新的射電天文學(xué)調(diào)查同行通過宇宙塵埃調(diào)查銀河系
指南者留學(xué)
2022-07-13 16:33:41
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<div class="image-uploaded gallery old-record-id-doxcniC2EQci8okis0gMSv4mevf" style="text-align: justify;" data-type="image" data-ace-gallery-json="{"items":[{"uuid":"da55a4d4-4872-4a9c-891b-5e40aa8d5d77","height":480,"width":640,"currHeight":480,"currWidth":640,"natrualHeight":480,"natrualWidth":640,"pluginName":"imageUpload","scale":1,"src":"https%3A%2F%2Finternal-api-drive-stream.feishu.cn%2Fspace%2Fapi%2Fbox%2Fstream%2Fdownload%2Fall%2Fboxcnd8wShzjtA1qIAPnwJlwJql%2F%3Fmount_node_token%3DdoxcniC2EQci8okis0gMSv4mevf%26mount_point%3Ddocx_image","file_token":"boxcnd8wShzjtA1qIAPnwJlwJql","image_type":"image/png","size":392974,"comments":[]}]}"><span class="p"><img src="https://info.compassedu.hk/sucai/content/1658910709551/1658910709551.png" width="640" height="480" /></span></div>
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<div class="ace-line ace-line old-record-id-doxcnIwm84mEU6IUEOyAoGc34pb" style="text-align: justify;"><span class="p">一個(gè)龐大的天文學(xué)項(xiàng)目的第一批結(jié)果已經(jīng)宣布,該項(xiàng)目旨在繪制出我們138億年前的宇宙的起源。</span></div>
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<div class="ace-line ace-line old-record-id-doxcnsYMkScwOymK42dWIk757Qe" style="text-align: justify;"><span class="p">一個(gè)由來自世界各地的天文學(xué)家組成的國際團(tuán)隊(duì)參與了名為COMAP(CO Mapping Array Project)的項(xiàng)目,該項(xiàng)目將為我們帶來對(duì)這個(gè)星系組裝時(shí)代的新一瞥,幫助回答有關(guān)真正導(dǎo)致宇宙恒星產(chǎn)量迅速增加的問題。</span></div>
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<div class="ace-line ace-line old-record-id-doxcn8kGi0sKA64ASgmK9CSBpkb" style="text-align: justify;"><span class="p">由加州理工學(xué)院領(lǐng)導(dǎo),曼徹斯特大學(xué)的研究人員參與,該項(xiàng)目的第一批科學(xué)成果剛剛在《天體物理學(xué)雜志》上發(fā)表了七篇論文。根據(jù)在計(jì)劃的五年調(diào)查中進(jìn)行的一年的觀測(cè),COMAP對(duì)所研究的星系中必須存在多少冷氣體設(shè)定了上限,包括那些通常太微弱和塵埃而看不見的星系。</span></div>
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<div class="ace-line ace-line old-record-id-doxcnq8eOo0I6CiSWGATVlCx0jb" style="text-align: justify;"><span class="p">雖然該項(xiàng)目尚未直接探測(cè)到一氧化碳信號(hào),但這些早期結(jié)果表明,在最初的五年調(diào)查結(jié)束時(shí),它有望做到這一點(diǎn),并最終描繪出迄今為止宇宙恒星形成歷史的最全面的畫面。</span></div>
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<div class="ace-line ace-line old-record-id-doxcnccoQeYo2kkkui6T4wJTwYc" style="text-align: justify;"><span class="p">除了望遠(yuǎn)鏡的主要宇宙學(xué)目標(biāo)外,曼徹斯特的科學(xué)家們還專注于使用望遠(yuǎn)鏡制作銀河系的新地圖。</span></div>
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<div class="ace-line ace-line old-record-id-doxcnwYyICQOMM4kWaEZFGWcDad" style="text-align: justify;"><span class="p">COMAP銀河平面測(cè)量以4.5角分的分辨率繪制了銀河系,大約比普朗克高出七倍, 從而改進(jìn)了WMAP和普朗克太空望遠(yuǎn)鏡的工作。</span></div>
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<div class="ace-line ace-line old-record-id-doxcnMUimQCGsuswC89Xh6vACAe" style="text-align: justify;"><span class="p">曼徹斯特大學(xué)COMAP團(tuán)隊(duì)位于Jodrell Bank Centre for Astrophysics,由Clive Dickinson教授領(lǐng)導(dǎo)。Jodrell Bank是射電天文學(xué)相關(guān)研究和技術(shù)開發(fā)的全球領(lǐng)導(dǎo)者。</span></div>
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<div class="image-uploaded gallery old-record-id-doxcnkWQ022casIcOmYICUp3Gwh" style="text-align: justify;" data-type="image" data-ace-gallery-json="{"items":[{"uuid":"837163a3-fb29-40c0-8673-3763139eda62","height":220,"width":1009,"currHeight":220,"currWidth":1009,"natrualHeight":220,"natrualWidth":1009,"pluginName":"imageUpload","scale":1,"src":"https%3A%2F%2Finternal-api-drive-stream.feishu.cn%2Fspace%2Fapi%2Fbox%2Fstream%2Fdownload%2Fall%2FboxcnI0seQ9DktokhCbtDdenm3b%2F%3Fmount_node_token%3DdoxcnkWQ022casIcOmYICUp3Gwh%26mount_point%3Ddocx_image","file_token":"boxcnI0seQ9DktokhCbtDdenm3b","image_type":"image/png","size":146504,"comments":[]}]}"><span class="p"><img style="display: block; margin-left: auto; margin-right: auto;" src="https://info.compassedu.hk/sucai/content/1658910717821/1658910717821.png" width="807" height="176" /></span></div>
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<blockquote class=" old-record-id-doxcnOYMq6s2IYeUwojDxTZOGef" data-type="quote_container">
<div class="ace-line ace-line old-record-id-doxcncKksAysWI0Mm2fXEaOGlvg" style="text-align: justify;"><span class="h6">我們非常自豪地介紹COMAP銀河平面調(diào)查 - 這項(xiàng)調(diào)查有望在未來幾年繼續(xù)為科學(xué)界服務(wù)。以前所未有的分辨率將銀河系繪制在30GHz,除了讓我們以前所未有的方式探測(cè)銀河系平面上旋轉(zhuǎn)的塵埃顆粒的發(fā)射外,它還為我們提供了對(duì)恒星出生和死亡的見解。</span></div>
<div class="ace-line ace-line old-record-id-doxcn2sYyUO0GgQsmohsNlWx3Kh"><span class="p"><strong>——Thomas Rennie,博士生</strong></span></div>
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<div class="ace-line ace-line old-record-id-doxcnu4EOC8KaiWqELr1H66K6tz" style="text-align: justify;"><span class="p">合線30 GHz調(diào)查。這意味著天文學(xué)家不僅能夠繪制銀河系如何出現(xiàn)的地圖,而且還可以制作穿過銀河系的氫的特定地圖。</span></div>
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<div class="ace-line ace-line old-record-id-doxcnEMSAQg2Y442sq0yuWMiwKc" style="text-align: justify;"><span class="p">選擇30GHz進(jìn)行調(diào)查具有廣泛的用途;從了解銀河Hii區(qū)域恒星的誕生(表現(xiàn)為氫氣氣泡)到檢查超新星殘骸中死亡恒星的爆炸殘骸。最后,天文學(xué)家甚至能夠通過繪制神秘的異常微波發(fā)射來測(cè)量旋轉(zhuǎn)塵埃發(fā)射的指紋 - 被認(rèn)為來自旋轉(zhuǎn)的塵埃顆粒。 該項(xiàng)目已獲得凱克空間研究所(用于關(guān)鍵的早期技術(shù)開發(fā))和美國國家科學(xué)基金會(huì)(NSF)的資助,用于建造探路者并進(jìn)行調(diào)查。該項(xiàng)目是加州理工學(xué)院,加拿大理論天體物理研究所,噴氣推進(jìn)實(shí)驗(yàn)室,紐約大學(xué),普林斯頓大學(xué),斯坦福大學(xué),日內(nèi)瓦大學(xué),奧斯陸大學(xué),曼徹斯特大學(xué),馬里蘭大學(xué)和邁阿密大學(xué)之間的合作。</span></div>
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