Indian researchers spot rare super-luminous supernova shining with borrowed energy source

A deep study of such ancient spatial objects can help probe the mysteries of the early universe, the Department of Science and Technology says

Indian researchers spot rare super-luminous supernova shining with borrowed energy source

Photo for representation only

New Delhi, July 10

An extremely bright, hydrogen-deficient, fast-evolving supernova that shines with the energy borrowed from an exotic type of neutron star with an ultra-powerful magnetic field has been spotted by Indian researchers.

A deep study of such ancient spatial objects can help probe the mysteries of the early universe, the Department of Science and Technology (DST) said.

Supernovae (SNe) are highly energetic explosions in the universe releasing an enormous amount of energy. Such types of supernovae called SuperLuminous Supernova (SLSNe) are very rare.

This is because they generally originated from very massive stars (minimum mass limit is more than 25 times that of the sun), and the number distribution of such massive stars in our galaxy or in nearby galaxies is sparse. Among them, SLSNe-I has been counted to about 150 entities spectroscopically confirmed so far, the DST said.

These ancient objects are among the least understood SNe because their underlying sources are unclear, and their extremely high peak luminosity is unexplained, it said.

The SN 2020ank, first discovered by the Zwicky Transient Facility on January 19, 2020, was studied by scientists from Aryabhatta Research Institute of Observational Sciences (ARIES) Nainital, a research institute under the Department of Science and Technology (DST), from February 2020 and then through the coronavirus lockdown phase of March and April, the DST said.

The apparent look of the SN was very similar to other objects in the field. However, once the brightness was estimated, it turned out as a very blue object reflecting its brighter character, it said.

The team observed it using special arrangements at India's recently commissioned Devasthal Optical Telescope (DOT-3.6m) along with two other Indian telescopes: Sampurnanand Telescope-1.04m and Himalayan Chandra Telescope-2.0m, it said.

They found that the outer layers of the onion structured supernovae had been peeled off, and the core was shining with a borrowed energy source, it added.

The study led by Amit Kumar, a PhD student working under SB Pandey, and published in the Monthly Notice of the Royal Astronomical Society, suggested a possibly powering source from an exotic type of neutron star with an ultra-powerful magnetic field (magnetar), the DST said.

Deeper investigations could explore the underlying physical mechanisms, possible progenitors, and environments hosting such rare explosions and their possible associations with other energetic explosions like Gamma-ray bursts (GRBs) and Fast Radio Bursts (FRBs), the DST said. PTI

Tribune Shorts

Top Stories

Ellenabad bypoll to be a litmus test for 3 main stakeholders in Haryana politics

Ellenabad bypoll to be a litmus test for 3 main stakeholders in Haryana politics

The by-election was necessitated after INLD leader Abhay Sin...

At 18,795, India records lowest Covid cases in almost 7 months

At 18,795, India records lowest Covid cases in almost 7 months

179 more deaths reported, lowest in almost 6 months

Top US diplomat to travel to India on October 6

Top US diplomat to travel to India on October 6

Deputy Secretary of State Wendy R Sherman will travel to New...

Pakistani terrorist killed, another captured in J-K's Uri sector

Pakistani terrorist killed, another captured in J-K's Uri sector

Captured terrorist is part of a recent infiltration bid in U...

Cities

View All