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एक क्वासर A Quasar

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By Er. Alok Kumar


एक क्वासर A Quasar
 
खगोल विज्ञान में उपयोग की जाने वाली दूरबीनों के माध्यम से चमकीले तारे, नीहारिकाएँ या आकाशगंगाएँ देखी जा सकती हैं। लेकिन रेडियो टेलीस्कोप (दूरबीन) का उपयोग उन रेडियो तरंगों को पकड़ने के लिए किया जाता है जो मानव आंखों के लिए अदृश्य हैं। जिसके द्वारा किसी स्थानिक वस्तु द्वारा उत्सर्जित तरंगों का अध्ययन किया जाता है।
अंतरिक्ष में ऐसी कई जगहें खोजी जा चुकी हैं। जहां से केवल रेडियो तरंगें आती हैं लेकिन प्रकाश न होने के कारण उन्हें दूरबीन से आंखों से नहीं देखा जा सकता। ऐसी चीजों को 'क्वासर' (कौसी-स्टेलर रेडियो सोर्सेज (क्वासर)) कहा जाता है।
आगे के शोध के बाद यह पाया गया कि इन रेडियो स्रोतों वाले तारे हमारी आकाशगंगा में नहीं हैं बल्कि इतने दूर हैं कि केवल बहुत दूर की आकाशगंगाओं को ही पाया जा सकता है। अब तक के शोध से पता चला है कि ये क्वासर एक विशाल आकाशगंगा में स्थित हैं, संभवतः उस आकाशगंगा में एक सुपरमैसिव ब्लैक होल के कारण, जो बड़े पैमाने पर चुंबकीय उतार-चढ़ाव का कारण बन रहा है।
ये क्वासर आकाशगंगाओं के निर्माण के प्रारंभिक चरण के दौरान बने पाए गए हैं। हालाँकि, क्वासर कैसे बनते हैं यह अभी तक ज्ञात नहीं है।
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