New dark energy may explain why Universe is expanding

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New York, Sep 20 | Cosmologists have found signs of a previously unknown type of dark energy — a primordial form of the substance — which may explain why the cosmos now seems to be expanding faster than theory predicts.

According to cosmologists, the type of dark energy might have existed in the first 3,00,000 years after the Big Bang, Nature reported.

A tentative first trace of this ‘early dark energy’ was detected in data collected between 2013 and 2016 by the Atacama Cosmology Telescope (ACT) in Chile, revealing two separate studies — posted on the arXiv preprint server, meaning not yet peer-reviewed.

The ACT, as well as the South Pole Telescope in Antarctica, is designed to map the cosmic microwave background (CMB) — primordial radiation sometimes described as the afterglow of the Big Bang. The CMB is one of the pillars of cosmologists’ understanding of the Universe.

Interpreting the CMB on the basis of the early dark energy model and ACT data showed that the Universe is now 12.4 billion years old, about 11 per cent younger than the 13.8 billion years calculated using the standard model, Colin Hill, co-author of the ACT team, who is a cosmologist at Columbia University in New York City, was quoted as saying.

Correspondingly, the current expansion would be about 5 per cent faster than the standard model predicts — closer to what astronomers calculate today.

Both researchers noted that while the data found is not yet strong enough to detect early dark energy, further observations from the ACT and another observatory, the South Pole Telescope, could provide a more stringent test soon.

“There are a number of reasons to be careful to take this as a discovery of new physics,” said Silvia Galli, a cosmologist at the Paris Institute of Astrophysics.

But Galli also warned that the ACT data seem to be inconsistent. Although the ACT’s polarisation data might favour early dark energy, it is unclear whether its other major set of data — its map of CMB temperatures — shows such a preference. She added the need to cross-check the results using the South Pole Telescope.

Source: IANS

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Weekly Technical Share Market Outlook

Weekly Technical Share Market Outlook

The Indian market recovered with modest gain against the resilient global cues. Throughout the week, Sensex traded in a narrow range following an uneven move. Sensex ended at 54884.66 gaining 558 points or 1.03 percent while Nifty settled at 16352.45 with 86 points or 0.53 percent on a weekly basis. While Banknifty ended at 35613.30 levels with strong bounce with an upside of 3.90 percent in a week.

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INDIA VIX has cooled off during the week with 7.01 percent and has settled at 21.48 levels. Investors and traders may watch out key events such as the RBI meet in the second week as well as the US Fed meeting likely to be on 14-15 June for monthly expiry. As corporate results are likely to end soon stocks would expect less volatility in upcoming days. In Nifty stocks, HDFCLIFE gained 9.61 percent while DIVISLAB shed 18.41 percent in a week. Sectorally Nifty Finance saw the highest gains of 4.32 percent followed by the Nifty Auto with 3.26 percent. On the flip side Nifty Pharma, Energy, Realty and PSE lose more than 3 percent each on a weekly basis. However Midcap gained 0.77 percent while Smal lcap dropped by 3.42 percent.

Technically, Nifty has formed a bullish candle on the weekly chart with a long tail suggesting strong support around 15900 levels, while on the upside 16800 may act as strong resistance. Index has taken support from the previous horizontal line & closed above 21-days Simple Moving Averages that indicates further pullback rally in the near term.

Indicators such as RSI remained in the neutral zone while MACD suggest some positive cross over observed in daily time frame suggest some sign of reversal. Coming to the OI Data, on the call side the highest OI witnessed was 16500 followed by 16800 strike prices while on the put side, the highest OI was at 16000 strike price. Overall, Nifty is having support at 16000 mark while on the upside 16500 followed by 16750 may act as an immediate resistance. While Bank nifty has support around 34300 while resistance is placed at 36800 on weekly chart.

Om Mehera
Research Associates
Choices Broking

Souce: Choice India

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