Glossary term: पल्सार
Description: पल्सार एक तेजी से घूमने वाला न्यूट्रॉन तारा है जिसका मजबूत चुंबकीय क्षेत्र विपरीत दिशाओं में दो तीव्र विकिरण उत्पन्न करता है। जैसे ही पल्सार हमारी दृष्टि रेखा से होकर गुजरता है, इस विकिरण को रेडियो दूरबीनों द्वारा एक संक्षिप्त पल्स के रूप में पता लगाया जा सकता है। पल्सार हमारे सूर्य से लगभग डेढ़ गुना द्रव्यमान के साथ लगभग 10-20 किलोमीटर दूर हैं। वे प्रति सेकंड लगभग एक से सौ बार घूमते हैं और बहुत सटीक खगोलीय घड़ियों के रूप में काम कर सकते हैं। कुछ पल्सार को गामा किरणों या एक्स-रे के स्रोत के रूप में पाया गया है। हमारी आकाशगंगा में 3000 से अधिक पल्सार का पता लगाया गया है। आकाशगंगा के बाहर मैगेलैनिक क्लाउड में भी लगभग 30 पल्सार का पता लगाया गया है। पल्सार सामान्य सापेक्षता के परीक्षण के रूप में, इंटरस्टेलर माध्यम की जांच के लिए और संभावित रूप से ब्लैक होल विलय से गुरुत्वाकर्षण तरंगों का पता लगाने के लिए उपयोगी होते हैं।
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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".
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In Other Languages
- अरबी: النجم النابض
- जर्मन: Pulsar
- अंग्रेज़ी : Pulsar
- फ्रेंच: Pulsar
- इटैलियन: Pulsar
- जपानी: パルサー (external link)
- मराठी: पल्सार
- ब्रजिलियन पुर्तगाली: Pulsar
- सरल चीनी: 脉冲星
- पारम्परिक चीनी: 脈衝星
Related Media
The Crab Pulsar
Caption: At the heart of the Crab Nebula, situated approximately 6,500 light-years away in the constellation of Taurus, lies the Crab Nebula Pulsar. This is remnant of a massive star that exploded at the end of its life. This happened several thousand years ago but the light from this explosion only reached the Earth in the year 1054. This celestial event was viewed by people across the world with many different societies noting it in their records.
The Crab Nebula Pulsar rotates about 30 times per second and emits light in many different wavelengths, including the visible spectrum. It is roughly one and a half times the mass of the sun but the force of the explosion that formed it crammed this mass into a tiny space, roughly ten kilometres in radius.
This image is a composite of several observations conducted by the Gemini North observatory in Hawaii, USA. The pulsar can be seen at the center. The observations that this image was created from were taken over a period of five years. Data from 2009 is shown in blue and data from 2014 is shown in red. Over this time material has flowed away from the pulsar resulting in this colored ripple effect. Again the colors do not show real colors in the image, the ripples show the positions of the shockwaves as they moved away from the pulsar and hit into the surrounding gas.
Credit: International Gemini Observatory/NOIRLab/NSF/AUR, Jen Miller, Travis Rector, Mahdi Zamani & Davide de Martin
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License: CC-BY-4.0 Creative Commons Attribution 4.0 International (CC BY 4.0) icons
