Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Sean N. Pike"'
Return to the Forgotten Ultraluminous X-Ray Source: A Broadband NICER+NuSTAR Study of NGC 4190 ULX-1
Autor:
Hannah P. Earnshaw, Matteo Bachetti, Murray Brightman, Felix Fürst, Fiona A. Harrison, Matthew Middleton, Renee Ludlam, Sean N. Pike, Daniel Stern, Dominic J. Walton
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 2, p 111 (2024)
We observed the nearby and relatively understudied ultraluminous X-ray source (ULX) NGC 4190 ULX-1 jointly with Neutron Star Interior Composition Explorer (NICER) and NuSTAR to investigate its broadband spectrum, timing properties, and spectral varia
Externí odkaz:
https://doaj.org/article/fbd55caeb1fe4f54a317f77c1ddfa4ac
Autor:
Mason Ng, Andrew K. Hughes, Jeroen Homan, Jon M. Miller, Sean N. Pike, Diego Altamirano, Peter Bult, Deepto Chakrabarty, D. J. K. Buisson, Benjamin M. Coughenour, Rob Fender, Sebastien Guillot, Tolga Güver, Gaurava K. Jaisawal, Amruta D. Jaodand, Christian Malacaria, James C. A. Miller-Jones, Andrea Sanna, Gregory R. Sivakoff, Tod E. Strohmayer, John A. Tomsick, Jakob van den Eijnden
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 2, p 232 (2024)
We report on X-ray (NICER/NuSTAR/MAXI/Swift) and radio (MeerKAT) timing and spectroscopic analysis from a 3 month monitoring campaign in 2022 of a high-intensity outburst of the dipping neutron star low-mass X-ray binary 1A 1744−361. The 0.5–6.8
Externí odkaz:
https://doaj.org/article/5ccdef75a9bf4d379adfc148e20856db
Autor:
Sean N. Pike, Mutsumi Sugizaki, Jakob van den Eijnden, Benjamin Coughenour, Amruta D. Jaodand, Tatehiro Mihara, Sara E. Motta, Hitoshi Negoro, Aarran W. Shaw, Megumi Shidatsu, John A. Tomsick
Publikováno v:
The Astrophysical Journal, Vol 954, Iss 1, p 48 (2023)
We present Monitor of All-sky X-ray Image (MAXI) and Nuclear Spectroscopic Telescope Array (NuSTAR) observations of the Be X-ray binary, MAXI J0655−013, in outburst. NuSTAR observed the source once early in the outburst, when spectral analysis yiel
Externí odkaz:
https://doaj.org/article/c1b71db6a01e422588ee05ae26a8a0ec
Autor:
Matteo Bachetti, Marianne Heida, Thomas Maccarone, Daniela Huppenkothen, Gian Luca Israel, Didier Barret, Murray Brightman, McKinley Brumback, Hannah P. Earnshaw, Karl Forster, Felix Fürst, Brian W. Grefenstette, Fiona A. Harrison, Amruta D. Jaodand, Kristin K. Madsen, Matthew Middleton, Sean N. Pike, Maura Pilia, Juri Poutanen, Daniel Stern, John A. Tomsick, Dominic J. Walton, Natalie Webb, Jörn Wilms
Publikováno v:
The Astrophysical Journal
The Astrophysical Journal, 2022, 937, ⟨10.3847/1538-4357/ac8d67⟩
The Astrophysical Journal, 2022, 937, ⟨10.3847/1538-4357/ac8d67⟩
M82 X-2 is the first pulsating ultraluminous X-ray source (PULX) discovered. The luminosity of these extreme pulsars, if isotropic, implies an extreme mass transfer rate. An alternative is to assume a much lower mass transfer rate, but with an appare
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::93647e319255c44286749a620b688aba
https://eprints.soton.ac.uk/472491/
https://eprints.soton.ac.uk/472491/
Discovery of a new supergiant fast X-ray transient MAXI J0709-159 associated with the Be star LY CMa
Autor:
Mutsumi Sugizaki, Tatehiro Mihara, Kohei Kobayashi, Hitoshi Negoro, Megumi Shidatsu, Sean N Pike, Wataru Iwakiri, Sota Urabe, Motoko Serino, Nobuyuki Kawai, Motoki Nakajima, Jamie A Kennea, Zhu Liu
We report on the discovery of a new supergiant fast X-ray transient (SFXT), MAXI J0709$-$159, and its identification with LY CMa (also known as HD 54786). On 2022 January 25, a new flaring X-ray object named MAXI J0709$-$159, was detected by Monitor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51822a4ab0626ec357c0c367b3399dfe
http://arxiv.org/abs/2207.01969
http://arxiv.org/abs/2207.01969
Autor:
Sean N. Pike, Hitoshi Negoro, John A. Tomsick, Matteo Bachetti, McKinley Brumback, Riley M. T. Connors, Javier A. García, Brian Grefenstette, Jeremy Hare, Fiona A. Harrison, Amruta Jaodand, R. M. Ludlam, Guglielmo Mastroserio, Tatehiro Mihara, Megumi Shidatsu, Mutsumi Sugizaki, Ryohei Takagi
We present the results of MAXI monitoring and two NuSTAR observations of the recently discovered faint X-ray transient MAXI J1848-015. Analysis of the MAXI light-curve shows that the source underwent a rapid flux increase beginning on 2020 December 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f7bebecdd658fa64b81f98fbd3ed0a6
https://resolver.caltech.edu/CaltechAUTHORS:20220304-000054911
https://resolver.caltech.edu/CaltechAUTHORS:20220304-000054911
Autor:
George B. Lansbury, V. Rana, Timothy P.L. Roberts, P. A. Evans, D. Stern, Fiona A. Harrison, Andrew C. Fabian, Ruben Salvaterra, Matthew J. Middleton, Dom Walton, Brian W. Grefenstette, X. Song, Hannah P. Earnshaw, M. Heida, Felix Fürst, Murray Brightman, Matteo Bachetti, G. A. Rodríguez Castillo, G. L. Israel, Sean N. Pike
Publikováno v:
Monthly notices of the Royal Astronomical Society, 2021, Vol.501(1), pp.1002-1012 [Peer Reviewed Journal]
We report on the discovery of a new, transient ultraluminous X-ray source (ULX) in the galaxy NGC 7090. This new ULX, which we refer to as NGC 7090 ULX3, was discovered via monitoring with $Swift$ during 2019-20, and to date has exhibited a peak lumi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::efbf6c2098c9e29a2828306ff76f4b51
http://arxiv.org/abs/2011.08870
http://arxiv.org/abs/2011.08870
Autor:
Dominic J. Walton, Felix Fürst, Marianne Heida, Sean N. Pike, Fiona A. Harrison, Didier Barret, Natalie A. Webb, Hannah P. Earnshaw, Brian W. Grefenstette, Murray Brightman, Daniel Stern
Publikováno v:
Astrophys.J.
Astrophys.J., 2019, 881, pp.38. ⟨10.3847/1538-4357/ab20cd⟩
Astrophys.J., 2019, 881, pp.38. ⟨10.3847/1538-4357/ab20cd⟩
Two recent observations of the nearby galaxy NGC 6946 with NuSTAR, one simultaneous with an XMM-Newton observation, provide an opportunity to examine its population of bright accreting sources from a broadband perspective. We study the three known ul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad22a4f07f61ed865ce37d8de069a1ab
https://hal.archives-ouvertes.fr/hal-02221340
https://hal.archives-ouvertes.fr/hal-02221340
Autor:
Matteo Bachetti, John A. Tomsick, Fiona A. Harrison, Kristin K. Madsen, Jörn Wilms, Sean N. Pike, McKinley C. Brumback, Katja Pottschmidt, Felix Fürst
We report on NuSTAR observations of transient pulsations in the neutron star X-ray binary SMC X-1. The transition from non-pulsing to pulsing states was not accompanied by a large change in flux. Instead, both pulsing and non-pulsing states were obse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d93d5a83d50d98b358da4ed390a4cfde
http://hdl.handle.net/20.500.12386/29427
http://hdl.handle.net/20.500.12386/29427
Autor:
Fiona A. Harrison, Takao Kitaguchi, W. Rick Cook, Sean N. Pike, Brian W. Grefenstette, Hiromasa Miyasaka, Kristin K. Madsen
NuSTAR (the Nuclear Spectroscopic Telescope ARray) is a NASA Small Explorer (SMEX) mission launched in June of 2012. Since its launch, NuSTAR has been the preeminent instrument for spectroscopic analysis of the hard X-ray sky over the 3-80 keV bandpa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f8e43ac52d8ac2497a31f0f1459df7f
https://resolver.caltech.edu/CaltechAUTHORS:20181207-145745237
https://resolver.caltech.edu/CaltechAUTHORS:20181207-145745237