P. Callanan — Scifaro

Analysis of optical spectroscopy and photometry of the type I X-ray bursting system UW CrB

UW Coronae Borealis (UW CrB) is a low mass X-ray binary that shows both Type 1 X-ray and optical bursts, which typically last for 20 s. The system has a binary period of close to 2 hours and is thought to have a relatively high inclination…

High Energy Astrophysical Phenomena · Physics 2025-06-11 M. R. Kennedy , P. Callanan , P. M. Garnavich , R. P. Breton , A. J. Brown , N. Castro Segura , V. S. Dhillon , M. J. Dyer , J. Garbutt , S. Fijma , M. J. Green , P. Hakala , F. Jiminez-Ibarra , P. Kerry , S. Littlefair , J. Munday , P. A. Mason , D. Mata-Sanchez , T. Munoz-Darias , S. Parsons , I. Pelisoli , D. Sahman

First Results from the REAL-time Transient Acquisition backend (REALTA) at the Irish LOFAR station

Modern radio interferometers such as the LOw Frequency ARray (LOFAR) are capable of producing data at hundreds of gigabits to terabits per second. This high data rate makes the analysis of radio data cumbersome and computationally…

Instrumentation and Methods for Astrophysics · Physics 2021-11-03 P. C. Murphy , P. Callanan , J. McCauley , D. J. McKenna , D. Ó Fionnagáin , C. K. Louis , M. P. Redman , L. A. Cañizares , E. P. Carley , S. A. Maloney , B. Coghlan , M. Daly , J. Scully , J. Dooley , V. Gajjar , C. Giese , A. Brennan , E. F. Keane , C. A. Maguire , J. Quinn , S. Mooney , A. M. Ryan , J. Walsh , C. M. Jackman , A. Golden , T. P. Ray , J. G. Doyle , J. Rigney , M. Burton , P. T. Gallagher

Optical spectra of FO Aquarii during low and high accretion rates

Between May 2016 and September 2018, the intermediate polar (IP) FO Aquarii exhibited two distinct low states and one failed low state. We present optical spectroscopy of FO Aquarii throughout this period, making this the first detailed…

Solar and Stellar Astrophysics · Physics 2020-06-03 M. R. Kennedy , P. M. Garnavich , C. Littlefield , T. R. Marsh , P. Callanan , R. P. Breton , T. Augusteijn , R. M. Wagner , R. P. Ashley , M. Neric

The THESEUS space mission concept: science case, design and expected performances

THESEUS is a space mission concept aimed at exploiting Gamma-Ray Bursts for investigating the early Universe and at providing a substantial advancement of multi-messenger and time-domain astrophysics. These goals will be achieved through a…

Instrumentation and Methods for Astrophysics · Physics 2018-06-13 L. Amati , P. O'Brien , D. Goetz , E. Bozzo , C. Tenzer , F. Frontera , G. Ghirlanda , C. Labanti , J. P. Osborne , G. Stratta , N. Tanvir , R. Willingale , P. Attina , R. Campana , A. J. Castro-Tirado , C. Contini , F. Fuschino , A. Gomboc , R. Hudec , P. Orleanski , E. Renotte , T. Rodic , Z. Bagoly , A. Blain , P. Callanan , S. Covino , A. Ferrara , E. Le Floch , M. Marisaldi , S. Mereghetti , P. Rosati , A. Vacchi , P. D'Avanzo , P. Giommi , A. Gomboc , S. Piranomonte , L. Piro , V. Reglero , A. Rossi , A. Santangelo , R. Salvaterra , G. Tagliaferri , S. Vergani , S. Vinciguerra , M. Briggs , E. Campolongo , R. Ciolfi , V. Connaughton , B. Cordier , B. Morelli , M. Orlandini , C. Adami , A. Argan , J. -L. Atteia , N. Auricchio , L. Balazs , G. Baldazzi , S. Basa , R. Basak , P. Bellutti , M. G. Bernardini , G. Bertuccio , J. Braga , M. Branchesi , S. Brandt , E. Brocato , C. Budtz-Jorgensen , A. Bulgarelli , L. Burderi , J. Camp , S. Capozziello , J. Caruana , P. Casella , B. Cenko , P. Chardonnet , B. Ciardi , S. Colafrancesco , M. G. Dainotti , V. D'Elia , D. De Martino , M. De Pasquale , E. Del Monte , M. Della Valle , A. Drago , Y. Evangelista , M. Feroci , F. Finelli , M. Fiorini , J. Fynbo , A. Gal-Yam , B. Gendre , G. Ghisellini , A. Grado , C. Guidorzi , M. Hafizi , L. Hanlon , J. Hjorth , L. Izzo , L. Kiss , P. Kumar , I. Kuvvetli , M. Lavagna , T. Li , F. Longo , M. Lyutikov , U. Maio , E. Maiorano , P. Malcovati , D. Malesani , R. Margutti , A. Martin-Carrillo , N. Masetti , S. McBreen , R. Mignani , G. Morgante , C. Mundell , H. U. Nargaard-Nielsen , L. Nicastro , E. Palazzi , S. Paltani , F. Panessa , G. Pareschi , A. Pe'er , A. V. Penacchioni , E. Pian , E. Piedipalumbo , T. Piran , G. Rauw , M. Razzano , A. Read , L. Rezzolla , P. Romano , R. Ruffini , S. Savaglio , V. Sguera , P. Schady , W. Skidmore , L. Song , E. Stanway , R. Starling , M. Topinka , E. Troja , M. van Putten , E. Vanzella , S. Vercellone , C. Wilson-Hodge , D. Yonetoku , G. Zampa , N. Zampa , B. Zhang , B. B. Zhang , S. Zhang , S. -N. Zhang , A. Antonelli , F. Bianco , S. Boci , M. Boer , M. T. Botticella , O. Boulade , C. Butler , S. Campana , F. Capitanio , A. Celotti , Y. Chen , M. Colpi , A. Comastri , J. -G. Cuby , M. Dadina , A. De Luca , Y. -W. Dong , S. Ettori , P. Gandhi , E. Geza , J. Greiner , S. Guiriec , J. Harms , M. Hernanz , A. Hornstrup , I. Hutchinson , G. Israel , P. Jonker , Y. Kaneko , N. Kawai , K. Wiersema , S. Korpela , V. Lebrun , F. Lu , A. MacFadyen , G. Malaguti , L. Maraschi , A. Melandri , M. Modjaz , D. Morris , N. Omodei , A. Paizis , P. Pata , V. Petrosian , A. Rachevski , J. Rhoads , F. Ryde , L. Sabau-Graziati , N. Shigehiro , M. Sims , J. Soomin , D. Szecsi , Y. Urata , M. Uslenghi , L. Valenziano , G. Vianello , S. Vojtech , D. Watson , J. Zicha

X-ray observations of FO Aqr during the 2016 low state

We present the first ever X-ray data taken of an intermediate polar, FO Aqr, when in a low accretion state and during the subsequent recovery. The Swift and Chandra X-ray data taken during the low accretion state in July 2016 both show a…

Solar and Stellar Astrophysics · Physics 2017-05-31 M. R. Kennedy , P. M. Garnavich , C. Littlefield , P. Callanan , K. Mukai , E. Aadland , M. M. Kotze , E. J. Kotze

XMM-Newton Observations of the Peculiar Cataclysmic Variable Lanning 386: X-ray evidence for a Magnetic Primary

We present the first X-ray observations of the eclipsing cataclysmic variables Lanning 386 and MASTER OTJ192328.22+612413.5, possible SW Sextantis systems. The X-ray light curve of Lanning 386 shows deep eclipses, similar to the eclipses…

High Energy Astrophysical Phenomena · Physics 2017-04-10 M. R. Kennedy , P. Callanan , P. M. Garnavich , M. Fausnaugh , J. C. Zinn

The new eclipsing CV MASTER OTJ192328.22+612413.5 - a possible SW Sextantis Star

We present optical photometry and spectroscopy of the new eclipsing Cataclysmic Variable MASTER OTJ192328.22+612413.5, discovered by the MASTER team. We find the orbital period to be P=0.16764612(5) day /4.023507(1) hour. The depth of the…

Solar and Stellar Astrophysics · Physics 2016-07-13 M. R. Kennedy , P. Callanan , P. M. Garnavich , P. Szkody , S. Bounane , B. M. Rose , P. Bendjoya , L. Abe , J. P. Rivet , O. Suarez

Multi-wavelength Observations of the Binary System PSR B1259-63/LS~2883 around the 2014 Periastron Passage

We report on the results of the extensive multi-wavelength campaign from optical to GeV gamma-rays of the 2014 periastron passage of PSR B1259-63, which is a unique high-mass gamma-ray emitting binary system with a young pulsar companion.…

High Energy Astrophysical Phenomena · Physics 2015-10-14 M. Chernyakova , A. Neronov , B. van Soelen , P. Callanan , L. O'Shaughnessy , Iu. Babyk , S. Tsygankov , Ie. Vovk , R. Krivonos , J. A. Tomsick , D. Malyshev , J. Li , K. Wood , D. Torres , S. Zhang , P. Kretschmar , M. V. McSwain , D. Buckley , C. Koen

Infrared Observations and Energetic Outburst of GRS 1915+105

Multiple near-infrared wavelengths observations, carried out since 1993 on the galactic superluminal source of relativistic ejections GRS 1915+105, have yielded three important results. 1) The infrared counterpart of GRS 1915+105 exhibits…

Astrophysics · Physics 2007-05-23 S. Chaty , I. F. Mirabel , L. F. Rodriguez , P. -A. Duc , M. Sauvage , A. J. Castro-Tirado , P. Callanan