Zobrazeno 1 - 10
of 125
pro vyhledávání: '"Sebastien Guillot"'
Autor:
Nathan Rutherford, Melissa Mendes, Isak Svensson, Achim Schwenk, Anna L. Watts, Kai Hebeler, Jonas Keller, Chanda Prescod-Weinstein, Devarshi Choudhury, Geert Raaijmakers, Tuomo Salmi, Patrick Timmerman, Serena Vinciguerra, Sebastien Guillot, James M. Lattimer
Publikováno v:
The Astrophysical Journal Letters, Vol 971, Iss 1, p L19 (2024)
Pulse profile modeling of X-ray data from the Neutron Star Interior Composition Explorer is now enabling precision inference of neutron star mass and radius. Combined with nuclear physics constraints from chiral effective field theory ( χ EFT), and
Externí odkaz:
https://doaj.org/article/e4e6b5746b5c4e52963bcc4cf4f11114
Autor:
Devarshi Choudhury, Tuomo Salmi, Serena Vinciguerra, Thomas E. Riley, Yves Kini, Anna L. Watts, Bas Dorsman, Slavko Bogdanov, Sebastien Guillot, Paul S. Ray, Daniel J. Reardon, Ronald A. Remillard, Anna V. Bilous, Daniela Huppenkothen, James M. Lattimer, Nathan Rutherford, Zaven Arzoumanian, Keith C. Gendreau, Sharon M. Morsink, Wynn C. G. Ho
Publikováno v:
The Astrophysical Journal Letters, Vol 971, Iss 1, p L20 (2024)
We report Bayesian inference of the mass, radius, and hot X-ray emitting region properties—using data from the Neutron Star Interior Composition ExploreR (NICER)—for the brightest rotation-powered millisecond X-ray pulsar, PSR J0437−4715. Our m
Externí odkaz:
https://doaj.org/article/2c6368f0ce8648789872a7dfccf78f83
Autor:
Mason Ng, Paul S. Ray, Andrea Sanna, Tod E. Strohmayer, Alessandro Papitto, Giulia Illiano, Arianna C. Albayati, Diego Altamirano, Tuğba Boztepe, Tolga Güver, Deepto Chakrabarty, Zaven Arzoumanian, D. J. K. Buisson, Elizabeth C. Ferrara, Keith C. Gendreau, Sebastien Guillot, Jeremy Hare, Gaurava K. Jaisawal, Christian Malacaria, Michael T. Wolff
Publikováno v:
The Astrophysical Journal Letters, Vol 968, Iss 1, p L7 (2024)
We present the discovery, with the Neutron Star Interior Composition Explorer (NICER), that SRGA J144459.2−604207 is a 447.9 Hz accreting millisecond X-ray pulsar (AMXP), which underwent a 4 week long outburst starting on 2024 February 15. The AMXP
Externí odkaz:
https://doaj.org/article/1b3411362c0c421dabc7e92770c25af5
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:
Serena Vinciguerra, Tuomo Salmi, Anna L. Watts, Devarshi Choudhury, Thomas E. Riley, Paul S. Ray, Slavko Bogdanov, Yves Kini, Sebastien Guillot, Deepto Chakrabarty, Wynn C. G. Ho, Daniela Huppenkothen, Sharon M. Morsink, Zorawar Wadiasingh, Michael T. Wolff
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 1, p 62 (2024)
In 2019 the NICER collaboration published the first mass and radius inferred for PSR J0030+0451, thanks to NICER observations, and consequent constraints on the equation of state characterizing dense matter. Two independent analyses found a mass of
Externí odkaz:
https://doaj.org/article/93077cc3ddcb42978730e1aa2cfe7f8b
Autor:
Z. Funda Bostancı, Tuğba Boztepe, Tolga Güver, Tod E. Strohmayer, Yuri Cavecchi, Ersin Göğüş, Diego Altamirano, Peter Bult, Deepto Chakrabarty, Sebastien Guillot, Gaurava K. Jaisawal, Christian Malacaria, Giulio C. Mancuso, Andrea Sanna, Jean H. Swank
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 1, p 55 (2023)
We present temporal and time-resolved spectral analyses of all the thermonuclear X-ray bursts observed from the neutron star low-mass X-ray binary 4U 1728−34 with NICER from 2017 June to 2019 September. In total, we detected 11 X-ray bursts from th
Externí odkaz:
https://doaj.org/article/6905d65800e64515a1cc3ff9c8650531
Autor:
Tuomo Salmi, Serena Vinciguerra, Devarshi Choudhury, Anna L. Watts, Wynn C. G. Ho, Sebastien Guillot, Yves Kini, Bas Dorsman, Sharon M. Morsink, Slavko Bogdanov
Publikováno v:
The Astrophysical Journal, Vol 956, Iss 2, p 138 (2023)
We present an analysis of the effects of uncertainties in the atmosphere models on the radius, mass, and other neutron star parameter constraints for the NICER observations of rotation-powered millisecond pulsars. To date, NICER has applied the X-ray
Externí odkaz:
https://doaj.org/article/9d7bc9be7d3c4f0a9a118efde847dc7f
Autor:
Marcus E. Lower, George Younes, Paul Scholz, Fernando Camilo, Liam Dunn, Simon Johnston, Teruaki Enoto, John M. Sarkissian, John E. Reynolds, David M. Palmer, Zaven Arzoumanian, Matthew G. Baring, Keith Gendreau, Ersin Göğüş, Sebastien Guillot, Alexander J. van der Horst, Chin-Ping Hu, Chryssa Kouveliotou, Lin Lin, Christian Malacaria, Rachael Stewart, Zorawar Wadiasingh
Publikováno v:
The Astrophysical Journal, Vol 945, Iss 2, p 153 (2023)
We report the radio and high-energy properties of a new outburst from the radio-loud magnetar 1E 1547.0−5408. Following the detection of a short burst from the source with Swift-BAT on 2022 April 7, observations by NICER detected an increased flux
Externí odkaz:
https://doaj.org/article/39e67f515aba4874b94b2f1cf40c8f07
Autor:
Tuomo Salmi, Serena Vinciguerra, Devarshi Choudhury, Thomas E. Riley, Anna L. Watts, Ronald A. Remillard, Paul S. Ray, Slavko Bogdanov, Sebastien Guillot, Zaven Arzoumanian, Cecilia Chirenti, Alexander J. Dittmann, Keith C. Gendreau, Wynn C. G. Ho, M. Coleman Miller, Sharon M. Morsink, Zorawar Wadiasingh, Michael T. Wolff
Publikováno v:
The Astrophysical Journal, Vol 941, Iss 2, p 150 (2022)
We report a revised analysis for the radius, mass, and hot surface regions of the massive millisecond pulsar PSR J0740+6620, studied previously with joint fits to NICER and XMM-Newton data by Riley et al. (2021) and Miller et al. (2021). We perform a
Externí odkaz:
https://doaj.org/article/074d00f700e34a1980dcf32162165168
Autor:
Wynn C. G. Ho, Lucien Kuiper, Cristóbal M. Espinoza, Sebastien Guillot, Paul S. Ray, D. A. Smith, Slavko Bogdanov, Danai Antonopoulou, Zaven Arzoumanian, Michał Bejger, Teruaki Enoto, Paolo Esposito, Alice K. Harding, Brynmor Haskell, Natalia Lewandowska, Chandreyee Maitra, Georgios Vasilopoulos
Publikováno v:
Astrophys.J.
Astrophys.J., 2023, 939 (1), pp.7. ⟨10.3847/1538-4357/ac8743⟩
Astrophys.J., 2023, 939 (1), pp.7. ⟨10.3847/1538-4357/ac8743⟩
Measuring a pulsar's rotational evolution is crucial to understanding the nature of the pulsar. Here we provide updated timing models for the rotational evolution of six pulsars, five of which are rotation phase-connected using primarily NICER X-ray
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c10b39f02e5ffeb69dfe12896ab54f1b
https://hal.science/hal-03676099
https://hal.science/hal-03676099