【摘要】：中子星內(nèi)部的致密電子是高度簡并的相對論氣體,其輸運(yùn)性質(zhì)與中子星磁或熱的觀測現(xiàn)象密切相關(guān),被認(rèn)為是中子星磁場的主要載體.外磁場中電子的朗道能級是分立的且高度簡并的,與無外場時的能量差決定了系統(tǒng)的磁化程度,用量子統(tǒng)計(jì)的方法可計(jì)算理想相對論電子氣體的磁化率.結(jié)果表明弱場條件下的磁化率在數(shù)量級上接近白矮星的10~(-3).強(qiáng)磁場下的磁化呈現(xiàn)出類似在某些低溫金屬中出現(xiàn)的de Haas-van Alphen震蕩效應(yīng),高次諧頻的震蕩幅度有可能超出臨界磁化時的磁化率.表明中子星內(nèi)部有可能存在非穩(wěn)定的磁化過程,發(fā)生類似氣液轉(zhuǎn)化的一級相變過程,出現(xiàn)兩種磁化共存的穩(wěn)定態(tài)或過冷磁化的亞穩(wěn)態(tài)(若不同磁化態(tài)間存在表面能).從亞穩(wěn)態(tài)向穩(wěn)定態(tài)的突然轉(zhuǎn)化可能與磁星的輻射有關(guān),可以解釋在磁星巨閃過程中觀測到的額外輻射問題.
[Abstract]:The dense electrons in a neutron star are highly degenerate relativistic gases whose transport properties are closely related to the observation of the magnetic or thermal properties of the neutron star and are considered to be the main carrier of the neutron star magnetic field. The Landau energy levels of electrons in an external magnetic field are discrete and highly degenerate. The magnetic susceptibility of the ideal relativistic electron gas can be calculated by quantum statistical method. The results show that the magnetic susceptibility in the weak field is close to that of the white dwarf in the order of magnitude 10 ~ (-3). The magnetization under high magnetic field is similar to the de Haas-van Alphen oscillation effect in some low temperature metals, and the oscillation amplitude of high order harmonic frequency may exceed the magnetic susceptibility of critical magnetization. It is suggested that there may be an unstable magnetization process in the neutron star, a first-order phase transition process similar to the gas-liquid transformation, two stable magnetization coexisting states or metastable metastases of undercooled magnetization (if there is surface energy between different magnetized states). The sudden transition from metastable to stable state may be related to the radiation of magnetic star, which can explain the problem of extra radiation observed in the process of giant flash of magnetic star.
【作者單位】： 新疆大學(xué)物理科學(xué)與技術(shù)學(xué)院;
【基金】：國家自然科學(xué)基金(批準(zhǔn)號:10963003,10763001,11063002) 新疆自然科學(xué)基金(批準(zhǔn)號:2009211B01,2010211B05) 霍英東基金(批準(zhǔn)號:121107) 新疆大學(xué)博士啟動基金(批準(zhǔn)號:BS110108)資助的課題~~
【分類號】：P145.6

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1 Oliver De Peyer,郝建綱;拖動時空[J];世界科學(xué);2000年12期

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5 趙崢;;《相對論、宇宙與時空》連載⑥——恒星演化的歸宿(白矮星、中子星和黑洞)[J];大學(xué)物理;2009年06期

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本文編號：2318919