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|Posté le: Ven 14 Sep - 05:34 (2018) Sujet du message: energy, according to a news release of NAOC.
|LOS ANGELES Authentic Damian Lillard Jersey , Sept. 11 (Xinhua) -- An international research team led by Chinese astronomers revealed an evidence of dynamical dark energy.
The discovery, recently published on Nature Astronomy, with a News & Views article written by a world expert on cosmology, found that the nature of dark energy may not be the cosmological constant introduced by Albert Einstein 100 years ago, which is crucial for the study of dark energy.
The new study was supported by the National Natural Science Foundation of China (NSFC), Chinese Academy of Sciences Jusuf Nurkic Jersey , and a Royal Society Newton Advanced Fellowship.
Revealing the nature of dark energy is one of key goals of modern sciences. The physical property of dark energy is represented by its Equation of State (EoS), which is the ratio of pressure and energy density of dark energy.
In the traditional Lambda-Cold Dark Matter (LCDM) model, dark energy is essentially the cosmological constant, i.e., the vacuum energy, with a constant EoS of -1. In this model Seth Curry Jersey , dark energy has no dynamical features.
In 2016, a team within the SDSS-III (BOSS) collaboration led by Prof. Gong-Bo Zhao of National Astronomical Observatories of China (NAOC) performed a successful measurement of the Baryonic Acoustic Oscillations (BAO) at multiple cosmic epochs with a high precision.
Based on this measurement and a method developed by Zhao for dark energy studies, the Zhao team found an evidence of dynamical dark energy at a significance level of 3.5 sigma. This suggests that the nature of dark energy may not be the vacuum energy, but some kind of dynamical field, especially for the quintom model whose EoS varies with time and crosses the -1 boundary during evolution, according to NAOC.
"As the Zhao team reported in this work C.J. McCollum Jersey , a dynamical dark energy model is able to naturally reconcile tensions between local and primordial measurements of cosmological parameters in the LCDM model," Prof. Xinmin Zhang at the Institute of High Energy Physics (IHEP) of the Chinese Academy of Sciences (CAS) told Xinhua.
"Which makes a crucial step towards understanding the nature of dark energy," he added.
The dynamics of dark energy needs to be confirmed by next-generation astronomical surveys. The team points to the upcoming Dark Energy Spectroscopic Instrument (DESI) survey, which aims to begin creating a 3D cosmic map in 2018.
In the next five to ten years, the world largest galaxy surveys will provide observables which may be key to unveil the mystery of dark energy, according to a news release of NAOC.
LONDON Damian Lillard Jersey , May 10 (Xinhua) -- Bournemouth's promotion to England's football elite, the Premiership, is forcing the town's small airport to prepare becoming a high-flyer.
The airport's owners are now working on a make-over to create a VIP area in readiness for jets arriving with teams and executives from around the world.
Luckily the airport is owned by same publicly-owned operation that runs Manchester Airport, the city that is home to two of the most famous clubs in the world, Manchester United and Manchester City.
Bournemouth is, in footballing language Portland Trail Blazers Hats , a "lower league" airport, handling around 800,000 passengers a year, compared to the more than 25 million using Manchester in the past year.
A spokesman for the airport said Sunday: "Following the historic promotion of A.F.C Bournemouth to the English Premier League, we are considering plans to ensure we are 'Premier League' ready and able to cope with next seasons influx of global football superstars, their accompanying wives and girlfriends and football fans representing some of the world's richest clubs."
Bosses are now taking advice from Manchester and East Midlands airports who are familiar in dealing with the often unique requirements that come with football fliers.
Manchester Airport regularly sees the city's two rival teams and their international opposition come through its doors.
Ideas currently being considered at Bournemouth include a dedicated lounge for friends and families of the team and the creation of a "fast-track" processing lane at the arrivals area for football kit.
The airport is also working on a new cocktail range plus a spa and manicure units as well as a new level of attractive landing rates for football-related private jets on match days.
The airport has also received requests to re-name the terminal in honor of Bournemouth manager Portland Trail Blazers T-Shirts , Eddie Howe, who successfully guided the team, known as the Cherries into the Premier League for the first time in history.
Paul Knight, General Manager at Bournemouth Airport said: "We are still celebrating the fantastic achievement of The Cherries, but we will liaise with our colleagues at Manchester and East Midlands airports to ensure we are Premier League ready."
"The promotion is a massive boost for the town. We are keen to play the best role we can in ensuring that their first season in the Premier League is as successful as possible and choosing to fly to away games as opposed to making long journeys by road seems a smart move in any coaching manual," said Knight.
Bournemouth is almost 590 km from the most distant Premiership club Portland Trail Blazers Hoodie , Sunderland. A journey by air would take less than an hour, compared to a more than six-hour road trip.
Bournemouth currently operates flights to destinations including Manchester, Amsterdam, Alicante, Paris, Tenerife and Dublin.
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