The DES Bright Arcs Survey: Candidate Strongly Lensed Galaxy Systems from the Dark Energy Survey 5,000 Sq. Deg. Footprint
J. H. O'Donnell, R. D. Wilkinson, H. T. Diehl, C. Aros-Bunster, K. Bechtol, S. Birrer, E. J. Buckley-Geer, A. Carnero Rosell, M. Carrasco Kind, L. N. da Costa, … 展开作者
J. H. O'Donnell, R. D. Wilkinson, H. T. Diehl, C. Aros-Bunster, K. Bechtol, S. Birrer, E. J. Buckley-Geer, A. Carnero Rosell, M. Carrasco Kind, L. N. da Costa, S. J. Gonzalez Lozano, R. A. Gruendl, M. Hilton, H. Lin, K. A. Lindgren, J. Martin, A. Pieres, E. S. Rykoff, I. Sevilla-Noarbe, E. Sheldon, C. Sifón, D. L. Tucker, B. Yanny, T. M. C. Abbott, M. Aguena, S. Allam, F. Andrade-Oliveira, J. Annis, E. Bertin, D. Brooks, D. L. Burke, J. Carretero, M. Costanzi, J. De Vicente, S. Desai, J. P. Dietrich, K. Eckert, S. Everett, I. Ferrero, B. Flaugher, P. Fosalba, J. Frieman, J. García-Bellido, E. Gaztanaga, D. W. Gerdes, D. Gruen, J. Gschwend, M. S. S. Gill, G. Gutierrez, S. R. Hinton, D. L. Hollowood, K. Honscheid, D. J. James, T. Jeltema, K. Kuehn, O. Lahav, M. Lima, M. A. G. Maia, J. L. Marshall, P. Melchior, F. Menanteau, R. Miquel, R. Morgan, B. Nord, R. L. C. Ogando, F. Paz-Chinchón, M. E. S. Pereira, A. A. Plazas Malagón, M. Rodriguez-Monroy, A. K. Romer, A. Roodman, E. Sanchez, V. Scarpine, M. Schubnell, S. Serrano, M. Smith, E. Suchyta, M. E. C. Swanson, G. Tarle, D. Thomas, C. To, T. N. Varga
We report the combined results of eight searches for strong gravitational lens systems in the full 5,000 sq. deg. of Dark Energy Survey (DES) observations. The observations accumulated by the end of the third observing season fully covered the DES footprint in 5 filters (grizY), with an $i-$band limiting magnitude (at $10σ$) of 23.44. In four searches, a list of potential candidates was identified using a color and magnitude selection from the object catalogs created from the first three observing seasons. Three other searches were conducted at the locations of previously identified galaxy clusters. Cutout images of potential candidates were then visually scanned using an object viewer. An additional set of candidates came from a data-quality check of a subset of the color-coadd "tiles" created from the full DES six-season data set. A short list of the most promising strong lens candidates was then numerically ranked according to whether or not we judged them to be bona fide strong gravitational lens systems. These searches discovered a diverse set of 247 strong lens candidate systems, of which 81 are identified for the first time. We provide the coordinates, magnitudes, and photometric properties of the lens and source objects, and an estimate of the Einstein radius for 81 new systems and 166 previously reported. This catalog will be of use for selecting interesting systems for detailed follow-up, studies of galaxy cluster and group mass profiles, as well as a training/validation set for automated strong lens searches.
Detection of Strongly Lensed Arcs in Galaxy Clusters with Transformers
Taiyuan University of Technology（太原理工大学）；Peng Cheng Lab（鹏城实验室）；Durham University（杜伦大学）；National Astronomical Observatories（国家天文台）；Central South University（中南大学）
Source REconstruction of Arcs behind Cluster Halos (SourceREACH): A New Source Reconstruction Algorithm Optimized for Giant Arcs and Galaxy Cluster Lenses
Dents in the Mirror: A Novel Probe of Dark Matter Substructure in Galaxy Clusters from the Astrometric Asymmetry of Lensed Arcs
School of Physics and Astronomy, University of Minnesota（明尼苏达大学物理与天文学院）；Department of Astronomy and Astrophysics, University of Chicago（芝加哥大学天体物理学系）；Department of Physics and Astronomy, University of California, Los Angeles（加州大学洛杉矶分校物理与天文系）；Department of Physics, University of California at Santa Barbara（加州大学圣塔芭芭拉分校物理系）
JWST lensed quasar dark matter survey IV: Stringent warm dark matter constraints from the joint reconstruction of extended lensed arcs and quasar flux ratios
University of Chicago（芝加哥大学）；University of California, Merced（加州大学默塞德分校）；University of California, Los Angeles（加州大学洛杉矶分校）；Stony Brook University（石溪大学）；Carnegie Institution for Science（卡内基科学机构）；University of California, Davis（加州大学戴维斯分校）；The University of Tokyo（东京大学）
The lensing efficiencies of MACS X-ray selected versus RCS optically selected galaxy clusters
星系团样本中强透镜弧的统计数据提供了有关星系团结构的信息，这些信息与单个星系团的信息是互补的。然而，迄今为止已经分析过的星团样本要么很小，要么不均匀，要么观察到的角分辨率有限。我们测量的透镜弧统计97集群成像高角分辨率与哈勃太空望远镜，识别透镜弧使用两个自动弧检测算法。该样品包括类似数量的X射线选择（MACS）和光学选择（RCS）集群，并跨越集群红移范围为0.2 < z < 1。我们在所选的X射线子样本中编制了42个弧和在光学子样本中编制了7个弧的星表。除五条弧线外，所有这些弧线都是首次报道。在0.3 < z < 0.7时，X射线选择的簇具有显著更高的弧的平均频率，每个簇1.2+/-0.2，而光学样品中为0.2+/-0.1。尽管X射线团簇和光学团簇具有相似的光学光度，但显著不同的透镜效应表明，X射线团簇追踪的质量浓度要大得多。质量差也由X射线团的较低空间密度和光学样品中少数弧的小爱因斯坦半径支持。更高层次的影响，如浓度或子结构的差异，也可能有所贡献。
星系团具有巨大的质量，可以充当引力透镜。星系团后面的星系团可以被透镜扭曲，在图像中形成弧形。本文利用SDSS数据对星系团的巨透镜弧进行了研究。通过对SDSS DR 8和Stripe 82数据中新识别的聚类的SDSS图像进行视觉检查，我们发现了8个强透镜聚类以及另外3个可能和6个可能的情况。透镜弧的颜色比星系团的成员星系更蓝。计算了弧内星系团的质量和光学光度，发现其质光比在几十个M_Solar/L_Solar的范围内，与已知的透镜星系团的分布一致。
Confirming lensed-quasar candidates with DESI and P200 spectroscopy I. 14 lensed quasars and 8 lensed galaxies
Nanchang University（南昌大学）；Purple Mountain Observatory, Chinese Academy of Sciences（中国科学院紫金山天文台）；Beijing Normal University（北京师范大学）；University of Hawaiʻi（夏威夷大学）；University of San Francisco（旧金山大学）；National Astronomical Observatories（国家天文台）；University of Science and Technology of China（中国科学技术大学）
The CASSOWARY spectroscopy survey: A new sample of gravitationally lensed galaxies in SDSS
明亮的引力透镜星系为我们提供了高红移星系的最详细的图像。然而，由于极少数的超亮z~2透镜系统已证实的红移，大多数详细的光谱研究已被限制在他们的范围。为了增加可用于详细跟踪的明亮透镜星系的数量，我们在斯隆数字巡天（SDSS）中开展了一项光谱活动，目标是宽分离（>3角秒）星系-星系透镜候选者。在我们CASSOWARY调查的早期努力的基础上，我们针对SDSS中的候选星系-星系透镜系统的大样本，使用完善的搜索算法识别位于明亮的红色星系周围的蓝色弧状结构。在本文中，我们提出了一个新的红移目录包含25个透镜源SDSS通过光谱的候选星系星系透镜系统的后续确认。在这个新的样本中包括两个已知的z~2最亮的星系（r=19.6和19.7），一个z=1.43的低金属丰度（12 + log（O/H）~8.0）的极端星云线发射星系，以及许多可能进行详细跟踪的系统。源红移跨度为0.9<z<2.5（中位红移为1.9），它们的光学星等范围为19.6<r <22.3. We present a brief source-by-source discussion of the spectroscopic properties extracted from our confirmatory spectra and discuss some initial science results. With mo…
HOLISMOKES XXI: Detecting strongly lensed type Ia supernovae from time series of multi-band LSST-like imaging data -- Part II
Technical University of Munich（慕尼黑工业大学）；Max-Planck-Institut für Astrophysik（马克斯·普朗克天体物理学研究所）；Aix Marseille Univ, CNRS, CNES, LAM（艾克斯-马赛大学）；Finnish Centre for Astronomy with ESO (FINCA), University of Turku（图尔库大学芬兰ESO天文中心）；University of Helsinki（赫尔辛基大学）；INAF - IASF Milano（意大利国家天体物理研究所米兰分院）；University Observatory, LMU Faculty of Physics（慕尼黑大学物理学院天文台）
Kinematic Mapping of Giant Arcs: A New Method to Locate Lensing Critical Curves
University of California, Berkeley（加州大学伯克利分校）；Wuhan University（武汉大学）；Shanghai Jiao-Tong University（上海交通大学）；Fudan University（复旦大学）；Berkeley Center for Cosmological Physics, University of California, Berkeley（加州大学伯克利分校伯克利宇宙物理学中心）；University of California, Los Angeles（加州大学洛杉矶分校）；Instituto de Física de Cantabria (CSIC-UC)（坎塔布里亚物理研究所（西班牙高等科学研究委员会-坎塔布里亚大学））；Center for Astrophysics, Harvard & Smithsonian（哈佛史密森天体物理中心）；Chiba University（千叶大学）
