论文标题

中子星 - 黑洞合并S200105AE和S200115J的光学随访

Optical follow-up of the neutron star-black hole mergers S200105ae and S200115j

论文作者

Anand, Shreya, Coughlin, Michael W., Kasliwal, Mansi M., Bulla, Mattia, Ahumada, Tomás, Carracedo, Ana Sagués, Almualla, Mouza, Andreoni, Igor, Stein, Robert, Foucart, Francois, Singer, Leo P., Sollerman, Jesper, Bellm, Eric C., Bolin, Bryce, Caballero-García, M. D., Castro-Tirado, Alberto J., Cenko, S. Bradley, De, Kishalay, Dekany, Richard G., Duev, Dmitry A., Feeney, Michael, Fremling, Christoffer, Goldstein, Daniel A., Golkhou, V. Zach, Graham, Matthew J., Guessoum, Nidhal, Hankins, Matthew J., Hu, Youdong, Kong, Albert K. H., Kool, Erik C., Kulkarni, S. R., Kumar, Harsh, Laher, Russ R., Masci, Frank J., Mróz, Przemek, Nissanke, Samaya, Porter, Michael, Reusch, Simeon, Riddle, Reed, Rosnet, Philippe, Rusholme, Ben, Serabyn, Eugene, Sánchez-Ramírez, R., Rigault, Mickael, Shupe, David L., Smith, Roger, Soumagnac, Maayane T., Walters, Richard, Valeev, Azamat F.

论文摘要

Ligo和处女座的第三次观察奔跑(O3)揭示了引力波中的第一个中子星 - 黑洞(NSBH)合并候选者。这些事件预计将合成R-Process元素,从而产生光学/接近IR“ KILONOVA”(KN)发射。 NSBH合并的关节重力波(GW)和电磁检测可用于限制密集核物质状态的方程,并独立测量宇宙的局部膨胀率。在这里,我们介绍了迄今为止检测到的S200105AE和S200115J的仅有的三个高显着性NSBH合并候选者中的两个光学随访和分析,其中Zwicky Transient设施(ZTF)。 ZTF observed $\sim$\,48\% of S200105ae and $\sim$\,22\% of S200115j's localization probabilities, with observations sensitive to KNe brighter than $-$17.5\,mag fading at 0.5\,mag/day in g- and r-bands;候选人的广泛搜索和系统随访并没有产生可行的对应。我们提出了针对NSBH系统量身定制的最先进的KN型号,这些模型对这些NSBH合并的弹出性质进行了约束。我们表明,使用$ \ rm m _ {\ rm ab} \大约22美元的深度,可在仪表级,广泛的视野调查仪器中获得,因此可以对弹出质量的强大约束,并且有可能排除低质量比率,高BH旋转,高BH旋转,高的BH和大型的中性星级Radii。

LIGO and Virgo's third observing run (O3) revealed the first neutron star-black hole (NSBH) merger candidates in gravitational waves. These events are predicted to synthesize r-process elements creating optical/near-IR "kilonova" (KN) emission. The joint gravitational-wave (GW) and electromagnetic detection of an NSBH merger could be used to constrain the equation of state of dense nuclear matter, and independently measure the local expansion rate of the universe. Here, we present the optical follow-up and analysis of two of the only three high-significance NSBH merger candidates detected to date, S200105ae and S200115j, with the Zwicky Transient Facility (ZTF). ZTF observed $\sim$\,48\% of S200105ae and $\sim$\,22\% of S200115j's localization probabilities, with observations sensitive to KNe brighter than $-$17.5\,mag fading at 0.5\,mag/day in g- and r-bands; extensive searches and systematic follow-up of candidates did not yield a viable counterpart. We present state-of-the-art KN models tailored to NSBH systems that place constraints on the ejecta properties of these NSBH mergers. We show that with depths of $\rm m_{\rm AB}\approx 22$ mag, attainable in meter-class, wide field-of-view survey instruments, strong constraints on ejecta mass are possible, with the potential to rule out low mass ratios, high BH spins, and large neutron star radii.

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