C/2013 V1（Boattini）和290 P/Jager彗星近日点前后的成像偏振测量
Imaging polarimetry of comets C/2013 V1 (Boattini) and 290P/Jager before and after perihelion
摘要：
我们报告的结果从光学偏振研究的光散射彗星C/2013 V1（Boattini）和290 P/Jager在较低的相位角。2013年12月4日和5日以及2014年4月24日，在印度奈尼塔尔附近的Aryabhatta观测科学研究所使用1.04米Sampurnanand望远镜，使用R测光带（$λ$ = 630 nm，$Δ$ $λ$ = 120 nm）对两颗彗星进行了偏振观测。我们涵盖了彗星C/2013 V1（Boattini）和290 P/Jager在两个相位角$\sim$ 13 $^\circ$和27 $^\circ$通过近日点前后的观测结果。偏振度从（$-1.4$ $\pm 0.3$）C/2013 V1彗星（+2.8% $\pm 0.5$）（Boattini）和（$-1.6$ $\pm 0.5$）（+2.5 $\pm 0.5$）%，彗星290 P/Jager，相位角$\sim$ 13 $^\circ$和$^\circ$ 27例。彗星尘埃的物理性质的变化正在从两个观测期间获得的偏振图中得到很好的研究。结果发现，孔径偏振值与其他彗星的孔径偏振值相当。在这一阶段，在太阳和反太阳方向上也观察到这两颗彗星的亮度轮廓与标准规范性质的变化，这表明影响彗星彗星的各种物理演化。
英文摘要：
We report the results obtained from the optical polarimetric study of the light scattered by comets C/2013 V1 (Boattini) and 290P/Jager at lower phase angles. The polarimetric observations of two comets have been performed with the 1.04-m Sampurnanand telescope of Aryabhatta Research Institute of observational sciencES near Nainital in India on 2013 December 4 and 5 and on 2014 April 24 using R photometric band ($λ$ = 630 nm, $Δ$$λ$ =120nm). We covered observations in both the pre and post perihelion passage of comets C/2013 V1 (Boattini) and 290P/Jager at two phase angles $\sim$ 13$^\circ$ and 27$^\circ$. The degree of polarization changes from ($-1.4$$\pm 0.3$)per cent to (+2.8$\pm 0.5$)per cent for comet C/2013 V1 (Boattini) and ($-1.6$$\pm 0.5$)per cent to (+2.5$\pm 0.5$)per cent for comet 290P/Jager at phase angles $\sim$ 13$^\circ$ and 27$^\circ$ respectively. The change in the physical properties of cometary dust is being well studied from the polarization maps obtained for both the period of observations. It is found that the aperture polarization values are comparable to those of other comets. The variation in the brightness profile of both the comets from the standard canonical nature is also being observed in both the solar and anti-solar direction during this phase which suggests the various physical evolution influencing the cometary comae.
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