Extreme mass loss during common envelope evolution: the origin of the double low-mass white dwarf system J2102--4145

该研究通过分析双低质量白矮星系统 J2102-4145 的观测特征与演化模型,证实了该系统由稳定洛希瓣溢流和共同包层演化两种不同机制形成,并发现次星极薄的氢包层对现有包层抛射理论提出了严峻挑战。

Leandro G. Althaus, Alejandro H. Corsico, Monica Zorotovic, Maja Vuckovic, Alberto Rebassa-Mansergas, Santiago Torres2026-03-10🔭 astro-ph

Ashes of FIRE: Modeling Dust Grain Size Evolution in the Local Group with FIRE

本文通过将新的离散化尘埃粒径演化模型引入 GIZMO 代码并结合 FIRE-3 反馈机制,利用理想化星系模拟揭示了 Local Group 中尘埃丰度主要由尘埃生长与破坏决定,而消光曲线斜率受凝聚作用影响,并指出模型预测的双峰粒径分布及缺乏极小碳质尘埃的现象,暗示了从预存尘埃进行“自上而下”PAH 形成的必要性。

Caleb R. Choban, Samir Salim, Dušan Kereš, Julia Roman-Duval, Karin M. Sandstrom2026-03-10🔭 astro-ph

Non-common path aberration compensation and a dark hole loop with a pyramid adaptive optics system: Application to SAXO+

本文通过端到端数值模拟研究了 SAXO+ 系统中基于金字塔波前传感器的非共路像差补偿与暗孔回路性能,发现非共路像差补偿可将残余星光降低 20 倍,而暗孔回路能将其降低 200 倍,并评估了金字塔光学增益校准在不同观测条件下的作用。

C. Goulas, R. Galicher, F. Vidal, J. Mazoyer, F. Ferreira, A. Sevin, A. Potier, A. Boccaletti, E. Gendron, C. Béchet, M. Tallon, M. Langlois, C. Kulcsár, H-F. Raynaud, N. Galland, L. Schreiber, I. Bernardino Dinis, F. Wildi, G. Chauvin2026-03-10🔭 astro-ph

Nonlinear evolution of unstable solar inertial modes: The case of viscous modes on a differentially rotating sphere

该研究通过数值模拟和理论分析,揭示了太阳球面上由较差自转驱动的高纬度 m=1m=1 惯性模在非线性演化中经历超临界 Hopf 分岔并达到饱和,其饱和速度可达 28 m/s 且与观测值相当,尽管三维情况下的物理机制可能有所不同。

Muneeb Mushtaq, Damien Fournier, Rama Ayoub, Peter J. Schmid, Laurent Gizon2026-03-10🔭 astro-ph

Spatiotemporal Properties of Compressible Magnetohydrodynamic Turbulence from Space Plasma

该研究利用 Cluster 卫星数据及新型多航天器偏振模分解技术,首次定量揭示了地球磁鞘中可压缩磁流体湍流的时空特性,证实慢模存在从弱到强的非线性转变而快模保持弱湍流状态,从而完善了跨模态、跨尺度及强弱湍流机制的可压缩湍流观测特征。

Siqi Zhao, Huirong Yan, Terry Z. Liu, Chuanpeng Hou, Ka Ho Yuen2026-03-10🔭 astro-ph

Multi-epoch afterglow rebrightenings in GRB 250129A: Evidence for successive shock interactions

本文通过对 GRB 250129A 的多波段观测数据分析,利用贝叶斯推断等方法排除了单一外激波演化及单次能量注入模型,证实该伽马射线暴在触发后 1.1 天内出现的多次余辉再增亮现象是由相对论性喷流壳层间的延迟碰撞引发的连续激波刷新所致。

D. Akl, S. Antier, H. Koehn, P. T. H. Pang, J. J. Geng, R. Gill, E. Abdikamalov, C. Adami, V. Aivazyan, L. Almeida, S. Alshamsi, C. Andrade, Q. André, C. Angulo-Valdez, J. -L. Atteia, K. Barkaoui, S. Basa, R. L. Becerra, P. Bendjoya, D. Berdikhan, E. Bernaud, S. Boissier, S. Brunier, A. Y. Burdanov, N. R. Butler, J. Chen, F. Colas, W. Corradi, M. W. Coughlin, D. Darson, T. Dietrich, D. Dornic, C. Douzet, C. Dubois, J. -G. Ducoin, T. du Laz, A. Durroux, D. Dutton, P. -A. Duverne, F. Dux, E. G. Elhosseiny, A. Esamdin, A. V. Filippenko, F. Fortin, M. Freeberg, L. García-García, M. Gillon, N. Globus, P. Gokuldass, N. Guessoum, P. Hello, R. Hellot, Y. H. M. Hendy, Y. L. Hua, T. Hussenot-Desenonges, R. Inasaridze, A. Iskandar, M. Jelínek, S. Karpov, A. Klotz, N. Kochiashvili, T. Laskar, A. Le Calloch, W. H. Lee, S. Leonini, X. Y. Li, A. Lien, C. Limonta, J. Liu, D. López-Cámara, F. Magnani, J. Mao, M. Mašek, E. Moreno Méndez, L. C. Menegazzi, W. Mercier, B. M. Mihov, M. Molham, S. Oates, M. Odeh, H. Peng, M. Pereyra, M. Pillas, T. Pradier, N. A. Rakotondrainibe, D. Reichart, J. -P. Rivet, F. D. Romanov, F. Sánchez-Álvarez, N. Sasaki, D. Schlekat, B. Schneider, A. Simon, L. Slavcheva-Mihova, R. Strausbaugh, T. R. Sun, A. Takey, M. Tanasan, D. Turpin, A. de Ugarte Postigo, L. T. Wang, X. F. Wang, Z. M. Wang, A. M. Watson, J. de Wit, Y. S. Yan, W. Zheng, S. Zúñiga-Fernández2026-03-10🔭 astro-ph

LeMMINGs VII: 5 GHz, 50 mas e-MERLIN observations of a statistically complete sample of nearby AGN

本文利用 e-MERLIN 在 5 GHz 频率下对邻近活动星系核(AGN)统计完备样本进行了 50 毫角秒分辨率的成像观测,揭示了低光度活动星系核主要表现为早期型星系中的致密射电喷流或核心,并表明高达 30% 的本地星系群可能拥有射电活跃核,从而凸显了高分辨率、高灵敏度成像对于探测最低光度核辐射的重要性。

D. R. A. Williams-Baldwin (Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester, M13 9PL, UK), R. D. Baldi (INAF - Istituto di Radioastronomia, Via P. Gobetti 101, I-40129 Bologna, Italy), R. J. Beswick (Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester, M13 9PL, UK), I. M. McHardy (School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, UK), E. Carver (School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, UK), J. Clifford (School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, UK), B. T. Dullo (Department of Physical Sciences, Embry-Riddle Aeronautical University, Daytona Beach, FL 32114, USA), N. Kill (School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, UK), B. Krishnamoorthi (School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, UK), I. M. Mutie (Department of Astronomy and Space Science, Technical University of Kenya, P.O Box 52428 - 00200, Nairobi, Kenya, Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester, M13 9PL, UK), O. Woodcock (Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester, M13 9PL, UK), M. K. Argo (Jeremiah Horrocks Institute, School of Engineering and Computing, University of Lancashire, Preston PR1 2HE, UK), P. Boorman (Cahill Center for Astrophysics, California Institute of Technology, 1216 East California Boulevard, Pasadena, CA 91125, USA), E. Brinks (Centre for Astrophysics Research, University of Hertfordshire, College Lane, Hatfield, AL10 9AB, UK), D. M. Fenech (SKAO, Jodrell Bank, Lower Withington, Macclesfield, SK11 9FT, UK), J. H. Knapen (Instituto de Astrofísica de Canarias, Vía Láctea S/N, E-38205 La Laguna, Spain, Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Spain), S. Mathur (Astronomy Department, The Ohio State University, Columbus, OH, 43210, USA, Center for Astronomy and Astro-particle Physics, The Ohio State University, Columbus, OH 43210, USA, Eureka Scientific, 2452 DELMER ST STE 100, Oakland, CA, 94602, USA), J. Moldon (Instituto de Astrofísica de Andalucía), T. W. B. Muxlow (Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester, M13 9PL, UK), M. Pahari (Department of Physics, Indian Institute of Technology, Hyderabad 502285, India), N. H. Wrigley (Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester, M13 9PL, UK), A. Alberdi (Instituto de Astrofísica de Andalucía), W. Baan (Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi 830011, China, Netherlands Institute for Radio Astronomy), A. Beri (Indian Institute of Science Education and Research, School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, UK, Indian Institute of Astrophysics, Koramangala II Block, Bangalore 560034, India), X. Cheng (Korea Astronomy and Space Science Institute, 776 Daedeok-daero, Yuseong-gu, Daejeon 34055, Korea), D. A. Green (Astrophysics Group, Cavendish Laboratory, J. J. Thomson Avenue, Cambridge CB3 0HE, UK), J. Healy (United Kingdom SKA Regional Centre, Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester, M13 9PL, UK), P. Kharb (National Centre for Radio Astrophysics), E. Körding (Department of Astrophysics/IMAPP, Radboud University, P.O. Box 9010, 6500GL Nijmegen, The Netherlands), G. Lucatelli (Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester, M13 9PL, UK), F. Panessa (INAF - Istituto di Astrofisica e Planetologia Spaziali, via Fosso del Cavaliere 100, I-00133 Roma, Italy), M. Puig-Subirà (Instituto de Astrofísica de Andalucía), C. Romero-Cañizales (Institute of Astronomy and Astrophysics, Academia Sinica, 11F of AS/NTU Astronomy-Mathematics Building, No.1, Sec. 4, Roosevelt Rd, Taipei 106319, Taiwan), D. J. Saikia (Fakultät für Physik, Universität Bielefeld, Postfach 100131, D-33501 Bielefeld, Germany, Assam Don Bosco University, Guwahati 781017, Assam, India), P. Saikia (Center for Astro, Particle and Planetary Physics, Department of Astronomy, Yale University, PO Box 208101, New Haven, CT 06520-8101, USA), F. Shankar (School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, UK), S. Sharma (Department of Physics, Indian Institute of Technology, Hyderabad 502285, India), I. R. Stevens (School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK), E. Varenius (Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester, M13 9PL, UK)2026-03-10🔭 astro-ph

A GPU-Accelerated Transient Detection Pipeline for DECam Time-Domain Surveys

本文介绍了一种专为 DECam 时域巡天设计的 GPU 加速瞬变源检测流水线,该流水线通过集成 SFFT 图像差分与 CNN 分类算法,实现了在有限计算资源下约 50 秒/曝光的高效实时处理,并能在保持 99% 真实源完整性的同时剔除 96% 的虚假信号,从而为引力波后续观测及 DESIRT 等关键项目提供可靠的科学级瞬变源警报。

Lei Hu, Tomás Cabrera, Antonella Palmese, Lifan Wang, Igor Andreoni, Xander J. Hall, Xingzhuo Chen, Jiawen Yang, Frank Valdes, Brendan O'Connor, Yuhan Chen2026-03-10🔭 astro-ph

A Deep Learning Framework for Amplitude Generation of Generic EMRIs

该论文提出了一种基于卷积编码器 - 解码器架构并采用迁移学习策略的深度学习框架,通过从简到繁的逐步训练,实现了在毫秒级时间内以约$10^{-3}$的误差快速生成极端质量比旋进(EMRI)的通用克尔轨道 Teukolsky 振幅,从而为空间引力波探测提供了高效且准确的波形建模方案。

Yan-bo Zeng, Jian-dong Zhang, Yi-Ming Hu, Jianwei Mei2026-03-10🔭 astro-ph