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A luminous stellar outburst during a long-lasting eruptive phase first, and then SN IIn 2018cnf

We present the results of the monitoring campaign of the Type IIn supernova (SN) 2018cnf (aka ASASSN-18mr). It was discovered about 10 days before the maximum light (on MJD = 58293.4+-5.7 in the V band, with MV = -18.13+-0.15 mag). The…

Solar and Stellar Astrophysics · Physics 2019-09-04 A. Pastorello , A. Reguitti , A. Morales-Garoffolo , Z. Cano , S. J. Prentice , D. Hiramatsu , J. Burke , E. Kankare , R. Kotak , T. Reynolds , S. J. Smartt , S. Bose , Ping Chen , E. Congiu , Subo Dong , S. Geier , M. Gromadzki , E. Y. Hsiao , S. Kumar , P. Ochner , G. Pignata , L. Tomasella , L. Wang , I. Arcavi , C. Ashall , E. Callis , A. de Ugarte Postigo , M. Fraser , G. Hosseinzadeh , D. A. Howell , C. Inserra , D. A. Kann , E. Mason , P. A. Mazzali , C. McCully , O. Rodriguez , M. M. Phillips , K. W. Smith , L. Tartaglia , C. C. Thoene , T. Wevers , D. R. Young , M. L. Pumo , T. B. Lowe , E. A. Magnier , R. J. Wainscoat , C. Waters , D. E. Wright

A Natural $\gtrsim 100\times$ Telescope: Discovery of the Strongly Lensed Type II SN 2025mkn at $z=1.37$

We present the discovery of SN 2025mkn, a gravitationally lensed Type II supernova. First detected as a blue transient in ZTF, 0.83$^{\prime\prime}$ from a $z=0.42$ elliptical galaxy, follow-up SNIFS/UH2.2m and LRIS/Keck spectra revealed…

Cosmology and Nongalactic Astrophysics · Physics 2026-04-10 Cameron Lemon , Ariel Goobar , Joel Johansson , Edvard Mörtsell , Steve Schulze , Igor Andreoni , Aleksandra Bochenek , Seán J. Brennan , Malte Busmann , Michael Coughlin , Kaustav K. Das , Suhail Dhawan , Christoffer Fremling , Anjasha Gangopadhyay , Daniel Gruen , Xander J. Hall , Anna Y. Q. Ho , Mansi M. Kasliwal , Daniel A. Perley , Mickael Rigault , Genevieve Schroeder , Mathew Smith , Jesper Sollerman , Jean J. Somalwar , Robert Stein , Stephen Thorp , Alice Townsend , Jacob L. Wise , Lin Yan , Nikki Arendse , Eric C. Bellm , Tracy X. Chen , Andrew Drake , Frank J. Masci , Josiah Purdum , Roger Smith , Jason T. Hinkle , T. Emil Rivera-Thorsen , Benjamin J. Shappee , Michael A. Tucker , Jessica Aguilar , Steven Ahlen , Greg Aldering , Segev Benzvi , Davide Bianchi , David Brooks , Todd Claybaugh , Axel de la Macorra , John Della Costa , Arjun Dey , Peter Doel , Brenna Flaugher , Andreu Font-Ribera , Jaime E. Forero-Romero , Enrique Gaztañaga , Satya Gontcho A. Gontcho , Gaston Gutierrez , Dragan Huterer , Mustapha Ishak , Jorge Jimenez , Dick Joyce , Stephanie Juneau , Robert Kehoe , Alex G. Kim , David Kirkby , Theodore Kisner , Anthony Kremin , Ofer Lahav , Martin Landriau , Laurent Le Guillou , Michael E. Levi , Marc Manera , Aaron Meisner , Ramon Miquel , John Moustakas , Seshadri Nadathur , Brendan O'Connor , Nathalie Palanque-Delabrouille , Antonella Palmese , Will J. Percival , Ignasi Pérez-Ràfols , Claire Poppett , Francisco Prada , Graziano Rossi , Eusebio Sanchez , David Schlegel , Michael Schubnell , Arman Shafieloo , Joseph Silber , David Sprayberry , Gregory Tarlé , Benjamin A. Weaver , Hu Zou

Multi-wavelength View of the Type IIn Zoo: Optical to X-ray Emission Model of Interaction-Powered Supernovae

Transients powered by interaction with the circumstellar medium (CSM) are often observed in wavelengths other than optical, and multi-wavelength modelling can be important when inferring the properties of the explosion and CSM, or for…

High Energy Astrophysical Phenomena · Physics 2021-06-23 Daichi Tsuna , Kazumi Kashiyama , Toshikazu Shigeyama

The Zwicky Transient Facility Bright Transient Survey. II. A Public Statistical Sample for Exploring Supernova Demographics

We present a public catalog of transients from the Zwicky Transient Facility (ZTF) Bright Transient Survey (BTS), a magnitude-limited (m<19 mag in either the g or r filter) survey for extragalactic transients in the ZTF public stream. We…

High Energy Astrophysical Phenomena · Physics 2020-11-25 Daniel A. Perley , Christoffer Fremling , Jesper Sollerman , Adam A. Miller , Aishwarya S. Dahiwale , Yashvi Sharma , Eric C. Bellm , Rahul Biswas , Thomas G. Brink , Rachel J. Bruch , Kishalay De , Richard Dekany , Andrew J. Drake , Dmitry A. Duev , Alexei V. Filippenko , Avishay Gal-Yam , Ariel Goobar , Matthew J. Graham , Melissa L. Graham , Anna Y. Q. Ho , Ido Irani , Mansi M. Kasliwal , Young-Lo Kim , S. R. Kulkarni , Ashish Mahabal , Frank J. Masci , Shaunak Modak , James D. Neill , Jakob Nordin , Reed L. Riddle , Maayane T. Soumagnac , Nora L. Strotjohann , Steve Schulze , Kirsty Taggart , Anastasios Tzanidakis , Richard S. Walters , Lin Yan

The 2008 Luminous Optical Transient in the Nearby Galaxy NGC 300

A luminous optical transient (OT) that appeared in NGC 300 in early 2008 had a maximum brightness, M_V ~ -12 to -13, intermediate between classical novae and supernovae. We present ground-based photometric and spectroscopic monitoring and…

Solar and Stellar Astrophysics · Physics 2009-11-13 Howard E. Bond , Luigi R. Bedin , Alceste Z. Bonanos , Roberta M. Humphreys , L. A. G. Berto Monard , Jose L. Prieto , Frederick M. Walter

Still Brighter than Pre-Explosion, SN 2012Z Did Not Disappear: Comparing Hubble Space Telescope Observations a Decade Apart

Type Iax supernovae represent the largest class of peculiar white-dwarf supernovae. The type Iax SN~2012Z in NGC 1309 is the only white dwarf supernova with a detected progenitor system in pre-explosion observations. Deep \textit{Hubble…

High Energy Astrophysical Phenomena · Physics 2022-02-09 Curtis McCully , Saurabh W. Jha , Richard A. Scalzo , D. Andrew Howell , Ryan J. Foley , Yaotian Zeng , Zheng-Wei Liu , Griffin Hosseinzadeh , Lars Bildsten , Adam G. Riess , Robert P. Kirshner , G. H. Marion , Yssavo Camacho-Neves

Analysis of broad-lined Type Ic supernovae from the (intermediate) Palomar Transient Factory

We study 34 Type Ic supernovae that have broad spectral features (SNe Ic-BL). We obtained our photometric data with the Palomar Transient Factory (PTF) and its continuation, the intermediate Palomar Transient Factory (iPTF). This is the…

High Energy Astrophysical Phenomena · Physics 2019-01-16 F. Taddia , J. Sollerman , C. Fremling , C. Barbarino , E. Karamehmetoglu , I. Arcavi , S. B. Cenko , A. V. Filippenko , A. Gal-Yam , D. Hiramatsu , G. Hosseinzadeh , D. A. Howell , S. R. Kulkarni , R. Laher , R. Lunnan , F. Masci , P. E. Nugent , A. Nyholm , D. A. Perley , R. Quimby , J. M. Silverman

Optical and Near-IR Observations of the Faint and Fast 2008ha-like Supernova 2010ae

A comprehensive set of optical and near-infrared (NIR) photometry and spectroscopy is presented for the faint and fast 2008ha-like supernova (SN) 2010ae. Contingent on the adopted value of host extinction, SN 2010ae reached a peak…

High Energy Astrophysical Phenomena · Physics 2015-06-17 M. D. Stritzinger , E. Hsiao , S. Valenti , F. Taddia , T. J. Rivera-Thorsen , G. Leloudas , K. Maeda , A. Pastorello , M. M. Phillips , G. Pignata , E. Baron , C. R. Burns , C. Contreras , G. Folatelli , M. Hamuy , P. Hoeflich , N. Morrell , J. L. Prieto , S. Benetti , A. Campillay , J. B. Haislip , A. P. LaClutze , J. P. Moore , D. E. Reichart

SN 2005cs in M51 I. The first month of evolution of a subluminous SN II plateau

Early time optical observations of supernova (SN) 2005cs in the Whirlpool Galaxy (M51), are reported. Photometric data suggest that SN 2005cs is a moderately under-luminous Type II plateau supernova (SN IIP). The SN was unusually blue at…

Astrophysics · Physics 2016-08-30 A. Pastorello , D. Sauer , S. Taubenberger , P. A. Mazzali , K. Nomoto , K. S. Kawabata , S. Benetti , N. Elias-Rosa , A. Harutyunyan , H. Navasardyan , L. Zampieri , T. Iijima , M. T. Botticella , G. Di Rico , M. Del Principe , M. Dolci , S. Gagliardi , M. Ragni , G. Valentini

A tale of two GRB-SNe at a common redshift of z = 0.54

We present ground-based and HST optical observations of the optical transients (OTs) of long-duration Gamma Ray Bursts (GRBs) 060729 and 090618, both at a redshift of z = 0.54. For GRB 060729, bumps are seen in the optical light curves…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-17 Z. Cano , D. Bersier , C. Guidorzi , R. Margutti , K. M Svensson , S. Kobayashi , A. Melandri , K. Wiersema , A. Pozanenko , A. J. van der Horst , G. G. Pooley , A. Fernandez-Soto , A. J. Castro-Tirado , A. de Ugarte Postigo , M. Im , A. P. Kamble , D. Sahu , J. Alonso-Lorite , G. Anupama , J. L. Bibby , M. J. Burgdorf , N. Clay , P. A. Curran , T. A. Fatkhullin , A. S. Fruchter , P. Garnavich , A. Gomboc , J. Gorosabel , J. F. Graham , U. Gurugubelli , J. Haislip , K. Huang , A. Huxor , M. Ibrahimov , Y. Jeon , Y-B. Jeon , K. Ivarsen , D. Kasen , E. Klunko , C. Kouveliotou , A. LaCluyze , A. J. Levan , V. Loznikov , P. A. Mazzali , A. S. Moskvitin , C. Mottram , C. G. Mundell , P. E. Nugent , M. Nysewander , P. T. O'Brien , W. -K. Park , V. Peris , E. Pian , D. Reichart , J. E. Rhoads , E. Rol , V. Rumyantsev , V. Scowcroft , D. Shakhovskoy , E. Small , R. J. Smith , V. V. Sokolov , R. L. C. Starling , I. Steele , R. G. Strom , N. R. Tanvir , Y. Tsapras , Y. Urata , O. Vaduvescu , A. Volnova , A. Volvach , R. A. M. J. Wijers , S. E. Woosley , D. R. Young

Discovery of an intermediate-luminosity red transient in M51 and its likely dust-obscured, infrared-variable progenitor

We present the discovery of an optical transient (OT) in Messier 51, designated M51 OT2019-1 (also ZTF19aadyppr, AT 2019abn, ATLAS19bzl), by the Zwicky Transient Facility (ZTF). The OT rose over 15 days to an observed luminosity of…

Solar and Stellar Astrophysics · Physics 2019-07-31 Jacob E. Jencson , Scott M. Adams , Howard E. Bond , Schuyler D. van Dyk , Mansi M. Kasliwal , John Bally , Nadejda Blagorodnova , Kishalay De , Christoffer Fremling , Yuhan Yao , Andrew Fruchter , David Rubin , Cristina Barbarino , Jesper Sollerman , Adam A. Miller , Erin K. S. Hicks , Matthew A. Malkan , Igor Andreoni , Eric C. Bellm , Robert Buchheim , Richard Dekany , Michael Feeney , Sara Frederick , Avishay Gal-Yam , Robert D. Gehrz , Matteo Giomi , Matthew J. Graham , Wayne Green , David Hale , Matthew J. Hankins , Mark Hanson , George Helou , Anna Y. Q. Ho , T. Hung , Mario Jurić , Malhar R. Kendurkar , S. R. Kulkarni , Ryan M. Lau , Frank J. Masci , James D. Neill , Kevin Quin , Reed L. Riddle , Ben Rusholme , Forrest Sims , Nathan Smith , Roger M. Smith , Maayane T. Soumagnac , Yutaro Tachibana , Samaporn Tinyanont , Richard Walters , Stanley Watson , Robert E. Williams

Rapidly Rising Transients from Subaru Hyper Suprime-Cam Transient Survey

We present rapidly rising transients discovered by a high-cadence transient survey with Subaru telescope and Hyper Suprime-Cam. We discovered five transients at z=0.384-0.821 showing the rising rate faster than 1 mag per 1 day in the…

High Energy Astrophysical Phenomena · Physics 2016-03-16 Masaomi Tanaka , Nozomu Tominaga , Tomoki Morokuma , Naoki Yasuda , Hisanori Furusawa , Petr V. Baklanov , Sergei I. Blinnikov , Takashi J. Moriya , Mamoru Doi , Ji-an Jiang , Takahiro Kato , Yuki Kikuchi , Hanindyo Kuncarayakti , Tohru Nagao , Ken'ichi Nomoto , Yuki Taniguchi

SN 2002cx: The Most Peculiar Known Type Ia Supernova

We present photometric and spectroscopic observations of supernova (SN) 2002cx, which reveal it to be unique among all observed type Ia supernovae (SNe Ia). SN 2002cx exhibits a SN 1991T-like premaximum spectrum, a SN 1991bg-like…

Astrophysics · Physics 2016-08-30 Weidong Li , Alexei V. Filippenko , Ryan Chornock , Edo Berger , Perry Berlind , Michael L. Calkins , Peter Challis , Chris Fassnacht , Saurabh Jha , Robert P. Kirshner , Thomas Matheson , Wallace L. W. Sargent , Robert A. Simcoe , Graeme H. Smith , Gordon Squires

The Rise of the Remarkable Type IIn Supernova SN 2009ip

Recent observations by Mauerhan et al. have shown the unprecedented transition of the previously identified luminous blue variable (and supernova impostor) SN 2009ip to a real Type IIn supernova (SN) explosion. We present high-cadence…

Solar and Stellar Astrophysics · Physics 2015-06-11 J. L. Prieto , J. Brimacombe , A. J. Drake , S. Howerton

The Broad-Lined Type Ic SN 2012ap and the Nature of Relativistic Supernovae Lacking a Gamma-ray Burst Detection

We present ultraviolet, optical, and near-infrared observations of SN 2012ap, a broad-lined Type Ic supernova in the galaxy NGC 1729 that produced a relativistic and rapidly decelerating outflow without a gamma-ray burst signature.…

High Energy Astrophysical Phenomena · Physics 2015-06-22 D. Milisavljevic , R. Margutti , J. T. Parrent , A. M. Soderberg , R. A. Fesen , P. Mazzali , K. Maeda , N. E. Sanders , S. B. Cenko , J. M. Silverman , A. V. Filippenko , A. Kamble , S. Chakraborti , M. R. Drout , R. P. Kirshner , T. E. Pickering , K. Kawabata , T. Hattori , E. Y. Hsiao , M. D. Stritzinger , G. H. Marion , J. Vinko , J. C. Wheeler

A fast X-ray transient from a weak relativistic jet associated with a type Ic-BL supernova

Massive stars end their lives as core-collapse supernovae, amongst which some extremes are broad-lined type Ic supernovae from Wolf-Rayet stars associated with long-duration gamma-ray bursts (LGRBs) having powerful relativistic jets. Their…

High Energy Astrophysical Phenomena · Physics 2025-07-15 H. Sun , W. -X. Li , L. -D. Liu , H. Gao , X. -F. Wang , W. Yuan , B. Zhang , A. V. Filippenko , D. Xu , T. An , S. Ai , T. G. Brink , Y. Liu , Y. -Q. Liu , C. -Y. Wang , Q. -Y. Wu , X. -F. Wu , Y. Yang , B. -B. Zhang , W. -K. Zheng , T. Ahumada , Z. -G. Dai , J. Delaunay , N. Elias-Rosa , S. Benetti , S. -Y. Fu , D. A. Howell , Y. -F. Huang , M. M. Kasliwal , V. Karambelkar , R. Stein , W. -H. Lei , T. -Y. Lian , Z. -K. Peng , D. D. Frederiks , A. V. Ridnaia , D. S. Svinkin , X. -Y. Wang , A. -L. Wang , D. -M. Wei , J. An , M. Andrews , J. -M Bai , C. -Y. Dai , S. A. Ehgamberdiev , Z. Fan , J. Farah , H. -C. Feng , J. P. U. Fynbo , W. -J. Guo , Z. Guo , M. -K. Hu , J. -W. Hu , S. -Q. Jiang , J. -J. Jin , A. Li , J. -D. Li , R. -Z. Li , Y. -F. Liang , Z. -X. Ling , X. Liu , J. -R. Mao , C. McCully , D. Mirzaqulov , M. Newsome , E. Padilla Gonzalez , X. Pan , G. Terreran , S. Tinyanont , B. -T. Wang , L. -Z. Wang , X. -D. Wen , D. -F. Xiang , S. -J. Xue , J. Yang , Z. -P. Zhu , Z. -M. Cai , A. J. Castro-Tirado , F. -S. Chen , H. -L. Chen , T. -X. Chen , W. Chen , Y. -H. Chen , Y. -F. Chen , Y. Chen , H. -Q. Cheng , B. Cordier , C. -Z. Cui , W. -W. Cui , Y. -F. Dai , D. -W. Fan , H. Feng , J. Guan , D. -W. Han , D. -J. Hou , H. -B. Hu , M. -H. Huang , J. Huo , S. -M. Jia , Z. -Q. Jia , B. -W. Jiang , C. -C. Jin , G. Jin , E. Kuulkers , C. -K. Li , D. -Y. Li , J. -F. Li , L. -H. Li , M. -S. Li , W. Li , Z. -D. Li , C. -Z Liu , H. -Y. Liu , H. -Q. Liu , M. -J. Liu , F. -J. Lu , L. -D. Luo , J. Ma , X. Mao , K. Nandra , P. O'Brien , H. -W. Pan , A. Rau , N. Rea , J. Sanders , L. -M. Song , S. -L. Sun , X. -J. Sun , Y. -Y. Tan , Q. -J. Tang , Y. -H. Tao , H. Wang , J. Wang , L. Wang , W. -X. Wang , Y. -L. Wang , Y. -S. Wang , D. -R. Xiong , H. -T. Xu , J. -J. Xu , X. -P. Xu , Y. -F. Xu , Z. Xu , C. -B. Xue , Y. -L. Xue , A. -L. Yan , H. -N. Yang , X. -T. Yang , Y. -J. Yang , C. Zhang , J. Zhang , M. Zhang , S. -N. Zhang , W. -D. Zhang , W. -J. Zhang , Y. -H. Zhang , Z. Zhang , Z. Zhang , Z. -L. Zhang , D. -H. Zhao , H. -S. Zhao , X. -F. Zhao , Z. -J. Zhao , Y. -L. Zhou , Y. -X. Zhu , Z. -C. Zhu , H. Zou

SN 2018gjx reveals that some SNe Ibn are SNe IIb exploding in dense circumstellar material

We present the data and analysis of SN 2018gjx, an unusual low-luminosity transient with three distinct spectroscopic phases. Phase I shows a hot blue spectrum with signatures of ionised circumstellar material (CSM), Phase II has the…

High Energy Astrophysical Phenomena · Physics 2020-09-30 S. J. Prentice , K. Maguire , I. Boian , J. Groh , J. Anderson , C. Barbarino , K. A. Bostroem , J. Burke , P. Clark , Y. Dong , M. Fraser , L. Galbany , M. Gromadzki , C. P. Gutiérrez , D. A. Howell , D. Hiramatsu , C. Inserra , P. A. James , E. Kankare , H. Kuncarayakti , P. A. Mazzali , C. McCully , T. E. Müller-Bravo , M. Nichol , C. Pellegrino , S. J. Smartt , J. Sollerman , L. Tartaglia , S. Valenti , D. R. Young

Discovery of the peculiar supernova 1998bw in the error box of GRB980425

The discovery of X-ray, optical and radio afterglows of gamma-ray bursts (GRBs) and the measurements of the distances to some of them have established that these events come from Gpc distances and are the most powerful photon emitters known…

Astrophysics · Physics 2009-10-30 T. J. Galama , P. M. Vreeswijk , J. van Paradijs , C. Kouveliotou , T. Augusteijn , O. R. Hainaut , F. Patat , H. Boehnhardt , J. Brewer , V. Doublier , J. -F. Gonzalez , C. Lidman , B. Leibundgut , J. Heise , J. in 't Zand , P. J. Groot , R. G. Strom , P. Mazzali , K. Iwamoto , K. Nomoto , H. Umeda , T. Nakamura , T. Koshut , M. Kippen , C. Robinson , P. de Wildt , R. A. M. J. Wijers , N. Tanvir , J. Greiner , E. Pian , E. Palazzi , F. Frontera , N. Masetti , L. Nicastro , E. Malozzi , M. Feroci , E. Costa , L. Piro , B. A. Peterson , C. Tinney , B. Boyle , R. Cannon , R. Stathakis , M. C. Begam , P. Ianna

On the maximum luminosities of normal stripped-envelope supernovae -- brighter than explosion models allow

Stripped-envelope supernovae (SE SNe) of Type Ib and Type Ic are thought to result from explosions of massive stars having lost their outer envelopes. The favoured explosion mechanism is by core-collapse, with the shock later revived by…

Solar and Stellar Astrophysics · Physics 2022-01-12 J. Sollerman , S. Yang , D. Perley , S. Schulze , C. Fremling , M. Kasliwal , K. Shin , B. Racine

Circumstellar Interaction Powers the Light Curves of Luminous Rapidly Evolving Optical Transients

Rapidly evolving transients, or objects that rise and fade in brightness on timescales two to three times shorter than those of typical Type Ia or Type II supernovae (SNe), have uncertain progenitor systems and powering mechanisms. Recent…

High Energy Astrophysical Phenomena · Physics 2022-02-21 C. Pellegrino , D. A. Howell , J. Vinkó , A. Gangopadhyay , D. Xiang , I. Arcavi , P. Brown , J. Burke , D. Hiramatsu , G. Hosseinzadeh , Z. Li , C. McCully , K. Misra , M. Newsome , E. Padilla Gonzalez , T. A. Pritchard , S. Valenti , X. Wang , T. Zhang