G-SAT successfully launched by ISRO

News Network
January 17, 2020

Bengaluru, Jan 17: India’s latest communication satellite GSAT-30 was successfully launched from the Spaceport in French Guiana during the early hours on Friday.

In a press release, ISRO, has stated that the launch vehicle 'Ariane-5 VA-251' was blasted off from Kourou Launch Base, French Ginana at 0230 hours, carrying India’s GSA-30 and EUTELSAT KONNECT for Eutelasat, as per schedule.

The Ariane 5 upper stage in an elliptical Geosynchronous Transfer Orbit.

With a lift-off mass of 3,357 kg, GSAT-30 will provide continuity to operational services on some of the in-orbit satellites.

GSAT-30 derives its heritage from ISRO’s earlier INSAT/GSAT satellite series and will replace INSAT-4A in orbit.

“GSAT-30 has a unique configuration of providing flexible frequency segments and flexible coverage. The satellite will provide communication services to Indian mainland and islands through Ku-band and wide coverage covering Gulf countries, a large number of Asian countries and Australia through C-band," ISRO Chairman Dr K Sivan said.

Dr Sivan also said that “GSAT-30 will provide DTH Television Services, connectivity to VSATs for ATM, Stock-exchange, Television uplinking and teleport Services, Digital Satellite News Gathering (DSNG) and e-governance applications. The satellite will also be used for bulk data transfer for a host of emerging telecommunication applications.”

ISRO’s Master Control Facility (MCF) at Hassan in Karnataka took over the command and control of GSAT-30 immediately after its separation from the launch vehicle. Preliminary health checks of the satellite revealed its normal health.

In the days ahead, orbit-raising maneuvers will be performed to place the satellite in Geostationary Orbit (36,000 km above the equator) by using its onboard propulsion system.

During the final stages of its orbit raising operations, the two solar arrays and the antenna reflectors of GSAT-30 will be deployed. Following this, the satellite will be put in its final orbital configuration.

The satellite will be operational after the successful completion of all in-orbit tests.

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Agencies
May 22,2020

New Delhi, May 22: The number of COVID-19 cases averted due to the lockdown is in the range of 14-29 lakh, while the number of lives saved is between 37,000 and 78,000, the government said on Friday citing various studies, and asserted that the unprecedented shutdown has paid “rich dividends” in the fight against the pandemic.

The lockdown in India has been a timely, graded, proactive and pre-emptive public health measure to fight the COVID-19 pandemic and has been part and parcel of the government’s overall strategy, Dr V K Paul, Member (Health), NITI Aayog, and Chairman, Empowered Group 1, said at a media briefing on the COVID-19 situation.

The government imposed the nationwide lockdown from March 25 to prevent the spread of the novel coronavirus and it is currently in its fourth phase.

Like the number of cases, the growth rate of number of COVID-19 deaths too has fallen significantly due to the lockdown, marking a notable difference between pre-lockdown and post-lockdown situations, he said.

At the briefing, Pravin Srivastava, Secretary, Ministry of Statistics and Programme Implementation gave model-based estimates on COVID-19 cases and deaths which have been prevented due to the lockdown.

As per Boston Consulting Group's model, the lockdown saved between 1.2 lakh and 2.1 lakh lives, while the number of COVID-19 cases averted is between 36 lakh and 70 lakh, he said.

According to Public Health Foundation of India, nearly 78,000 lives have been saved due to the lockdown, Srivastava said.

Citing a model by two independent economists, he said that around 23 lakh COVID-19 cases and 68,000 deaths have been averted due to the lockdown.

Some independent experts, including retired scientists, have calculated that around 15.9 lakh cases and 51,000 deaths have been averted due to the lockdown, Srivastava said.

A joint study by the Ministry of Statistics and Programme Implementation and the Indian Statistical Institute found that around 20 lakh COVID-19 cases and 54,000 deaths were averted due to lockdown, he said.

The number of COVID-19 cases averted due to the lockdown is in the range of 14-29 lakh, while the number of lives saved is between 37,000 and 78,000, the official said.

“We are fully confident that the lockdown, with full public cooperation, has reaped rich dividends,” Srivastava said.

The strong defence of the lockdown, comes a day after the health ministry said the period of lockdown has been gainfully utilized to ramp up the health infrastructure, with around 3,027 dedicated COVID-19 hospitals and 7,013 care centres being readied across the country to fight the disease.

The announcement on Thursday came after some media reports questioned the country's preparedness to deal with the highly infectious disease.

"There are reports in a section of the media about some decisions of the government regarding the lockdown implementation and response to COVID-19 management. The period of the lockdown has been gainfully utilised to ramp up the health infrastructure in the country," the ministry had said.

Addressing the press briefing on Friday, joint secretary in the health ministry Lav Agarwal said 48,534 COVID-19 patients, which is about 41 per cent of the total cases, have recovered so far. As many as 3,234 patients have recovered in the last 24 hours, he said’

The COVID-19 mortality rate has dropped from 3.13 per cent on May 19 to 3.02 per cent as focus was on containment measures andclinical management of cases, Agarwal said.

An ICMR official said 27,55,714 tests for COVID-19 have been conducted till 1 pm Friday with 1,03,829 tests done in one day. Over 1 lakh tests for COVID-19 have been done each day for the last four days, the official said.

The growth rate of novel coronavirus cases witnessed a steep decline from Apr 4 when lockdown put a brake on the speed of increase of cases, V K Paul said.

The number of COVID-19 cases would have risen exponentially had the lockdown not been implemented, he said, adding that the doubling rate of cases was 3.4 days when the lockdown started and it is 13.3 days at present.

The COVID-19 outbreak in India has remained confined to limited areas with 80 per cent of active cases in just five states, Paul said

He said around 80 pc of COVID-19 deaths have been in Maharashtra, Gujarat, Madhya Pradesh, West Bengal and Delhi. 

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Agencies
July 2,2020

Leiden, Jul 2: Astronomers have discovered a luminous galaxy caught in the act of reionizing its surrounding gas only 800 million years after the Big Bang.

The research, led by Romain Meyer, PhD student at UCL in London, UK, has been presented at the virtual annual meeting of the European Astronomical Society (EAS).

Studying the first galaxies that formed 13 billion years ago is essential to understanding our cosmic origins. One of the current hot topics in extragalactic astronomy is 'cosmic reionization,' the process in which the intergalactic gas was ionized (atoms stripped of their electrons).

Cosmic reionization is similar to an unsolved murder: We have clear evidence for it, but who did it, how and when? We now have strong evidence that hydrogen reionization was completed about 13 billion years ago, in the first billion years of the universe, with bubbles of ionized gas slowly growing and overlapping.

The objects capable of creating such ionized hydrogen bubbles have however remained mysterious until now: the discovery of a luminous galaxy in which 60-100 percent of ionizing photons escape, is likely responsible for ionizing its local bubble. This suggests the case is closer to being solved.

The two main suspects for cosmic reionization are usually 1) a population of numerous faint galaxies leaking ~10 percent of their energetic photons, and 2) an 'oligarchy' of luminous galaxies with a much larger percentage (>50 percent) of photons escaping each galaxy.

In either case, these first galaxies were very different from those today: galaxies in the local universe are very inefficient leakers, with only <2-3 percent of ionizing photons escaping their host. To understand which galaxies governed cosmic reionization, astronomers must measure the so-called escape fractions of galaxies in the reionization era.

The detection of light from excited hydrogen atoms (the so-called Lyman-alpha line) can be used to infer the fraction of escaping photons. On the one hand, such detections are rare because reionization-era galaxies are surrounded by neutral gas which absorbs that signature hydrogen emission.

On the other hand, if this hydrogen signal is detected it represents a 'smoking gun' for a large ionized bubble, meaning we have caught a galaxy reionizing its surroundings. The size of the bubble and the galaxy's luminosity determines whether it is solely responsible for creating this ionized bubble or if unseen accomplices are necessary.

The discovery of a luminous galaxy 800 million years after the Big Bang supports the scenario where an 'oligarchy' of bright leakers emits most of the ionizing photons.

"It is the first time we can point to an object responsible for creating an ionized bubble, without the need for a contribution from unseen galaxies.

Additional observations with the upcoming James Webb Space Telescope will enable us to study further what is likely one of the best suspects for the unsolved case of cosmic reionization," said Meyer.

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Agencies
January 16,2020

New Delhi, Jan 16: In trouble brewing for the Gautam Adani-led M/S Adani Enterprises, the Central Bureau of Investigation (CBI) on Thursday said that it has registered a case against former officials of the National Co-operative Consumer Federation (NCCF) and others over alleged irregularities in supply of coal to the Andhra Pradesh Power Generation Corporation (APGENCO) in 2010.

The CBI in its FIR has named Virendra Singh, the then Chairman of the NCCF, G P Gupta, the then MD of the NCCF, S C Singhal, the then Senior Advisor of NCCF, Adani Enterprises Ltd and other unknown public servants and others for criminal conspiracy, cheating and criminal misconduct by public servants.

According to CBI, the case was filed on Wednesday after the preliminary enquiry revealed the crime by the officials named in the FIR and the Adani Enterprises was found to be true.

The FIR alleged that on June 26, 2010, APGENCO floated a tender enquiry for supply of six lakh metric tonnes of imported coal "on free on rail destination" basis to Dr Narla Tata Rao Thermal Station (NTTPS), Vijaywada and Rayalasaleema Thermal Power Plant (RTTP), Kadapa, Andhra Pradesh/RTPP via Kakinada-Vizag-Chennai-Krishnapatnam or any other ports

The same was forwarded by the Chief Engineer, APGENCO to seven PSUs -- PEC Limited, STC Limited, MSTC Limited, NCCF, MMTC, Coal India Limited and SCCL Limited.

The FIR alleged that during the probe, the Adani Enterprises used a proxy company to get the supply contract. It said, "NCCF received bids from six companies -- Adani Enterprises Ltd, Maheshwari Brothers Coal Limited (MBCL), Vyom Trade Links Pvt. Ltd, Swarana Projects Pvt. Ltd, Gupta Coal India Ltd and Kyori Oremen Ltd.

During investigation it was found that Gupta Coal India Ltd had quoted the NCCF margin of 11.3 percent, while the MBCL quoted the margin of 2.25 percent and rest did not quote any margin to the NCCF.

The FIR said the quotes of the Gupta Coal India Ltd, Kyori Oremen Ltd and Swarana Projects Pvt. Ltd were rejected by the NCCF as they were not found to be fulfilling the tender conditions.

"Post tender negotiation was done by senior officials of NCCF to give undue favour to Adani Enterprises Ltd despite it not qualifing the tender (terms)," the FIR said, adding instead of cancelling the bid of Adani Enterprise Ltd, senior management of NCCF conveyed the offer margin to the company through one of its representative -- Munish Sehgal, who was sitting in the NCCF head office. It is prima facie evident that when the bids were being processed at NCCF head office in Delhi, a representative of Adani Enterprises Ltd. was informed regarding their imminent rejection due to non-submission of NCCF margin and also that MBCL was eligible bidder quoted 2.25 percent margin," it alleged.

The CBI in its FIR, further alleged that Adani Enterprises Ltd. had given an unsecured loan of Rs 16.81 crore to Vyom Trade Links Ltd in 2008-09. "And further it was revealed that the bank guarantees of the Adani Enterprises Ltd. and Vyom Trade Links Ltd. were issues by the same branch of the State Bank of India and at the same time," it said.

"It was clear that Adani Enterprises Ltd. presented Vyom Trade Links Ltd. as a proxy company in this particular tender and Vyom Trade Links Ltd. later withdrew its offer on flimsy ground," the CBI FIR said.

"The aforesaid acts of commissions and omissions on the part of the senior management of the NCCF disclose that during their tenure, they acted in a manner unbecoming of public servants and committed irregularities by way of manipulation in the selection of bidders, thereby giving undue favours to Adani Enterprises Ltd. in award of work for supply of coal to APGENCO despite its disqualification," it added.

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