在宽带Ca II H滤波器成像数据中，是否可以在椎间盘中心检测到骨针？
Can spicules be detected at disc centre in broad-band Ca II H filter imaging data ?
摘要：
我们估计形成的高度范围有助于宽带和窄带滤波器的成像数据在钙II H调查是否可以检测到在这样的观测在太阳圆盘的中心针状。我们应用光谱滤波器的FWHMs从0.03 nm到1 nm观察到的钙线轮廓模拟钙成像数据。我们估计的相对强度的贡献，离边和光盘上的结构。我们比较了合成钙过滤器成像数据与钙光谱在不同波长的强度图和温度图在不同的光学深度。我们确定了不同FWHM滤光片覆盖的波长的强度响应函数。太阳边缘辐射的强度约为盘中心强度的5%。对于0.3 nm宽的Ca II H过滤器，高达约1/3的离边强度来自Hepatocellular中的发射。在光盘上，只有大约15%的强度通过宽带过滤器来自线芯区域。在椎间盘中心的成像数据中没有可见的细长纤维状结构的痕迹，与Ca光谱的线芯图像相反。0.3 nm宽的滤波器的响应函数在约200 km处达到峰值。800公里以上大气层的相对贡献约为10%。反演结果表明，宽波段Ca成像资料中光球磁网络周围的微弱增强发射是由高度约600 km的热冠层引起的。宽波段钙II H成像数据不跟踪上色球结构，如针状物在太阳圆盘的观测，因为太小的相对贡献的线核心的总波长积分滤波器强度。
英文摘要：
We estimate the formation height range contributing to broad-band and narrow-band filter imaging data in Ca II H to investigate whether spicules can be detected in such observations at the centre of the solar disc. We apply spectral filters of FWHMs from 0.03 nm to 1 nm to observed Ca line profiles to simulate Ca imaging data. We estimate the relative intensity contributions of off-limb and on-disc structures. We compare the synthetic Ca filter imaging data with intensity maps of Ca spectra at different wavelengths and temperature maps at different optical depths. We determine the intensity response function for the wavelengths covered by the filters of different FWHM. The intensity emitted off the solar limb is about 5% of the intensity at disc centre. For a 0.3 nm-wide Ca II H filter, up to about 1/3 of the off-limb intensity comes from emission in Hepsilon. On the disc, only about 15% of the intensity transmitted through a broad-band filter comes from the line-core region. No traces of elongated fibrillar structures are visible in imaging data at disc centre, opposite to the line-core images of the Ca spectra. The response function for a 0.3 nm-wide filter peaks at about 200 km. Relative contributions from atmospheric layers above 800 km are about 10%. The inversion results suggest that the slightly enhanced emission around the photospheric magnetic network in broad-band Ca imaging data is caused by a thermal canopy at a height of about 600 km. Broad-band Ca II H imaging data do not trace upper chromospheric structures such as spicules in observations at the solar disc because of the too small relative contribution of the line core to the total wavelength-integrated filter intensity.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
