world’s first dengue vaccine LATEST STORIES MOST READ Escario said it will take six months to fully restore the town’s power supply.Business establishments and stores are already open but their poultry industry bore the brunt of the typhoon’s wrath, reducing production by 60 percent.Estimated damage runs to more than P4 billion.The Bureau of Fisheries and Aquatic Resources (BFAR-7) said it would provide 3,000 motor bancas to registered fishermen hit by the typhoon in Bantayan Island and the rest of Central Visayas.BFAR-7 Asst. Regional Director Allan Poquita told reporters that the agency will also provide seaweed seedlings to the fishermen.He said they will also distribute 119,700 packs of relief goods to the 13 storm-affected towns in northern Cebu.Read Next Don’t miss out on the latest news and information. Painters refuse to go quietly PCSO to focus on improving transparency of gaming activities PLAY LIST 03:26PCSO to focus on improving transparency of gaming activities01:39Sotto open to discuss, listen to pros and cons of divorce bill06:02Senate to probe Tolentino’s ‘novel legal theories’ on oral agreements01:50Palace open to make Dengvaxia usable again as dengue cases spike01:49House seeks probe on ‘massive corruption’ in PCSO01:37PCSO estimates P250M in Lotto revenue loss due to suspension Carpio gets nominated as CJ for 4th time Bantayan officials met with land owners to discuss where to relocate the illegal settlers.MORE STORIESnewsinfoPM Boris Johnson visits Belfast as Brexit woes hurt UK economynewsinfoNorth Korea says it tested new rocket systemnewsinfoSen. Pia Cayetano: Judge our clan based on performanceMORE STORIESnewsinfoPM Boris Johnson visits Belfast as Brexit woes hurt UK economynewsinfoNorth Korea says it tested new rocket systemnewsinfoSen. Pia Cayetano: Judge our clan based on performanceEscario said some lots will be paid in cash while others will be paid in installment basis.There were 21 reported casualties in Bantayan town during tehe storm.Three drowned in the the storm surge.Bantayan has 25 barangays and four are adopted by an organization.ADVERTISEMENT Locsin wants to drop ‘visas upon arrival’ privilege Senate to probe Tolentino’s ‘novel legal theories’ on oral agreements PH protests Chinese boat swarm, warship passage SMC bags Bulacan airport projectlast_img read more

Highest energy light ever seen traced to Crab nebula

first_img Click to view the privacy policy. Required fields are indicated by an asterisk (*) Sign up for our daily newsletter Get more great content like this delivered right to you! Country NASA/ESA/J. DePasquale (STScI) Hundreds of detectors at the Tibet ASgamma array were used to capture particle showers from gamma rays striking Earth. A collaboration of Chinese and Japanese astrophysicists has reported the highest energy photons ever seen: gamma rays with energies up to 450 trillion electron volts (TeV).The particles of light were traced back to the Crab nebula, the remnant of a stellar explosion observed by Chinese astronomers nearly 1000 years ago, and the powerful pulsar, a dense neutron star, that now sits at the nebula’s heart. “We know the environment of a pulsar is extreme,” says Geraint Lewis, an astrophysicist at the University of Sydney in Australia who was not involved in the research. The question raised by the finding “is just how extreme,” he says. He says the results will help constrain ideas about how the photons are boosted to such extraordinary energies.The Tibet ASgamma experiment spotted the photons using an array of nearly 600 scintillation detectors, sensors that turn particle strikes into electronic signals. The detectors are spread out across 66,000 square meters in a valley 4300 meters above sea level on the Tibetan Plateau in China. When gamma rays strike Earth’s atmosphere they create air showers—spreading cascades of electrons and other subatomic particles. As these particles hit the detectors, the timing and energy of the strikes are recorded—enabling astronomers to reconstruct the energy and trajectory of the original gamma ray. 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Fortunately, the air showers sparked by cosmic rays contain a higher proportion of muons, short-lived cousins of the electrons, than the showers from gamma rays. The muons can be detected in underground water chambers and used to distinguish between gamma ray and cosmic ray events. Gamma rays are prized because they travel through the cosmos in straight lines, and thus point back to their sources. Cosmic rays, in contrast, get pulled into corkscrew trajectories by magnetic fields, making their origins obscure.To improve muon detection, the Tibet ASGamma team buried water tank detectors several meters below ground at 64 locations around the site in Yangbajing, a town northwest of Lhasa on the Tibetan Plateau, giving the array “the world’s highest sensitivity to gamma rays in the 100-TeV region,” says Masato Takita, an experimental physicist for the project at the University of Tokyo’s Institute for Cosmic Ray Research in Kashiwa, Japan. With the enhanced capabilities, “I believed we could find results that no one ever found before,” adds Huang Jing, an astrophysicist at the Chinese Academy of Science’s Institute of High Energy Physics in Beijing. The Crab nebula, the remnant of a 1000-year-old supernova, is emitting the most energetic light ever detected. Institute of High Energy Physics/Chinese Academy of Sciences And that they did. From February 2014 to May 2017, the array caught 24 gamma rays ranging from 100 TeV to 450 TeV coming from the Crab nebula, the team of 90 researchers from two dozen institutions reports in a paper accepted at Physical Review Letters. The strikes shatter the previous record holder: 75-TeV gamma rays observed by the High Energy Gamma Ray Astronomy experiment located on La Palma, one of Spain’s Canary Islands.Modeling had predicted the existence of such high energy gamma rays, so although the finding isn’t a surprise, it still provides valuable confirmation for assumptions thinly supported by observations, says Felix Aharonian, an astrophysicist at the Dublin Institute for Advanced Studies.The models point to a process called inverse Compton scattering, in which the pulsar’s magnetic field whips up electrons to energies far higher than achieved in particle accelerators on Earth. The electrons then smash into the ambient photons that pervade the universe as a part of the cosmic microwave background and send them speeding through the galaxy. The photons “receive a huge amount of energy in that kick,” Lewis says. The results show “the Crab nebula is the most powerful natural electron accelerator known so far in our galaxy,” Huang says.Lewis adds that the observed energies of gamma ray photons have been steadily going up thanks to improved detectors. He believes supermassive black holes that sit at the centers of galaxies might prove to be another source of high energy gamma rays.More evidence may be on the way with the opening of new observatories. The multinational Cherenkov Telescope Array may be completed by 2025, and the Large High Altitude Air Shower Observatory, a partially completed facility also on the Tibetan Plateau, started observations in April and should be up to full speed next year.For the moment, however, the Tibet ASgamma experiment is leading the hunt for “PeVatrons”—astrophysical sources capable of accelerating gamma ray photons and cosmic rays up to one petaelectronvolt, or 1000 TeV. “We expect to identify a lot of PeVatrons,” Huang says. Signals from other 100-TeV sources besides the Crab nebula may already be hidden in the Tibet ASgamma experiment data, a possibility Takita says is “currently under analysis.”last_img read more