A new study by the Imperial College London has shown how CMEs could be more extreme than previously thought when two events follow each other.
CMEs can be catastrophic, causing power blackouts that would disable anything plugged into a socket and damage transformers that could take years to repair. Accurate monitoring and predictions are, therefore, essential to minimizing damage.
When they reach Earth, these solar storms trigger amazing auroral displays and disrupt power grids, satellites, and communications.
Coronal Mass Ejections (CMEs) are large expulsions of plasma and magnetic fields from the Sun’s corona.
They can eject billions of tons of coronal material and carry an embedded magnetic field (frozen in flux) stronger than the background solar wind interplanetary magnetic field (IMF) strength.
A tenth of all patients infected with the coronavirus disease (Covid-19) become “superspreaders” and account for 60% of new infections, while 70% of infected patients do not pass the disease to anyone else, shows a study on transmission patterns of Sars-CoV-2.
The contact tracing study looked at disease transmission patterns in at least 575,000 people who were exposed to nearly 85,000 confirmed cases of Covid-19 in two Indian states — Andhra Pradesh and Tamil Nadu.
The studyalso found that the median hospital stay before death due to the Covid-19 in the two states was around five days, compared to 13 days in the United States.
The southwest monsoon this year has ended with an 8.7% surplus, surpassing estimates by the India Meteorological Department (IMD).
This was also the first time since 2010 that India has got more than 100% of its long period average (LPA), of 88 cm, in consecutive years. Last year India saw record rainfall of 110% of the LPA, the highest in a quarter century.
The heavy rains this year have been due to several long-lasting low-pressure systems in the Bay of Bengal that fuelled heavy rains over large swathes of India in August.
The monsoon has started to withdraw from northern India and is expected to do so until the north-eastern monsoon sets in by mid October.
Pakistan Prime Minister Imran Khan has asked relevant authorities to take steps to bring back PML-N supremo Nawaz Sharif from London, to face corruption cases pending against him in various Pakistani courts.
The government had earlier sent a request to the British government for the Pakistan Muslim League-Nawaz (PML-N) leader's repatriation.
On September 15, the Islamabad High Court issued non-bailable arrest warrants for Sharif who failed to surrender before it despite clear warning by the bench.
The three-time premier, his daughter Maryam and son-in-law Muhammad Safdar were convicted in the Avenfield properties case on July 6, 2018. Sharif was also sentenced to seven years in the Al-Azizia Steel Mills case in December 2018.
After a five-month battle with leukemia, the first known person to be cured of HIV, Timothy Ray Brown, has died of cancer. He was also known as "the Berlin patient”.
Brown was considered cured of his HIV infection in 2008. In the year prior, Brown received a bone marrow transplant in Berlin, Germany, to treat a separate disease he had been diagnosed with: acute myeloid leukemia (AML).
The bone marrow he received came from a donor whose genes carried a rare mutation that made the donor naturally resistant to HIV, known as CCR5-delta 32, which was transferred on to Brown.