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जी एम आर टी द्वारे मिलिसेकंद स्पंदकाचा दशकभरातील अभ्यास

नॅशनल सेंटर फॉर रेडिओ अॅस्ट्रोफफजिक्स (NCRA), पुणे येथील शाश्त्रज्ञांच्या गटाने देशातील खोडदस्तिथ मीटर तरंगलांबीची महाकाय रेडिओ दुबीण (जीएमआरटी) आणि ग्रीन बँक टेलीस्ट्कोप (GBT) युनायटेड स्टेट्स मिलिसेकंद स्पंदकाचा (MSP) J1544+4937 चा दशकभर दीर्घकालीन अभ्यास केला.

A Decade long timing study of a millisecond Pulsar using the GMRT

A group of scientists at the National Centre for Radio Astrophysics (NCRA), Pune conducted a decade long term timing study of a galactic millisecond pulsar (MSP) J1544+4937 with the Giant Metrewave Radio Telescope (GMRT) in India and Green Bank Telescope (GBT) in the United States. Sangita Kumari, a PhD student at NCRA under the guidance of Dr. Bhaswati Bhattacharyya carried out this longest-duration timing study of a galactic field MSP with the GMRT using the observations at multiple frequencies.

Record-breaking detection of radio signal from atomic hydrogen in extremely distant galaxy using GMRT

Astronomers from McGill University in Canada and the Indian Institute of Science (IISc) in Bengaluru have used data from the Giant Metrewave Radio Telescope (GMRT) in Pune to detect a radio signal originating from atomic hydrogen in an extremely distant galaxy. The astronomical distance over which such a signal has been picked up is the largest so far by a large margin. This is also the first confirmed detection of strong lensing of 21 cm emission from a galaxy.

RAD@home या सिटीझन शास्त्राद्यांद्वारे विलक्षण कृष्णविवर असणाऱ्या दीर्घिकेच्या शोध

आनंद होता यांच्या नेतृत्वाखालील एका समुहाने जीएमआरटी सह अनेक आंतरराष्ट्रीय दुर्बिणीचा वापर करुन एक दुर्मीळ खगोलशात्रीय घटनेचा शोध लावला आहे.

RAD@home Citizen scientists discover a monster blackhole spewing fire at another galaxy

A team of scientists, led by Ananda Hota have discovered an extremely rare case of a monster black hole spewing a fiery jet at another galaxy, using GMRT and several other international telescopes. Such radio jets are almost every time two-sided, but in this case, the jet appears one- sided, which is puzzling. It is widely believed that winds and jets are also responsible for suppressing the formation of new stars in galaxies. This new discovery (RAD12) by the RAD@home Citizen Science Research Collaboratory ( #RADatHomeIndia ) will be an opportunity in understanding this process of suppression of star formation and a demonstration of direct public participation in research.

जायंट मिटरवेव्ह रेडिओ टेलिस्कोप (GMRT) द्वारे “GMRT Cold-HI AT z≈1” (GMRT-CATz1)” सर्वेक्षण

पुण्यातील नॅशनल सेंटर फॉर रेडिओ ऍस्ट्रोफिजिक्स (NCRA-TIFR) च्या खगोल शास्त्रज्ञांच्या समूहाने सुरवातीच्या विश्वातील आकाशगांगेतील हायड्रोजन वायू आणि ताऱ्यांचे प्रमाण मोजन्यासाठी (GMRT) चा वापर केला आहे. त्यांचे परिणाम असे दर्शवतात की नऊ अब्ज वर्षपूर्वि तारा निर्मिति करणाऱ्या आकाशगंगा प्रामुख्याने तटस्थ हायड्रोजन वायुपासन बनलेल्या होत्या.

The Giant Metrewave Radio Telescope Cold-HI GMRT-CATz1 Survey

A team of astronomers from the National Centre for Radio Astrophysics (NCRA-TIFR) in Pune has used the Giant Metrewave Radio Telescope (GMRT) to measure the relative amounts of hydrogen gas and stars in galaxies in the early Universe. Their results show that star-forming galaxies nine billion years ago were primarily made up of neutral hydrogen gas.

जीएमआरटी ने शोधले तारकीय स्मशानभूमिजवळ हळूहळू फिरणारे न्यूट्रॉन तारे

जीएमआरटी हाय ररझोल्यशू न सदनन स्काय (जीएचआरएसएस) सर्वक्षे णाद्वारे एनसीआरएच्या शास्रज्ाांच्या चमनू े पर्वू ी शोधलेल्या पल्सार डटे ामधनू च दोन नर्वीन स्लो पल्सार शोधले आहेत.

जी एम आर टी ने रेडिओ आकाशगंगेतील 'वैश्विक-टँगो' ही अत्यंत दुर्मिळ घटना शोधली

भारतीय रेडिओ खगोलशात्रज्ञांच्या नेतृत्वाखालील आंतरराष्ट्रीय संघाने अत्यंत दुर्मिळ शोध लावला आहे. ज्यामध्ये दोन रेडिओ आकाशगंगांनी टँगो नृत्याचा अभिनय करून वैश्विक देखावाच निर्माण केला आहे. हा शोध नुकत्याच अप्ग्रेड केलेल्या जायांट मीटरवेव्ह रेडिओ टेलिस्कोप (uGMRT) द्वारे लावला गेला आहे.

The upgraded GMRT opens a new frontier by enabling capabilities for international VLBI observations

The upgraded Giant Metrewave Radio Telescope (GMRT) achieved a new milestone in February this year. In two coordinated experiments conducted along with some telescopes of the European VLBI Network (EVN), Very Long Baseline Interferometry (VLBI) fringes with the GMRT were detected successfully. Five telescopes participated in this multi-country experiment on 14-Feb-2022: GMRT, Medicina and Noto (Italy), Westerbork (the Netherlands) and Zelenchukskaya (Russia).

The uGMRT confirms sharp reduction of atomic hydrogen in early universe

A team of astronomers from the National Centre for Radio Astrophysics (NCRA-TIFR) in Pune has used the upgraded Giant Metrewave Radio Telescope (GMRT) to find evidence for a sharp reduction in the amount of atomic hydrogen gas in galaxies over a 1-billion-year interval, from 9 billion years ago to 8 billion years ago. This detection of a rapid change in the atomic gas mass of galaxies in the early Universe helps to solve a long-standing open problem regarding the evolution of star-formation activity in the Universe. The research has been published in the June 1 issue of The Astrophysical Journal Letters.

GMRT discovers several rare class of radio stars

A group of astronomers led by astronomers at NCRA, Pune, has discovered eight stars belonging to a rare class of stars called ‘MRPs’, or, Main-sequence Radio Pulse emitters, using the Giant Metrewave Radio Telescope (GMRT), located near Pune.

The uGMRT confirms an unexpected event in millisecond pulsars - the cosmic clocks.

A group of nearly 40 astronomers, under the banner of Indian Pulsar Timing Array (InPTA), have provided first time a clear evidence of unexpected changes in a milli-second radio pulsar using the upgraded Giant Metrewave Radio Telescope (uGMRT). Millisecond pulsars are exotic objects in the sky and are used in efforts for detecting ultra-low frequency gravitational waves due to their extreme stable behaviour. These changes have attracted the attention of astronomers across the globe because the millisecond pulsars are not expected to show such behaviour and this star-clock may not be good enough to search for gravitational waves.

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