发表机构
Institute of Fundamental Physics and Quantum Technology, & School of Physical Science and Technology, Ningbo University; Zhejiang Key Laboratory of Extreme Universe, & BINGO Center, Ningbo University; School of Physics, & Center for High Energy Physics, Peking University（宁波大学基础物理与量子技术学院、物理科学与技术学院; 宁波大学极端宇宙浙江省重点实验室、BINGO中心; 北京大学物理学院、高能物理中心）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
提出稠密转储编解码器（DDC）压缩GRMHD时间序列，实现误差可控、随机访问，档案缩小约10倍，并集成到慢光辐射转移中，将图像误差降低54-79%，支持高节奏计算。
AI 中文摘要
黑洞电影为研究吸积等离子体的时间演化提供了独特场所。使用慢光辐射转移模拟这种演化需要间隔紧密的模拟输出，因为当光穿过等离子体时等离子体在变化。完整保存这些输出代价高昂，而稀疏采样则会引入时间插值误差。我们提出了稠密转储编解码器（DDC），一种用于稠密GRMHD时间序列的压缩方法。DDC存储精确的锚定状态并紧凑地表示中间演化过程，同时允许直接访问选定的时间和变量。应用于八个生产序列，涵盖多个黑洞自旋的SANE和MAD模拟，输出为0.1M，DDC档案比原始稠密数据小约10倍，甚至比原始0.5M输出的总和还小约50%。我们进一步将原生DDC读取器集成到偏振慢光辐射转移中。在86、230和345 GHz的测试表明，相对于使用原始0.5M输入的慢光计算，DDC可将聚合斯托克斯图像误差降低54-79%。这些结果表明，DDC能够实现高节奏的慢光计算，而无需以原始形式保存每个稠密GRMHD状态的过高成本。
英文摘要
Black-hole movies provide a unique venue to study the time evolution of accreting plasma. Modeling this evolution with slow-light radiative transfer requires closely spaced simulation outputs, because the plasma changes as light propagates through it. Saving these outputs in full is costly, whereas sparse sampling introduces time-interpolation errors. We present the Dense Dump Codec (DDC), a compression method for dense GRMHD time series. DDC stores exact anchor states and compactly represents the intermediate evolution, while allowing direct access to selected times and variables. Applied to eight production sequences spanning SANE and MAD simulations at several black-hole spins with 0.1M output, DDC archives are about 10 times smaller than the original dense data and even about 50% smaller than the original 0.5M output in aggregate. We further integrate a native DDC reader into polarized slow-light radiative transfer. Tests at 86, 230, and 345 GHz show that DDC may reduce aggregate Stokes-image errors by 54-79% relative to slow-light calculations using original 0.5M input. These results indicate that DDC enables high-cadence slow-light calculations without the prohibitive cost of saving every dense GRMHD state in its original form.
Comments13 pages, 5 figures, 4 Tables
