• 9964432222
  • Mail Us
  • Appointment
  • Locate Us
  • Chat Now
  • Courses
  • Login
  • Register
Manifest IAS
JournalsOfIndia
Manifest Learning Academy
  • Home
  • SNIPPETSfor Prelims
  • ARTICLESfor Mains
  • BROWSEBY SOURCE
  • DOWNLOADS
No Result
View All Result
  • Home
  • SNIPPETSfor Prelims
  • ARTICLESfor Mains
  • BROWSEBY SOURCE
  • DOWNLOADS
No Result
View All Result
JournalsOfIndia
No Result
View All Result
Home Science & Tech

Gamma Ray Emitting Active Galaxy

April 14, 2021
in Science & Tech
Reading Time: 3 mins read
0
Gamma Ray Emitting Active Galaxy
193
VIEWS
Share on WhatsAppShare on TelegramShare on Facebook
image_pdfMake PDF

In News: Scientists from ARIES, Nainital, Government of India, along with researchers from other institutions, have found the farthest gamma-ray emitting Narrow-Line Seyfert 1 (NSL1) galaxy known till date.

Key Finding

  • Researchers from ARIES in collaboration with researchers have been studying around 25,000 Active Galactic Nuclei (AGN) from the Sloan Digital Sky Survey (SDSS) and were able to devise a new method to find high-z NLS1 galaxies till now unknown by comparing different emission lines in their spectra. In the process, they found a high-z gamma-ray emitting NLS1 galaxy.
  • One of the largest ground-based telescopes in the world, the 8.2 m Subaru Telescope located in Hawaii, US was used to confirm the findings. 
  • Researchers confirmed that they have found a genuine NLS1 galaxy at a high redshift of 1.34, which is about 31 billion light-years away from us.
  • Researchers confirmed that the newly found farthest gamma-ray emitting NLS1 galaxy was formed when the Universe was only about 4.7 billion years old. 
  • The current age of the Universe is 13.8 billion years.
  • Research has potential for finding more gamma-ray emitting NSL1 galaxies and help understand the early Universe.
  • The research led by Dr. Suvendu Rakshit, Scientist, ARIES, in collaboration with various scientists Malte Schramm (Japan), C. S. Stalin (IIA, India), I. Tanaka (USA), Vaidehi S. Paliya (ARIES), Indrani Pal (IIA, India), Jari Kotilainen (Finland) and Jaejin Shin (South Korea) has recently been accepted for publication in the journal Monthly Notices of Royal Astronomical Society.

Active Galactic Nuclei (AGN)

  • Most  galaxies are powered by a supermassive black hole at their center. 
  • Normal black holes that form from the death of a single star are ten times the mass of the Sun.
  • Supermassive black holes are millions to billions of times the mass of the Sun.
  • These supermassive black holes found at the center of the galaxies are the reason that the compact region at the center of a galaxy has an extremely high luminosity. 
  • Bright central regions of these galaxies are called Active Galactic Nuclei (AGN). 
  • Galaxies hosting Active Galactic Nuclei (AGN) are called active galaxies.
  • Compared to normal galaxies, these active galaxies can emit up to thousands of times of energy. 
  • Emissions of active galaxies are non-stellar that are observed in the form of microwave, radio, infrared, optical, X-ray, ultra-violet, and gamma-ray wavebands.

Gamma-ray emitting Narrow-Line Seyfert 1 (NSL1) galaxies

  • Narrow-Line Seyfert 1 (NSL1) galaxies are classified as AGN. 
  • Type 1 Seyfert galaxies have narrow emission lines in their optical spectrum.
  • Earlier, the NSL1 galaxies were thought to be powered by low mass black holes and therefore were deemed very unlikely to produce relativistic jets. But proved wrong when gamma-ray emissions were detected in them.
  • As of now, dozens of NSL1 galaxies with redshifts less than one have been identified with gamma-ray emissions. But there was no method in place till now to find NSL1 galaxies with redshifts larger than one.
  • This situation changed when scientists from the Aryabhatta Research Institute of observational sciences (ARIES), ,found a genuine high-gamma ray emitting NLS1 galaxy at a high redshift of 1.34 (larger than 1).

Aryabhatta Research Institute of Observational Sciences (ARIES)

  • Established in: 1954. 
  • Autonomous institute of the Department of Science & Technology (DST), Government of India.
  • Location: It is situated at Manora Peak, in Nainital, Uttarakhand.
  • Leading research Institutes which specializes in observational Astronomy & Astrophysics and Atmospheric Sciences.
  • The main research interests of Astronomy & Astrophysics division are in solar, planetary, stellar, galactic and extragalactic astronomy including stellar variabilities, X-ray binaries, star clusters, nearby galaxies, quasars, and inherently transient events like supernovae and highly energetic gamma ray bursts.
  • The unique position of ARIES (79° East), places it at almost in the middle of 180° wide longitude band, between Canary Island (20° West) and Eastern Australia (157° East), and therefore complements observations which might not be possible from either of these two places.
image_pdfMake PDF
Source: PIB
Tags: PIBPrelims

Related Posts

Biotransformation technology

Biotransformation technology

March 28, 2023
Government launches National Rabies Control Programme (NRCP)

Government launches National Rabies Control Programme (NRCP)

March 28, 2023
ISRO’s  LVM-3 launch

ISRO’s LVM-3 launch

March 27, 2023
What is depleted uranium?

What is depleted uranium?

March 27, 2023
Candida auris

Candida auris

March 25, 2023
Asia’s largest four metre International Liquid Mirror Telescope

Asia’s largest four metre International Liquid Mirror Telescope

March 24, 2023
Ceramic radomes

Ceramic radomes

March 24, 2023
Vision document for rollout of 6G network in India

Vision document for rollout of 6G network in India

March 23, 2023
C-Veda project

C-Veda project

March 23, 2023
Laccase enzyme to degrade variety of hazardous organic dye molecules

Laccase enzyme to degrade variety of hazardous organic dye molecules

March 22, 2023
Please login to join discussion

Our Offline Classroom Student

CONGRATULATIONS TO 2021 TOPPERS !!!

Rank 171 Kumar Shivashish
Rank 250 Sahithya
Rank 263 Sumit Kumar Thakur
Rank 311 Deepak Ramachandra Shet
Rank 455 Ravinandan B M

March 2023
MTWTFSS
 12345
6789101112
13141516171819
20212223242526
2728293031 
« Feb    

Browse by Category

  • Agriculture
  • Disaster Management
  • Economy
  • Environment
  • Ethics
  • Foreign Affairs
  • Geography
  • Governance
  • History
  • Law & Policy
  • Opinion
  • People in News
  • Places in News
  • Science & Tech
  • Security
  • Society
  • Sports
  • Uncategorized

Browse by Tags

AIR All India Radio BBC Business Line Business Standard dow Down to Earth DownToEarth DTE Economic Times ET FAO Financial Express GS-1 GS-2 GS-3 GS-4 Hindustan Times IE India & the world Indian express Indiatoday India today Kurukshetra Livelihoods portal LiveMint Mains News Newspaper News Paper PIB Prelims PRS India RSTV Science Reporter Survey The Hindu The India Express The Indian Express The Print the wire Times of India TOI TOPPERS Yojana
JournalsOfIndia

Our vision is to orient the readers to grasp the facts objectively and analyse critically. In the rush of reaching first to the readers, the websites miss the balanced opinion, which is the need of the hour. We aim to reach the readers with more crispness, preciseness and relevance. We bring the articles in UPSC way for the civil services aspirants and the Wisest Way for general readers.

Categories

  • Agriculture
  • Disaster Management
  • Economy
  • Environment
  • Ethics
  • Foreign Affairs
  • Geography
  • Governance
  • History
  • Law & Policy
  • Opinion
  • People in News
  • Places in News
  • Science & Tech
  • Security
  • Society
  • Sports
  • Uncategorized

Browse by Tag

AIR All India Radio BBC Business Line Business Standard dow Down to Earth DownToEarth DTE Economic Times ET FAO Financial Express GS-1 GS-2 GS-3 GS-4 Hindustan Times IE India & the world Indian express Indiatoday India today Kurukshetra Livelihoods portal LiveMint Mains News Newspaper News Paper PIB Prelims PRS India RSTV Science Reporter Survey The Hindu The India Express The Indian Express The Print the wire Times of India TOI TOPPERS Yojana

Newsletter

The most important UPSC news and events of the day.

Get Journals daily newsletter on your inbox.

© 2020 JournalsOfIndia - A free initiative by Manifest Team.

  • Login
  • Sign Up
  • Home
  • SNIPPETS
  • ARTICLES
  • BROWSE
  • DOWNLOADS
No Result
View All Result

© 2020 JournalsOfIndia - A free initiative by Manifest Team.

Welcome Back!

Login to your account below

Forgotten Password? Sign Up

Create New Account!

Fill the forms bellow to register

All fields are required. Log In

Retrieve your password

Please enter your username or email address to reset your password.

Log In