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The nature of supernovae 2010O and 2010P in Arp 299 - I. Near-infrared and optical evolution

We present near-infrared and optical photometry, plus optical spectroscopy of two stripped-envelope supernovae (SNe) 2010O and 2010P that exploded in two different components of an interacting luminous infrared galaxy Arp 299 within only a…

Solar and Stellar Astrophysics · Physics 2014-05-01 E. Kankare , S. Mattila , S. Ryder , M. Fraser , A. Pastorello , N. Elias-Rosa , C. Romero-Canizales , A. Alberdi , V. -P. Hentunen , R. Herrero-Illana , J. Kotilainen , M. -A. Perez-Torres , P. Vaisanen

The nature of supernovae 2010O and 2010P in Arp 299 - II. Radio emission

We report radio observations of two stripped-envelope supernovae (SNe), 2010O and 2010P, which exploded within a few days of each other in the luminous infrared galaxy Arp 299. Whilst SN 2010O remains undetected at radio frequencies, SN…

Astrophysics of Galaxies · Physics 2015-06-19 C. Romero-Cañizales , R. Herrero-Illana , M. A. Pérez-Torres , A. Alberdi , E. Kankare , F. E. Bauer , S. D. Ryder , S. Mattila , J. E. Conway , R. J. Beswick , T. W. B. Muxlow

A Transient Supergiant X-ray Binary in IC10. An Extragalactic SFXT?

We report the discovery of a large amplitude (factor of $\sim$100) X-ray transient (IC 10 X-2, CXOU J002020.99+591758.6) in the nearby dwarf starburst galaxy IC10 during our Chandra monitoring project. Based on the X-ray timing and spectral…

High Energy Astrophysical Phenomena · Physics 2015-06-22 Silas Laycock , Rigel Cappallo , Kathleen Oram , Andrew Balchunas

SAX J1810.8-2609: an X-ray bursting transient

We report on the BeppoSAX/WFC observation of a strong type-I X-ray burst from the recently discovered transient source SAX J1810.8-2609. The observed event showed evidence of photospheric radius expansion due to super-Eddington burst…

Astrophysics · Physics 2007-05-23 M. Cocchi , A. Bazzano , L. Natalucci , P. Ubertini , J. Heise , J. M. Muller , M. J. S. Smith , J. J. M. in 't Zand

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

A peculiar thermonuclear X-ray burst from the transiently accreting neutron star SAX J1810.8-2609

We report on a thermonuclear (type-I) X-ray burst that was detected from the neutron star low-mass X-ray binary SAX J1810.8-2609 in 2007 with Swift. This event was longer (~20 min) and more energetic (a radiated energy of Eb~6.5E39 erg)…

High Energy Astrophysical Phenomena · Physics 2015-06-11 N. Degenaar , R. Wijnands

From SN2010da to NGC 300 ULX-1: Ten Years of Observations of an Unusual High Mass X-ray Binary in NGC 300

In 2010 May, an intermediate luminosity optical transient was discovered in the nearby galaxy NGC 300 by a South African amateur astronomer. In the decade since its discovery, multi-wavelength observations of the misnamed ``SN 2010da'' have…

High Energy Astrophysical Phenomena · Physics 2020-02-12 Breanna A. Binder , Stefania Carpano , Marianne Heida , Ryan Lau

A giant outburst two years before the core-collapse of a massive star

The death of massive stars produces a variety of supernovae, which are linked to the structure of the exploding stars. The detection of several precursor stars of Type II supernovae have been reported, however we do not yet have direct…

Astrophysics · Physics 2008-11-26 A. Pastorello , S. J. Smartt , S. Mattila , J. J. Eldridge , D. Young , K. Itagaki , H. Yamaoka , H. Navasardyan , S. Valenti , F. Patat , I. Agnoletto , T. Augusteijn , S. Benetti , E. Cappellaro , T. Boles , J. -M. Bonnet-Bidaud , M. T. Botticella , F. Bufano , C. Cao , J. Deng , M. Dennefeld , N. Elias-Rosa , A. Harutyunyan , F. P. Keenan , T. Iijima , V. Lorenzi , P. A. Mazzali , X. Meng , S. Nakano , T. B. Nielsen , J. V. Smoker , V. Stanishev , M. Turatto , D. Xu , L. Zampieri

The optical counterpart to the peculiar X-ray transient XTE J1739-302

The weak X-ray transient XTE J1739-302, characterized by extremely short outbursts, has recently been identified with a reddened star. Here we present spectroscopy and photometry of the counterpart, identifying it as a O8Iab(f) supergiant…

Astrophysics · Physics 2009-11-13 Ignacio Negueruela , David M. Smith , Thomas E. Harrison , Jose Miguel Torrejon

A Wolf-Rayet/black-hole X-ray binary candidate in NGC 300

Context. Wolf Rayet/black hole binaries are believed to exist as a later evolutionary product of high-mass X-ray binaries. Hundreds of such binaries may exist in galaxies, but only a few of them are close enough to be observed as X-ray…

Astrophysics · Physics 2009-11-11 S. Carpano , A. M. T. Pollock , J. Wilms , M. Ehle , M. Schirmer

The Intermediate Luminosity Optical Transient SN 2010da: The Progenitor, Eruption and Aftermath of a Peculiar Supergiant High-mass X-ray Binary

We present optical spectroscopy, ultraviolet to infrared imaging and X-ray observations of the intermediate luminosity optical transient (ILOT) SN 2010da in NGC 300 (d=1.86 Mpc) spanning from -6 to +6 years relative to the time of outburst…

Solar and Stellar Astrophysics · Physics 2016-10-17 V. Ashley Villar , Edo Berger , Ryan Chornock , Raffaella Margutti , Tanmoy Laskar , Peter J. Brown , Peter K. Blanchard , Ian Czekala , Ragnhild Lunnan , Mark T. Reynolds

The Progenitor of the Type IIb SN 2008ax Revisited

Hubble Space Telescope observations of the site of the supernova (SN) 2008ax obtained in 2011 and 2013 reveal that the possible progenitor object detected in pre-explosion images was in fact multiple. Four point sources are resolved in the…

Solar and Stellar Astrophysics · Physics 2015-10-07 Gastón Folatelli , Melina C. Bersten , Hanindyo Kuncarayakti , Omar G. Benvenuto , Keiichi Maeda , Ken'ichi Nomoto

An Intermediate Luminosity Transient in NGC300: The Eruption of a Dust-Enshrouded Massive Star

[abridged] We present multi-epoch high-resolution optical spectroscopy, UV/radio/X-ray imaging, and archival Hubble and Spitzer observations of an intermediate luminosity optical transient recently discovered in the nearby galaxy NGC300. We…

High Energy Astrophysical Phenomena · Physics 2009-07-24 E. Berger , A. M. Soderberg , R. A. Chevalier , C. Fransson , R. J. Foley , D. C. Leonard , J. H. Debes , A. M. Diamond-Stanic , A. K. Dupree , I. I. Ivans , J. Simmerer , I. B. Thompson , C. A. Tremonti

SAX J1810.8-2609: A New Hard X-ray Bursting Transient

The transient X-ray source SAX J1810.8-2609 was discovered on 1998, March 10 with the Wide Field Cameras on board the BeppoSAX satellite, while observing the Galactic Bulge in the 2-28 keV energy range. On March 11, a strong type-I X-ray…

Astrophysics · Physics 2009-10-31 L. Natalucci , A. Bazzano , M. Cocchi , P. Ubertini , J. Heise , E. Kuulkers , J. J. M. in 't Zand , M. J. S. Smith

The type IIb SN 2008ax: the nature of the progenitor

A source coincident with the position of the type IIb supernova (SN) 2008ax is identified in pre-explosion Hubble Space Telescope (HST) Wide Field Planetary Camera 2 observations in three optical filters. We identify and constrain two…

Astrophysics · Physics 2009-11-13 R. M. Crockett , J. J. Eldridge , S. J. Smartt , A. Pastorello , A. Gal-Yam , D. B. Fox , D. C. Leonard , M. M. Kasliwal , S. Mattila , J. R. Maund , A. W. Stephens , I. J. Danziger

SN 2005bf: A Possible Transition Event Between Type Ib/c Supernovae and Gamma Ray Bursts

We present u'g'r'i'BV photometry and optical spectroscopy of the Type Ib/Ic SN 2005bf covering the first ~100 days following discovery. The u'g'BV light curves displayed a double-peaked morphology, which is among Type Ib/Ic supernovae. The…

Astrophysics · Physics 2009-11-13 Gaston Folatelli , Carlos Contreras , M. M. Phillips , S. E. Woosley , Sergei Blinnikov , Nidia Morrell , Nicholas B. Suntzeff , Brian L. Lee , Mario Hamuy , Sergio Gonzalez , Wojtek Krzeminski , Miguel Roth , Weidong Li , Alexei V. Filippenko , Ryan J. Foley , W. L. Freedman , Barry F. Madore , S. E. Persson , David Murphy , Samuel Boissier , Gaspar Galaz , Luis Gonzalez , P. J. McCarthy , Andrew McWilliam , Wojtek Pych

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

A deeper search for the progenitor of the Type Ic Supernova 2002ap

(Abridged) We present a search for the progenitor star of the Type Ic Supernova 2002ap in deep, high quality pre-explosion observations taken with the Canada-France-Hawaii Telescope (CFHT). Aligning high-resolution Hubble Space Telescope…

Astrophysics · Physics 2007-10-03 R. M. Crockett , S. J. Smartt , J. J. Eldridge , S. Mattila , D. R. Young , A. Pastorello , J. R. Maund , C. R. Benn , I. Skillen

Ultra-bright optical transients are linked with type Ic supernovae

Recent searches by unbiased, wide-field surveys have uncovered a group of extremely luminous optical transients. The initial discoveries of SN 2005ap by the Texas Supernova Search and SCP-06F6 in a deep Hubble pencil beam survey were…

Solar and Stellar Astrophysics · Physics 2015-05-19 A. Pastorello , S. J. Smartt , M. T. Botticella , K. Maguire , M. Fraser , K. Smith , R. Kotak , L. Magill , S. Valenti , D. R. Young , S. Gezari , F. Bresolin , R. Kudritzki , D. A. Howell , A. Rest , N. Metcalfe , S. Mattila , E. Kankare , K. Y. Huang , Y. Urata , W. S. Burgett , K. C. Chambers , T. Dombeck , T. Flewelling , T. Grav , J. N. Heasley , K. W. Hodapp , N. Kaiser , G. A. Luppino , R. H. Lupton , E. A. Magnier , D. G. Monet , J. S. Morgan , P. M. Onaka , P. A. Price , P. H. Rhoads , W. A. Siegmund , C. W. Stubbs , W. E. Sweeney , J. L. Tonry , R. J. Wainscoat , M. F. Waterson , C. Waters , C. G. Wynn-Williams

GRB060602B = Swift J1749.4-2807: an unusual transiently accreting neutron-star X-ray binary

We present an analysis of the Swift BAT and XRT data of GRB060602B, which is most likely an accreting neutron star in a binary system and not a gamma-ray burst. Our analysis shows that the BAT burst spectrum is consistent with a…

Astrophysics · Physics 2016-03-02 Rudy Wijnands , Evert Rol , Ed M. Cackett , Rhaana L. C. Starling , Ron A. Remillard