Related papers: The Enigmatic Type Icn Supernova 2024abvb Located …

Discovery of a Relativistic Stripped Envelope Type Ic-BL Supernova at z = 2.83 with JWST

We present JWST NIRCam and NIRSpec observations of a Type Ic supernova (SN Ic) and its host galaxy (JADES-GS+53.13533-27.81457) at $z = 2.83$. This SN (named SN 2023adta) was identified in deep James Webb Space Telescope (JWST)/NIRCam…

High Energy Astrophysical Phenomena · Physics 2024-10-02 M. R. Siebert , C. Decoursey , D. A. Coulter , M. Engesser , J. D. R. Pierel , A. Rest , E. Egami , M. Shahbandeh , W. Chen , O. D. Fox , Y. Zenati , T. J. Moriya , A. J. Bunker , P. A. Cargile , M. Curti , D. J. Eisenstein , S. Gezari , S. Gomez , M. Guolo , B. D. Johnson , B. A. Joshi , M. Karmen , R. Maiolino , R. M. Quimby , B. Robertson , L. G. Strolger , F. Sun , Q. Wang , T. Wevers

Constraining the TeV gamma-ray emission of SN 2024bch, a possible type IIn-L from a red supergiant progenitor. Multiwavelength observations and analysis of the progenitor

We present very high-energy optical photometry and spectroscopic observations of SN 2024bch in the nearby galaxy NGC 3206 (\sim 20 Mpc). We used gamma-ray observations performed with the first Large-Sized Telescope (LST-1) of the Cherenkov…

High Energy Astrophysical Phenomena · Physics 2025-08-28 The CTAO-LST Project , : , K. Abe , S. Abe , A. Abhishek , F. Acero , A. Aguasca-Cabot , I. Agudo , C. Alispach , D. Ambrosino , F. Ambrosino , L. A. Antonelli , C. Aramo , A. Arbet-Engels , C. Arcaro , T. T. H. Arnesen , K. Asano , P. Aubert , A. Baktash , M. Balbo , A. Bamba , A. Baquero-Larriva , U. Barresde-Almeida , J. A. Barrio , L. Barrios-Jiménez , I. Batkovic , J. Baxter , J. BecerraGonzález , E. Bernardini , J. Bernete , A. Berti , I. Bezshyiko , C. Bigongiari , E. Bissaldi , O. Blanch , G. Bonnoli , P. Bordas , G. Borkowski , G. Brunelli , A. Bulgarelli , M. Bunse , I. Burelli , L. Burmistrov , M. Cardillo , S. Caroff , A. Carosi , R. Carraro , M. S. Carrasco , F. Cassol , N. Castrejón , D. Cerasole , G. Ceribella , A. Cerviño-Cortínez , Y. Chai , K. Cheng , A. Chiavassa , M. Chikawa , G. Chon , L. Chytka , G. M. Cicciari , A. Cifuentes , J. L. Contreras , J. Cortina , H. Costantini , M. Dalchenko , P. DaVela , F. Dazzi , A. DeAngelis , M. de Bony de Lavergne , R. Del Burgo , C. Delgado , J. Delgado Mengual , M. Dellaiera , D. della Volpe , B. De Lotto , L. Del Peral , R. de Menezes , G. De Palma , C. Díaz , A. Di Piano , F. Di Pierro , R. Di Tria , L. Di Venere , R. M. Dominik , D. Dominis Prester , A. Donini , D. Dore , D. Dorner , M. Doro , L. Eisenberger , D. Elsässer , G. Emery , J. Escudero , V. Fallah Ramazani , F. Ferrarotto , A. Fiasson , L. Foffano , F. Frías García-Lago , S. Fröse , Y. Fukazawa , S. Gallozzi , R. Garcia López , S. Garcia Soto , C. Gasbarra , D. Gasparrini , D. Geyer , J. Giesbrecht Paiva , N. Giglietto , F. Giordano , N. Godinovic , T. Gradetzke , R. Grau , D. Green , J. Green , S. Gunji , P. Günther , J. Hackfeld , D. Hadasch , A. Hahn , M. Hashizume , T. Hassan , K. Hayashi , L. Heckmann , M. Heller , J. Herrera Llorente , K. Hirotani , D. Hoffmann , D. Horns , J. Houles , M. Hrabovsky , D. Hrupec , D. Hui , M. Iarlori , R. Imazawa , T. Inada , Y. Inome , S. Inoue , K. Ioka , M. Iori , T. Itokawa , A. Iuliano , J. Jahanvi , I. Jimenez Martinez , J. Jimenez Quiles , I. Jorge Rodrigo , J. Jurysek , M. Kagaya , O. Kalashev , V. Karas , H. Katagiri , D. Kerszberg , T. Kiyomot , Y. Kobayashi , K. Kohri , A. Kong , P. Kornecki , H. Kubo , J. Kushida , B. Lacave , M. Lainez , G. Lamanna , A. Lamastra , L. Lemoigne , M. Linhoff , S. Lombardi , F. Longo , R. López-Coto , M. López-Moya , A. López-Oramas , S. Loporchio , A. Lorini , J. LozanoBahilo , F. Lucarelli , H. Luciani , P. L. Luque-Escamilla , P. Majumdar , M. Makariev , M. Mallamaci , D. Mandat , M. Manganaro , D. K. Maniadakis , G. Manicò , K. Mannheim , S. Marchesi , F. Marini , M. Mariotti , P. Marquez , G. Marsella , J. Martí , O. Martinez , G. Martínez , M. Martínez , A. Mas-Aguilar , M. Massa , G. Maurin , D. Mazin , J. Méndez-Gallego , S. Menon , E. MestreGuillen , S. Micanovic , D. Miceli , T. Miener , J. M. Miranda , R. Mirzoyan , M. Mizote , T. Mizuno , M. Molero Gonzalez , E. Molina , T. Montaruli , A. Moralejo , D. Morcuende , A. Moreno Ramos , A. Morselli , V. Moya , H. Muraishi , S. Nagataki , T. Nakamori , A. Neronov , D. Nieto Castaño , M. Nievas Rosillo , L. Nikolic , K. Nishijima , K. Noda , D. Nosek , V. Novotny , S. Nozaki , M. Ohishi , Y. Ohtani , T. Oka , A. Okumura , R. Orito , L. Orsini , J. Otero-Santos , P. Ottanelli , M. Palatiello , G. Panebianco , D. Paneque , F. R. Pantaleo , R. Paoletti , J. M. Paredes , M. Pech , M. Pecimotika , M. Peresano , F. Pfeifle , E. Pietropaolo , M. Pihet , G. Pirola , C. Plard , F. Podobnik , M. Polo , E. Prandini , M. Prouza , S. Rainò , R. Rando , W. Rhode , M. Ribó , V. Rizi , G. Rodriguez Fernandez , M. D. Rodríguez Frías , P. Romano , A. Roy , A. Ruina , E. Ruiz-Velasco , T. Saito , S. Sakurai , D. A. Sanchez , H. Sano , T. Šarić , Y. Sato , F. G. Saturni , V. Savchenko , F. Schiavone , B. Schleicher , F. Schmuckermaier , J. L. Schubert , F. Schussler , T. Schweizer , M. Seglar Arroyo , T. Siegert , G. Silvestri , A. Simongini , J. Sitarek , V. Sliusar , A. Stamerra , J. Strišković , M. Strzys , Y. Suda , A. Sunny , H. Tajima , M. Takahashi , J. Takata , R. Takeishi , P. H. T. Tam , S. J. Tanaka , D. Tateishi , T. Tavernier , P. Temnikov , Y. Terada , K. Terauchi , T. Terzic , M. Teshima , M. Tluczykont , F. Tokanai , T. Tomura , D. F. Torres , F. Tramonti , P. Travnicek , G. Tripodo , A. Tutone , M. Vacula , J. van Scherpenberg , M. Vázquez Acosta , S. Ventura , S. Vercellone , G. Verna , I. Viale , A. Vigliano , C. F. Vigorito , E. Visentin , V. Vitale , V. Voitsekhovskyi , G. Voutsinas , I. Vovk , T. Vuillaume , R. Walter , L. Wan , M. Will , J. Wójtowicz , T. Yamamoto , R. Yamazaki , Y. Yao , P. K. H. Yeung , T. Yoshida , T. Yoshikoshi , W. Zhang

SN 2024ggi in NGC 3621: Rising Ionization in a Nearby, CSM-Interacting Type II Supernova

We present UV/optical/NIR observations and modeling of supernova (SN) 2024ggi, a type II supernova (SN II) located in NGC 3621 at 7.2 Mpc. Early-time ("flash") spectroscopy of SN 2024ggi within +0.8 days of discovery shows emission lines of…

High Energy Astrophysical Phenomena · Physics 2024-06-27 W. V. Jacobson-Galán , K. W. Davis , C. D. Kilpatrick , L. Dessart , R. Margutti , R. Chornock , R. J. Foley , P. Arunachalam , K. Auchettl , C. R. Bom , R. Cartier , D. A. Coulter , G. Dimitriadis , D. Dickinson , M. R. Drout , A. T. Gagliano , C. Gall , B. Garretson , L. Izzo , D. O. Jones , N. LeBaron , H. -Y. Miao , D. Milisavljevic , Y. -C. Pan , A. Rest , C. Rojas-Bravo , A. Santos , H. Sears , B. M. Subrayan , K. Taggart , S. Tinyanont

Evolution of A Peculiar Type Ibn Supernova SN 2019wep

We present a high-cadence short term photometric and spectroscopic monitoring campaign of a type Ibn SN 2019wep, which is one of the rare SN Ibn after SNe 2010al and 2019uo to display signatures of flash ionization (\ion{He}{2}, \ion{C}{3},…

High Energy Astrophysical Phenomena · Physics 2022-05-18 Anjasha Gangopadhyay , Kuntal Misra , Griffin Hosseinzadeh , Iair Arcavi , Craig Pellegrino , Xiaofeng Wang , D. Andrew Howell , Jamison Burke , Jujia Zhang , Koji Kawabata , Mridweeka Singh , Raya Dastidar , Daichi Hiramatsu , Curtis McCully , Jun Mo , Zhihao Chen , Danfeng Xiang

Photometry and Spectroscopy of SN 2024pxl: A Luminosity Link Among Type Iax Supernovae

We present extensive ultraviolet to optical photometric and optical to near-infrared (NIR) spectroscopic follow-up observations of the nearby intermediate-luminosity ($M_V = -16.81\pm0.19$~mag) Type Iax supernova (SN) 2024pxl in NGC 6384.…

High Energy Astrophysical Phenomena · Physics 2026-02-04 Mridweeka Singh , Lindsey A. Kwok , Saurabh W. Jha , R. Dastidar , Conor Larison , Alexei V. Filippenko , Jennifer E. Andrews , Moira Andrews , G. C. Anupama , Prasiddha Arunachalam , Katie Auchettl , Dominik BÁnhidi , Barnabas Barna , K. Azalee Bostroem , Thomas G. Brink , RÉgis Cartier , Ping Chen , Collin T. Christy , David A. Coulter , Sofia Covarrubias , Kyle W. Davis , Connor B. Dickinson , Yize Dong , Joseph Farah , Andreas FlÖrs , Ryan J. Foley , Noah Franz , Christoffer Fremling , LluÍs Galbany , Anjasha Gangopadhyay , Aarna Garg , Elinor L. Gates , Or Graur , Alexa C. Gordon , Daichi Hiramatsu , Emily Hoang , D. Andrew Howell , Brian Hsu , Joel Johansson , Arti Joshi , Lordrick A. Kahinga , Ravjit Kaur , Sahana Kumar , Piramon Kumnurdmanee , Hanindyo Kuncarayakti , Natalie Lebaron , C. Lidman , Chang Liu , Keiichi Maeda , Kate Maguire , Bailey Martin , Curtis Mccully , Darshana Mehta , Luca M. Menotti , Anne J. Metevier , A. A. Miller , Kuntal Misra , C. Tanner Murphey , Megan Newsome , Estefania Padilla Gonzalez , Kishore C. Patra , Jeniveve Pearson , Anthony L. Piro , Abigail Polin , Aravind P. Ravi , Armin Rest , Nabeel Rehemtulla , Nicolas Meza Retamal , O. M. Robinson , CÉsar Rojas-Bravo , Devendra K. Sahu , David J. Sand , Brian P. Schmidt , Steve Schulze , Michaela Schwab , Manisha Shrestha , Matthew R. Siebert , Sunil Simha , Nathan Smith , Jesper Sollerman , Shubham Srivastav , Bhagya M. Subrayan , TamÁs Szalai , Kirsty Taggart , Rishabh Singh Teja , Jacco H. Terwel , Samaporn Tinyanont , Stefano Valenti , JÓzsef VinkÓ , Aya L. Westerling , J. Craig Wheeler , Yi Yang , Weikang Zheng

SN 2011hw: Helium-Rich Circumstellar Gas and the Luminous Blue Variable to Wolf-Rayet Transition in Supernova Progenitors

We present optical photometry and spectroscopy of the peculiar Type IIn/Ibn supernova SN2011hw. Its light curve exhibits a slower decline rate than normal SNeIbc, with a peak absolute magnitude of -19.5 (unfiltered) and a secondary peak of…

Solar and Stellar Astrophysics · Physics 2015-06-04 Nathan Smith , Jon C. Mauerhan , Jeffrey M. Silverman , Mohan Ganeshalingam , Alexei V. Filippenko , S. Bradley Cenko , Kelsey I. Clubb , Michael Kandrashoff

The Diverse Properties of Type Icn Supernovae Point to Multiple Progenitor Channels

We present a sample of Type Icn supernovae (SNe Icn), a newly-discovered class of transients characterized by their interaction with H- and He-poor circumstellar material (CSM). This sample is the largest collection of SNe Icn to date and…

High Energy Astrophysical Phenomena · Physics 2022-10-19 C. Pellegrino , D. A. Howell , G. Terreran , I. Arcavi , K. A. Bostroem , P. J. Brown , J. Burke , Y. Dong , A. Gilkis , D. Hiramatsu , G. Hosseinzadeh , C. McCully , M. Modjaz , M. Newsome , E. Padilla Gonzalez , T. A. Pritchard , D. J. Sand , S. Valenti , M. Williamson

Characterization of type Ibn SNe

Type Ibn supernovae (SNe) are characterized by narrow helium (He I) lines from photons produced by the unshocked circumstellar material (CSM). About 80 SNe Ibn have been discovered to date, and only a handful have extensive observational…

High Energy Astrophysical Phenomena · Physics 2026-04-15 D. Farias , C. Gall , V. A. Villar , K. Auchettl , K. M. de Soto , A. Gagliano , W. B. Hoogendam , G. Narayan , A. Sedgewick , S. K. Yadavalli , Y. Zenati , C. R. Angus , K. W. Davis , J. Hjorth , W. V. Jacobson-Galán , D. O. Jones , C. D. Kilpatrick , M. J. Bustamante Rosell , D. A. Coulter , G. Dimitriadis , R. J. Foley , A. Gangopadhyay , H. Gao , M. E. Huber , L. Izzo , J. L. Johnson , A. L. Piro , A. Rest , C. Rojas-Bravo , M. R. Siebert , K. Taggart , S. Tinyanont

Discovery of a variable yellow supergiant progenitor for the Type IIb SN 2024abfo

We report the discovery of a progenitor candidate for the Type~IIb SN2024abfo using multi-epoch pre-explosion images from the Hubble Space Telescope and the Dark Energy Camera Legacy Survey. The progenitor exhibited a ~0.7 mag decline in…

High Energy Astrophysical Phenomena · Physics 2025-06-24 Zexi Niu , Ning-Chen Sun , Justyn R. Maund , Zhen Guo , Wenxiong Li , Meng Sun , Jifeng Liu

Massive stars exploding in a He-rich circumstellar medium. VI. Observations of two distant Type Ibn supernova candidates discovered by La Silla-QUEST

We present optical observations of the peculiar stripped-envelope supernovae (SNe) LSQ12btw and LSQ13ccw discovered by the La Silla-QUEST survey. LSQ12btw reaches an absolute peak magnitude of M(g) = -19.3 +- 0.2, and shows an asymmetric…

Solar and Stellar Astrophysics · Physics 2015-06-23 A. Pastorello , E. Hadjiyska , D. Rabinowitz , S. Valenti , M. Turatto , G. Fasano , S. Benitez-Herrera , C. Baltay , S. Benetti , M. T. Botticella , E. Cappellaro , N. Elias-Rosa , N. Ellman , U. Feindt , A. V. Filippenko , M. Fraser , A. Gal-Yam , M. L. Graham , D. A. Howell , C. Inserra , P. L. Kelly , R. Kotak , M. Kowalski , R. McKinnon , A. Morales-Garoffolo , P. E. Nugent , S. J. Smartt , K. W. Smith , M. D. Stritzinger , M. Sullivan , S. Taubenberger , E. S. Walker , O. Yaron , D. R. Young

Discovery and Extensive Follow-Up of SN 2024ggi, a nearby type IIP supernova in NGC 3621

We present the discovery and early observations of the nearby Type II supernova (SN) 2024ggi in NGC 3621 at 6.64 +/- 0.3 Mpc. The SN was caught 5.8 (+1.9 -2.9) hours after its explosion by the ATLAS survey. Early-phase, high-cadence, and…

High Energy Astrophysical Phenomena · Physics 2024-06-14 Ting-Wan Chen , Sheng Yang , Shubham Srivastav , Takashi J. Moriya , Stephen J. Smartt , Sofia Rest , Armin Rest , Hsing Wen Lin , Hao-Yu Miao , Yu-Chi Cheng , Amar Aryan , Chia-Yu Cheng , Morgan Fraser , Li-Ching Huang , Meng-Han Lee , Cheng-Han Lai , Yu Hsuan Liu , Aiswarya Sankar. K , Ken W. Smith , Heloise F. Stevance , Ze-Ning Wang , Joseph P. Anderson , Charlotte R. Angus , Thomas de Boer , Kenneth Chambers , Hao-Yuan Duan , Nicolas Erasmus , Hua Gao , Joanna Herman , Wei-Jie Hou , Hsiang-Yao Hsiao , Mark E. Huber , Chien-Cheng Lin , Hung-Chin Lin , Eugene A. Magnier , Ka Kit Man , Thomas Moore , Chow-Choong Ngeow , Matt Nicholl , Po-Sheng Ou , Giuliano Pignata , Yu-Chien Shiau , Julian Silvester Sommer , John L. Tonry , Xiao-Feng Wang , David R. Young , You-Ting Yeh , Jujia Zhang

Spectral Diversity in Type Ibn Supernovae and the Large Host Offset of SN2024acyl

In this paper, we first present observations of SN~2024acyl, a normal Type Ibn supernova with a large projected offset ($\sim$35~kpc) from its host galaxy. The low star-formation rate measured at the explosion site raises the possibility…

High Energy Astrophysical Phenomena · Physics 2025-11-11 Yize Dong , V. Ashley Villar , Anya Nugent , Griffin Hosseinzadeh , Ryan J. Foley , Christa Gall , Monica Gallegos-Garcia , Conor Ransome , Aidan Sedgewick , Daichi Tsuna , Stefano Valenti , Henna Abunemeh , Moira Andrews , Katie Auchettl , K. Azalee Bostroem , David A. Coulter , Thomas de Boer , Kaylee de Soto , Diego A. Farias , Joseph Farah , Danielle Frostig , Hua Gao , Alex Gagliano , Emily Hoang , D. Andrew Howell , Willem B. Hoogendam , Mark E. Huber , David O. Jones , Chien-Cheng Lin , Michael Lundquist , Curtis McCully , Darshana Mehta , Anthony L. Piro , Aravind P. Ravi , Nicolás Meza Retamal , César Rojas-Bravo , S. Karthik Yadavalli , Qinan Wang

SN 2024aecx: A double-peaked rapidly evolving Type IIb supernova at 11 Mpc

We present the results of low-resolution spectroscopic and densely sampled multi-band photometric follow-up of supernova (SN) 2024aecx. The SN was discovered in the spiral galaxy NGC 3521 (distance $\sim$11 Mpc) within a day after the…

High Energy Astrophysical Phenomena · Physics 2025-11-12 Xingzhu Zou , Brajesh Kumar , Rishabh Singh Teja , D. K. Sahu , Xinlei Chen , Avinash Singh , Weikang Lin , Xiangkun Liu , Dezi Liu , Hrishav Das , Mridweeka Singh , G. C. Anupama , Yu Pan , Guowang Du , Helong Guo , Tao Wang , Xufeng Zhu , Jujia Zhang , Yuan Fang , Chenxu Liu , Kaushik Chatterjee , Yuan-Pei Yang , Liping Li , Qian Zhai , Edoardo P. Lagioia , Xueling Du , Xinzhong Er , Jianhui Lian , Ziwei Li , Shiyan Zhong , Xiaowei Liu

A Low-Mass Helium Star Progenitor Model for the Type Ibn SN 2020nxt

A growing number of supernovae (SNe) are now known to exhibit evidence for significant interaction with a dense, pre-existing, circumstellar medium (CSM). SNe Ibn comprise one such class that can be characterised by both rapidly evolving…

High Energy Astrophysical Phenomena · Physics 2023-05-10 Qinan Wang , Anika Goel , Luc Dessart , Ori D. Fox , Melissa Shahbandeh , Sofia Rest , Armin Rest , Jose H. Groh , Andrew Allan , Claes Fransson , Nathan Smith , Griffin Hosseinzadeh , Alexei V. Filippenko , Jennifer Andrews , K. Azalee Bostroem , Thomas G. Brink , Peter Brown , Jamison Burke , Roger Chevalier , Geoffrey C. Clayton , Mi Dai , Kyle W. Davis , Ryan J. Foley , Sebastian Gomez , Chelsea Harris , Daichi Hiramatsu , D. Andrew Howell , Connor Jennings , Saurabh W. Jha , Mansi M. Kasliwal , Patrick L. Kelly , Erik C. Kool , Evelyn Liu , Emily Ma , Curtis McCully , Adam M. Miller , Yukei Murakami , Craig Pellegrino , Estefania Padilla Gonzalez , Derek Perera , Justin Pierel , César Rojas-Bravo , Matthew R. Siebert , Jesper Sollerman , Tamás Szalai , Samaporn Tinyanont , Schuyler D. Van Dyk , WeiKang Zheng , Kenneth C. Chambers , David A. Coulter , Thomas de Boer , Nicholas Earl , Diego Farias , Christa Gall , Peter McGill , Conor L. Ransome , Kirsty Taggart , V. Ashley Villar

SN 2024afav: A Superluminous Supernova with Multiple Light Curve Bumps and Spectroscopic Signatures of Circumstellar Interaction

We present a comprehensive optical and near-infrared spectroscopic study of SN 2024afav - a hydrogen-poor superluminous supernova (SLSN-I) that peaks at $\approx$ -20.7 mag and exhibits an unusual multi-bumped light curve. Our spectroscopic…

Solar and Stellar Astrophysics · Physics 2025-12-09 Harsh Kumar , Peter K. Blanchard , Edo Berger , Wasundara Athukoralalage , Daichi Hiramatsu , Sebastian Gomez , Moira Andrews , K. Azalee Bostroem , Joseph R. Farah , D. Andrew Howell , Curtis McCully

The Type Ia Supernova 2021hem: A 2003fg-like Event in an Apparently Hostless Environment

We report observations of Type Ia SN 2021hem, located in an apparently hostless environment. With a peak absolute B-band magnitude of -19.96 mag, and a lack of secondary maximum in near-infrared and i-band light curves make it resemble…

High Energy Astrophysical Phenomena · Physics 2026-02-18 Subhash Bose , M. D. Stritzinger , A. Malmgaard , C. J. Miller , N. Elias-Rosa , J. P. U. Fynbo , C. Ashall , C. R. Burns , J. M. DerKacy , L. Galbany , C. P. Gutiérrez , W. B. Hoogendam , E. Y. Hsiao , E. A. M. Jensen , K. Medler , Alaa Alburai , J. Anderson , E. Baron , J. Duarte , M. Gromadzki , C. Inserra , P. A. Mazzali , T. E. Müller-Bravo , P. Lundqvist , A. Reguitti , I. Salmaso , D. J. Sand , G. Valerin

Nested, asymmetric H-He circumstellar shells in the Type Icn/Ibn SN 2024abvb

Interacting transients probe mass loss in the final stages of stellar evolution; however, the geometry and timing of multi-episode mass loss remain poorly constrained. SN 2024abvb is a nearby interacting event with transitional Ibn/Icn…

Solar and Stellar Astrophysics · Physics 2026-04-10 The INTEL Collaboration , J. P. Anderson , C. Aster , M. Bulla , T. -W. Chen , M. Fraser , L. Galbany , C. P. Gutiérrez , C. Inserra , T. Killestein , G. Leloudas , J. D. Lyman , K. Maeda , K. Maguire , E. Mason , T. Moriya , A. Pastorello , S. Taubenberger , M. Pursiainen , H. Wichern

Early and Extensive Ultraviolet Through Near Infrared Observations of the Intermediate-Luminosity Type Iax Supernovae 2024pxl

We present ultraviolet (UV) through near-infrared (NIR) photometric and spectroscopic observations of the nearby SN 2024pxl, the third Type Ia supernova (SN Ia) in NGC 6384. SN 2024pxl is a Type Iax supernova (SN Iax) with an intermediate…

High Energy Astrophysical Phenomena · Physics 2025-08-28 W. B. Hoogendam , C. Ashall , D. O. Jones , B. J. Shappee , M. A. Tucker , M. E. Huber , K. Auchettl , D. D. Desai , A. Do , J. T. Hinkle , M. Y. Kong , S. Romagnoli , J. Shi , A. Syncatto , C. D. Kilpatrick

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

The X-ray Luminous Type Ibn SN 2022ablq: Estimates of Pre-explosion Mass Loss and Constraints on Precursor Emission

Type Ibn supernovae (SNe Ibn) are rare stellar explosions powered primarily by interaction between the SN ejecta and H-poor, He-rich material lost by their progenitor stars. Multi-wavelength observations, particularly in the X-rays, of SNe…

High Energy Astrophysical Phenomena · Physics 2024-07-29 C. Pellegrino , M. Modjaz , Y. Takei , D. Tsuna , M. Newsome , T. Pritchard , R. Baer-Way , K. A. Bostroem , P. Chandra , P. Charalampopoulos , Y. Dong , J. Farah , D. A. Howell , C. McCully , S. Mohamed , E. Padilla Gonzalez , G. Terreran