论文标题

SDSS J014124+010306中的中央潮汐破坏事件的新候选人,$ z = 1.06 $

A new candidate for central tidal disruption event in SDSS J014124+010306 with broad Mg~{\sc ii} line at $z=1.06$

论文作者

XueGuang, Zhang

论文摘要

在信中,在SDSS J014124+010306(= SDSS J0141)中报告了一个新的中央潮汐破坏事件(TDE)的新候选人(TDE),并在RedShift $ z = 1.06 $上,带有宽Mg〜 {\ sc ii}线。基于SDSS Stripe82数据库和PhotoBjall数据库的长期光度$ ugriz $ - ugriz $ -band变异性,首选中央tde,1.3 $ {\ rm m_ \ odot} $ main-sequinence sequinence sequinence tidence star tidally tidally tidally tidally tidally tidally central Black Hole(BH)(BH)(BH)$(BH)$(14 \ PM2) J0141。此外,已经应用了汽车工艺来确认该概率仅为0.4 \%,即SDSS J0141的长期变异性与TDE无关,而是与内在的AGN活动无关。同时,根据明显的宽Mg〜 {\ sc ii}排放线,病毒BH质量可以估计为$ 245 \ times10^6 {\ rm m_ \ odot} $ 18倍,比TDE模型大于tde-model确定的BH质量,以提供进一步的线索,以支持与SDS SDS SDS SDS SDS SSS SDS SDS SDS SSS SDS SSS相似,病毒BH质量两个大于M-Sigma关系预期BH质量。在报道的光学TDE候选物中,SDSS J0141是最高红移的候选人。字母中的结果表明,在具有宽Mg〜 {\ sc ii}线的高红移星系中检测TDE候选物应该是常见的。

In the Letter, a new candidate for central tidal disruption event (TDE) is reported in SDSS J014124+010306 (=SDSS J0141) with broad Mg~{\sc ii} line at redshift $z=1.06$. Based on long-term photometric $ugriz$-band variabilities from SDSS Stripe82 Database and PHOTOOBJALL database, a central TDE is preferred with a 1.3${\rm M_\odot}$ main-sequence star tidally disrupted by central black hole (BH) of $(14\pm2)\times10^6{\rm M_\odot}$ in SDSS J0141. Moreover, CAR process has been applied to confirm that the probability is only about 0.4\% that the long-term variabilities in SDSS J0141 are not related to TDE but from intrinsic AGN activities. Meanwhile, based on the apparent broad Mg~{\sc ii} emission lines, virial BH mass can be estimated as $245\times10^6{\rm M_\odot}$, 18 times larger than the TDE-model determined BH mass, providing further clues to support a central TDE in SDSS J0141, similar as the case in the TDE candidate SDSS J0159 with virial BH mass two magnitudes larger than M-sigma relation expected BH mass. Among the reported optical TDE candidates, SDSS J0141 is the candidate at the highest redshift. The results in the Letter indicate it should be common to detect TDE candidates in high redshift galaxies with broad Mg~{\sc ii} lines.

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