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Classifying Astronomical Transients Using Only Host Galaxy Photometry

The Legacy Survey of Space and Time (LSST) at the Vera C. Rubin Observatory will discover tens of thousands of extragalactic transients each night. The high volume of alerts demands immediate classification of transient types in order to…

Astrophysics of Galaxies · Physics 2023-01-11 Marina Kisley , Yu-Jing Qin , Ann Zabludoff , Kobus Barnard , Chia-Lin Ko

A search for an optical counterpart to the gravitational wave event GW151226

We present a search for an electromagnetic counterpart of the gravitational wave source GW151226. Using the Pan-STARRS1 telescope we mapped out 290 square degrees in the optical i_ps filter starting 11.5hr after the LIGO information release…

High Energy Astrophysical Phenomena · Physics 2016-08-31 S. J. Smartt , K. C. Chambers , K. W. Smith , M. E. Huber , D. R. Young , T. -W. Chen , C. Inserra , D. E. Wright , M. Coughlin , L. Denneau , H. Flewelling , A. Heinze , A. Jerkstrand , E. A. Magnier , K. Maguire , B. Mueller , A. Rest , A. Sherstyuk , B. Stalder , A. S. B. Schultz , C. W. Stubbs , J. Tonry , C. Waters , R. Wainscoat , M. Della Valle , M. Dennefeld , G. Dimitriadis , R. E. Firth , M. Fraser , C. Frohmaier , A. Gal-Yam , J. Harmanen , E. Kankare , R. Kotak , M. Kromer , I. Mandel , J. Sollerman , B. Gibson , N. Primak , M. Willman

WINTER on S250206dm: A near-infrared search for an electromagnetic counterpart to a gravitational-wave event

We present near-infrared follow-up observations of the International Gravitational Wave Network (IGWN) event S250206dm with the Wide-Field Infrared Transient Explorer (WINTER). WINTER is a near-infrared time-domain survey designed for…

High Energy Astrophysical Phenomena · Physics 2026-01-23 Danielle Frostig , Viraj R. Karambelkar , Robert D. Stein , Nathan P. Lourie , Mansi M. Kasliwal , Robert A. Simcoe , Mattia Bulla , Tomas Ahumada , Geoffrey Mo , Josiah Purdum , Jill Juneau , Andrew Malonis , Gabor Furesz

A kilonova as the electromagnetic counterpart to a gravitational-wave source

Gravitational waves were discovered with the detection of binary black hole mergers and they should also be detectable from lower mass neutron star mergers. These are predicted to eject material rich in heavy radioactive isotopes that can…

High Energy Astrophysical Phenomena · Physics 2017-10-18 S. J. Smartt , T. -W. Chen , A. Jerkstrand , M. Coughlin , E. Kankare , S. A. Sim , M. Fraser , C. Inserra , K. Maguire , K. C. Chambers , M. E. Huber , T. Kruhler , G. Leloudas , M. Magee , L. J. Shingles , K. W. Smith , D. R. Young , J. Tonry , R. Kotak , A. Gal-Yam , J. D. Lyman , D. S. Homan , C. Agliozzo , J. P. Anderson , C. R. Angus C. Ashall , C. Barbarino , F. E. Bauer , M. Berton , M. T. Botticella , M. Bulla , J. Bulger , G. Cannizzaro , Z. Cano , R. Cartier , A. Cikota , P. Clark , A. De Cia , M. Della Valle , L. Denneau , M. Dennefeld , L. Dessart , G. Dimitriadis , N. Elias-Rosa , R. E. Firth , H. Flewelling , A. Flors , A. Franckowiak , C. Frohmaier , L. Galbany , S. Gonzalez-Gaitan , J. Greiner , M. Gromadzki , A. Nicuesa Guelbenzu , C. P. Gutierrez , A. Hamanowicz , L. Hanlon , J. Harmanen , K. E. Heintz , A. Heinze , M. -S. Hernandez , S. T. Hodgkin , I. M. Hook , L. Izzo , P. A. James , P. G. Jonker , W. E. Kerzendorf , S. Klose , Z. Kostrzewa-Rutkowska , M. Kowalski , M. Kromer , H. Kuncarayakti , A. Lawrence , T. B. Lowe , E. A. Magnier , I. Manulis , A. Martin-Carrillo , S. Mattila , O. McBrien , A. Muller , J. Nordin , D. O'Neill , F. Onori , J. T. Palmerio , A. Pastorello , F. Patat , G. Pignata , Ph. Podsiadlowski , M. L. Pumo , S. J. Prentice , A. Rau , A. Razza , A. Rest , T. Reynolds , R. Roy , A. J. Ruiter , K. A. Rybicki , L. Salmon , P. Schady , A. S. B. Schultz , T. Schweyer , I. R. Seitenzahl , M. Smith , J. Sollerman , B. Stalder , C. W. Stubbs , M. Sullivan , H. Szegedi , F. Taddia , S. Taubenberger , G. Terreran , B. van Soelen , J. Vos , R. J. Wainscoat , N. A. Walton , C. Waters , H. Weiland , M. Willman , P. Wiseman , D. E. Wright , L. Wyrzykowski , O. Yaron

Sciences with the 2.5-meter Wide Field Survey Telescope (WFST)

The Wide Field Survey Telescope (WFST) is a dedicated photometric surveying facility being built jointly by the University of Science and Technology of China and the Purple Mountain Observatory. It is equipped with a 2.5-meter diameter…

Instrumentation and Methods for Astrophysics · Physics 2023-09-18 WFST Collaboration , Tinggui Wang , Guilin Liu , Zhenyi Cai , Jinjun Geng , Min Fang , Haoning He , Ji-an Jiang , Ning Jiang , Xu Kong , Bin Li , Ye Li , Wentao Luo , Zhizheng Pan , Xuefeng Wu , Ji Yang , Jiming Yu , Xianzhong Zheng , Qingfeng Zhu , Yi-Fu Cai , Yuanyuan Chen , Zhiwei Chen , Zigao Dai , Lulu Fan , Yizhong Fan , Wenjuan Fang , Zhicheng He , Lei Hu , Maokai Hu , Zhiping Jin , Zhibo Jiang , Guoliang Li , Fan Li , Xuzhi Li , Runduo Liang , Zheyu Lin , Qingzhong Liu , Wenhao Liu , Zhengyan Liu , Wei Liu , Yao Liu , Zheng Lou , Han Qu , Zhenfeng Sheng , Jianchun Shi , Yiping Shu , Zhenbo Su , Tianrui Sun , Hongchi Wang , Huiyuan Wang , Jian Wang , Junxian Wang , Daming Wei , Junjie Wei , Yongquan Xue , Jingzhi Yan , Chao Yang , Ye Yuan , Yefei Yuan , Hongxin Zhang , Miaomiao Zhang , Haibin Zhao , Wen Zhao

Detection of a close supernova gravitational wave burst in a network of interferometers, neutrino and optical detectors

Trying to detect the gravitational wave (GW) signal emitted by a type II supernova is a main challenge for the GW community. Indeed, the corresponding waveform is not accurately modeled as the supernova physics is very complex; in addition,…

General Relativity and Quantum Cosmology · Physics 2009-11-10 Nicolas Arnaud , Matteo Barsuglia , Marie-Anne Bizouard , Violette Brisson , Fabien Cavalier , Michel Davier , Patrice Hello , Stephane Kreckelbergh , Edward K. Porter

What to expect: kilonova light curve predictions via equation of state marginalization

Efficient multi-messenger observations of gravitational-wave candidates from compact binary coalescence candidate events rely on data products reported in low-latency by the International Gravitational-wave Network (IGWN). While data…

High Energy Astrophysical Phenomena · Physics 2025-03-31 Andrew Toivonen , Gargi Mansingh , Holton Griffin , Armita Kazemi , Frank Kerkow , Stephen K. Mahanty , Jacob Markus , Seiya Tsukamoto , Sushant Sharma Chaudhary , Sarah Antier , Michael W. Coughlin , Deep Chatterjee , Reed Essick , Shaon Ghosh , Tim Dietrich , Philippe Landry

Kilonova constraints for the LIGO/Virgo/KAGRA neutron star merger candidate S250206dm: GW-MMADS observations

Gravitational wave (GW) neutron star mergers with an associated electromagnetic counterpart constitute powerful probes of binary evolution, the production sites of heavy elements, general relativity, and the expansion of the universe. Only…

High Energy Astrophysical Phenomena · Physics 2025-11-04 Lei Hu , Tomás Cabrera , Antonella Palmese , James Freeburn , Mattia Bulla , Igor Andreoni , Xander J. Hall , Brendan O'Connor , Ariel Amsellem , Clécio R. Bom , Malte Busmann , Jennifer Fabà , Julius Gassert , Sena Kalabalik , Keerthi Kunnumkai , Daniel Gruen , Luidhy Santana-Silva , André Santos , Tomás Ahumada , Jonathan Carney , Michael W. Coughlin , Xingzhuo Chen , K. E. Saavik Ford , Daniel E. Holz , Mansi M. Kasliwal , Ignacio Magaña Hernandez , Cassidy Mihalenko , Rosalba Perna , Arno Riffeser , Christoph Ries , Lena Schnappinger , Michael Schmidt , Julian Sommer , Sarah Teague , Pablo Vega , Olga Volchansky , Lifan Wang , Yajie Zhang

Results from the Pan-STARRS Search for Kilonovae: Contamination by Massive Stellar Outbursts

We present results from the Pan-STARRS optical search for kilonovae without the aid of gravitational wave and gamma-ray burst triggers. The search was conducted from 26 October 2019 to 15 December 2022. During this time, we reported 29,740…

High Energy Astrophysical Phenomena · Physics 2025-08-28 M. D. Fulton , S. J. Smartt , M. E. Huber , K. W. Smith , K. C. Chambers , M. Nicholl , S. Srivastav , D. R. Young , E. A. Magnier , C. -C. Lin , P. Minguez , T. de Boer , T. Lowe , R. Wainscoat

Forecast of strongly lensed supernovae rates in the China Space Station Telescope surveys

Strong gravitationally lensed supernovae (SNe) are a powerful probe for cosmology and stellar physics. The relative time delays between lensed SN images provide an independent way of measuring a fundamental cosmological parameter -- the…

Cosmology and Nongalactic Astrophysics · Physics 2024-09-16 Jiang Dong , Yiping Shu , Guoliang Li , Xinzhong Er , Bin Hu , Youhua Xu

Detection of Lensed Gravitational Waves in the Millihertz Band Using Frequency-Domain Lensing Feature Extraction Network

The space-based gravitational wave (GW) detectors are expected to observe lensed GW events, offering new opportunities for cosmology and fundamental physics.Across the millihertz band, lensing effects transition from the wave-optics regime…

Instrumentation and Methods for Astrophysics · Physics 2026-05-06 Tianlong Wang , Tianyu Zhao , Minghui Du , Ziren Luo , Peng Dong , Peng Xu

Find the haystacks, then look for needles: The rate of strongly lensed transients in galaxy-galaxy strong gravitational lenses

The time delay between appearances of multiple images of a gravitationally lensed supernova (glSN) is sensitive to the Hubble constant, $H_0$. As well as time delays, a lensed host galaxy is needed to enable precise inference of $H_0$. In…

Cosmology and Nongalactic Astrophysics · Physics 2024-07-08 Ana Sainz de Murieta , Thomas E. Collett , Mark R. Magee , Justin D. R. Pierel , Wolfgang J. R. Enzi , Martine Lokken , Alex Gagliano , Dan Ryczanowski

Search For a Counterpart to the Subsolar Mass Gravitational Wave Candidate S251112cm

The recent gravitational-wave (GW) alert from a compact object merger involving at least one subsolar mass (SSM) object has prompted questions about their origins. S251112cm is reported by LIGO/Virgo with a false alarm rate of 1 per 6.2…

High Energy Astrophysical Phenomena · Physics 2026-03-19 Nicholas Vieira , Noah Franz , Bhagya Subrayan , Charles D. Kilpatrick , David J. Sand , Wen-fai Fong , Griffin Hosseinzadeh , Kate D. Alexander , K. Azalee Bostroem , Jillian Rastinejad , Kerry Paterson , Manisha Shrestha , Phillip Noel , P. Darc , Jeniveve Pearson , Aysha Aamer , A. Souza Santos , Luidhy Santana-Silva , Clecio R. Bom , Regis Cartier , Hemanth Bommireddy , Ósmar Rodríguez , Jennifer E. Andrews , Conor Ransome , Vasileios Paschalidis , Jay Strader , Aldana Grichener , J. Quirola-Vásquez , Sergiy Vasylyev , Marcelle Soares-Santos , Collin T. Christy , Brian Hsu , D. Carson Fuls , Yize Dong , Daniel E. Reichart , Jonathan Pineda-García , Kathryne J. Daniel , Daryl Janzen , C. E. Fields , Ann Zabludoff , Nicolas Meza , Felipe Olivares E. , Kristine Spekkens , Benjamin Weiner , Maia Williams , Alex R. Gibbs , Frank Shelly , Aravind P. Ravi , Saurabh W. Jha , Stefano Valenti , Joshua Haislip , David E. Trilling

Relativistic Atomic Structure of Au IV and the Os Isoelectronic Sequence: opacity data for kilonova ejecta

Direct detection of gravitational waves (GW) on Aug. 17, 2017, propagating from a binary neutron star merger, opened the era of multimessenger astronomy. The ejected material from neutron star mergers, or kilonova, is a good candidate for…

Solar and Stellar Astrophysics · Physics 2022-07-07 Z. S. Taghadomi , Y. Wan , A. Flowers , P. C. Stancil , B. M. McLaughlin , S. Bromley , J. P. Marler , C. E. Sosolik , S. Loch

Minimum Requirements for Detecting a Stochastic Gravitational Wave Background Using Pulsars

We assess the detectability of a nanohertz gravitational wave (GW) background with respect to additive red and white noise in the timing of millisecond pulsars. We develop detection criteria based on the cross-correlation function summed…

Astrophysics of Galaxies · Physics 2015-05-28 J. M. Cordes , R. M. Shannon

Using Convolutional Neural Networks to Search for Strongly Lensed Quasars in KiDS DR5

Gravitationally strongly lensed quasars (SL-QSO) offer invaluable insights into cosmological and astrophysical phenomena. With the data from ongoing and next-generation surveys, thousands of SL-QSO systems can be discovered expectedly,…

Astrophysics of Galaxies · Physics 2025-01-03 Zizhao He , Rui Li , Yiping Shu , Crescenzo Tortora , Xinzhong Er , Raoul Canameras , Stefan Schuldt , Nicola R. Napolitano , Bharath Chowdhary N , Qihang Chen , Nan Li , Haicheng Feng , Limeng Deng , Guoliang Li , L. V. E. Koopmans , Andrej Dvornik

Advancing Identification method of Gamma-Ray Bursts with Data and Feature Enhancement

Gamma-ray bursts (GRBs) are challenging to identify due to their transient nature, complex temporal profiles, and limited observational datasets. We address this with a one-dimensional convolutional neural network integrated with an…

High Energy Astrophysical Phenomena · Physics 2025-12-12 Peng Zhang , Bing Li , Ren-Zhou Gui , Shao-Lin Xiong , Yu Wang , Shi-Jie Zheng , Guang-Cheng Xiao , Xiao-Bo Li , Yue Huang , Chen-Wei Wang , Jia-Cong Liu , Yan-Qiu Zhang , Wang-Chen Xue , Chao Zheng , Yue Wang

Identifying extra high frequency gravitational waves generated from oscillons with cuspy potentials using deep neural networks

During oscillations of cosmology inflation around the minimum of a cuspy potential after inflation, the existence of extra high frequency gravitational waves (HFGWs) (GHz) has been proven effectively recently. Based on the electromagnetic…

Data Analysis, Statistics and Probability · Physics 2019-10-18 Li Li Wang , Jin Li , Nan Yang , Xin Li

Panning for gold, but finding helium: discovery of the ultra-stripped supernova SN2019wxt from gravitational-wave follow-up observations

We present the results from multi-wavelength observations of a transient discovered during the follow-up of S191213g, a gravitational wave (GW) event reported by the LIGO-Virgo Collaboration as a possible binary neutron star merger in a low…

High Energy Astrophysical Phenomena · Physics 2023-07-26 I. Agudo , L. Amati , T. An , F. E. Bauer , S. Benetti , M. G. Bernardini , R. Beswick , K. Bhirombhakdi , T. de Boer , M. Branchesi , S. J. Brennan , M. D. Caballero-García , E. Cappellaro , N. Castro Rodríguez , A. J. Castro-Tirado , K. C. Chambers , E. Chassande-Mottin , S. Chaty , T. -W. Chen , A. Coleiro , S. Covino , F. D'Ammando , P. D'Avanzo , V. D'Elia , A. Fiore , A. Flörs , M. Fraser , S. Frey , C. Frohmaier , L. Galbany , C. Gall , H. Gao , J. García-Rojas , G. Ghirlanda , S. Giarratana , J. H. Gillanders , M. Giroletti , B. P. Gompertz , M. Gromadzki , K. E. Heintz , Y. -D. Hu , M. E. Huber , A. Inkenhaag , L. Izzo , Z. P. Jin , P. G. Jonker , D. A. Kann , E. C. Kool , R. Kotak , G. Leloudas , A. J. Levan , C. -C. Lin , J. D. Lyman , E. A. Magnier , K. Maguire , I. Mandel , B. Marcote , D. Mata Sánchez , S. Mattila , A. Melandri , M. J. Michałowski , J. Moldon , M. Nicholl , A. Nicuesa Guelbenzu , S. R. Oates , F. Onori , M. Orienti , R. Paladino , Z. Paragi , M. Perez-Torres , E. Pian , G. Pignata , S. Piranomonte , J. Quirola-Vásquez , F. Ragosta , A. Rau , S. Ronchini , A. Rossi , R. Sánchez-Ramírez , O. S. Salafia , S. Schulze , S. J. Smartt , K. W. Smith , J. Sollerman , S. Srivastav , R. L. C. Starling , D. Steeghs , H. F. Stevance , V. Testa , M. A. P. Torres , S. D. Vergani , D. Vescovi , R. Wainscost , D. Watson , K. Wiersema , Ł. Wyrzykowski , J. Yang , S. Yang , D. R. Young

Tight multi-messenger constraints on the neutron star equation of state from GW170817 and a forward model for kilonova light curve synthesis

We present a rapid analytic framework for predicting kilonova light curves following neutron star (NS) mergers, where the main input parameters are binary-based properties measurable by gravitational wave detectors (chirp mass and mass…

High Energy Astrophysical Phenomena · Physics 2021-07-07 Matt Nicholl , Ben Margalit , Patricia Schmidt , Graham P. Smith , Evan J. Ridley , James Nuttall