Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Simin Mahmoodifar"'
Autor:
Alexander J. Dittmann, Anna L. Watts, M. Coleman Miller, Frederick K. Lamb, Keith C. Gendreau, Sharon M. Morsink, Simin Mahmoodifar, Sebastien Guillot, Craig B. Markwardt, Michael T. Wolff, Zorawar Wadiasingh, Alice K. Harding, Devarshi Choudhury, Wynn C. G. Ho, Slavko Bogdanov, Paul S. Ray, Zaven Arzoumanian, Thomas E. Riley, Tod E. Strohmayer
Publikováno v:
The Astrophysical journal letters
The Astrophysical journal letters, Bristol : IOP Publishing, 2021, 914 (1), pp.L15. ⟨10.3847/2041-8213/abfb79⟩
The Astrophysical Journal Letters
Astrophysical Journal Letters, 914(1). IOP Publishing Ltd.
The Astrophysical journal letters, Bristol : IOP Publishing, 2021, 914 (1), pp.L15. ⟨10.3847/2041-8213/abfb79⟩
The Astrophysical Journal Letters
Astrophysical Journal Letters, 914(1). IOP Publishing Ltd.
We describe the X-ray pulse profile models we use, and how we use them, to analyze Neutron Star Interior Composition Explorer (NICER) observations of rotation-powered millisecond pulsars to obtain information about the mass-radius relation of neutron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::243146e079a236ca87f34fe4f5ae0c49
https://hal.archives-ouvertes.fr/hal-03210357
https://hal.archives-ouvertes.fr/hal-03210357
Autor:
Slavko Bogdanov, Frederick K. Lamb, Simin Mahmoodifar, M. Coleman Miller, Sharon M. Morsink, Thomas E. Riley, Tod E. Strohmayer, Albert K. Tung, Anna L. Watts, Alexander J. Dittmann, Deepto Chakrabarty, Sebastien Guillot, Zaven Arzoumanian, Keith C. Gendreau
Publikováno v:
The Astrophysical Journal
Astrophys.J.
Astrophys.J., 2019, 887 (1), pp.L26. ⟨10.3847/2041-8213/ab5968⟩
The Astrophysical journal letters
The Astrophysical journal letters, Bristol : IOP Publishing, 2019, 887 (1), pp.L26. ⟨10.3847/2041-8213/ab5968⟩
Astrophysical Journal Letters, 887(1):L26. IOP Publishing Ltd.
Astrophys.J.
Astrophys.J., 2019, 887 (1), pp.L26. ⟨10.3847/2041-8213/ab5968⟩
The Astrophysical journal letters
The Astrophysical journal letters, Bristol : IOP Publishing, 2019, 887 (1), pp.L26. ⟨10.3847/2041-8213/ab5968⟩
Astrophysical Journal Letters, 887(1):L26. IOP Publishing Ltd.
We describe the model of surface emission from a rapidly rotating neutron star that is applied to Neutron Star Interior Composition Explorer X-ray data of millisecond pulsars in order to statistically constrain the neutron star mass-radius relation a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9451253aa31703b7e48b43e2c791ca83
Autor:
Sebastien Guillot, Renee M. Ludlam, J. J. M. in 't Zand, Gaurava K. Jaisawal, Jérôme Chenevez, Jonah Miller, Peter Bult, Christian Malacaria, P. Kosec, Laurens Keek, Simin Mahmoodifar, Zaven Arzoumanian, Diego Altamirano, Deepto Chakrabarty, Andrew C. Fabian, Tod E. Strohmayer, Keith C. Gendreau
Publikováno v:
The Astrophysical journal letters
The Astrophysical journal letters, Bristol : IOP Publishing, 2019, 878 (2), pp.L27. ⟨10.3847/2041-8213/ab25eb⟩
Astrophys.J.
Astrophys.J., 2019, 878 (2), pp.L27. ⟨10.3847/2041-8213/ab25eb⟩
Strohmayer, T E, Altamirano, D, Arzoumanian, Z, Bult, P M, Chakrabarty, D, Chenevez, J, Fabian, A C, Gendreau, K C, Guillot, S, In 't Zand, J J M, Jaisawal, G K, Keek, L, Kosec, P, Ludlam, R M, Mahmoodifar, S, Malacaria, C & Miller, J M 2019, ' NICER Discovers Spectral Lines during Photospheric Radius Expansion Bursts from 4U 1820−30: Evidence for Burst-driven Winds ', Astrophysical Journal Letters, vol. 878, no. 2, L27 . https://doi.org/10.3847/2041-8213/ab25eb
The Astrophysical Journal
The Astrophysical journal letters, Bristol : IOP Publishing, 2019, 878 (2), pp.L27. ⟨10.3847/2041-8213/ab25eb⟩
Astrophys.J.
Astrophys.J., 2019, 878 (2), pp.L27. ⟨10.3847/2041-8213/ab25eb⟩
Strohmayer, T E, Altamirano, D, Arzoumanian, Z, Bult, P M, Chakrabarty, D, Chenevez, J, Fabian, A C, Gendreau, K C, Guillot, S, In 't Zand, J J M, Jaisawal, G K, Keek, L, Kosec, P, Ludlam, R M, Mahmoodifar, S, Malacaria, C & Miller, J M 2019, ' NICER Discovers Spectral Lines during Photospheric Radius Expansion Bursts from 4U 1820−30: Evidence for Burst-driven Winds ', Astrophysical Journal Letters, vol. 878, no. 2, L27 . https://doi.org/10.3847/2041-8213/ab25eb
The Astrophysical Journal
We report the discovery with the Neutron Star Interior Composition Explorer (NICER) of narrow emission and absorption lines during photospheric radius expansion (PRE) X-ray bursts from the ultracompact binary 4U 1820-30. NICER observed the source in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13caf4ff80af935afb3fdc3a7eba0dd7
https://hal.archives-ouvertes.fr/hal-02273484
https://hal.archives-ouvertes.fr/hal-02273484
Autor:
Xiang-Dong Li, Jean in 't Zand, B. W. Stappers, Sudip Bhattacharyya, Slavko Bogdanov, Holger Stiele, Sharon M. Morsink, Tiziana Di Salvo, Zhaosheng Li, Robert D. Ferdman, Alessandro Riggio, Jin-Lu Qu, Wenfei Yu, Oleg Kargaltsev, R. Iaria, Xia Zhou, Joonas Nättilä, Gabriel Török, David Tsang, Aleksi Kurkela, Laura Tolos, Achim Schwenk, Ingo Tews, Ypeng Xu, Andrea Vacchi, Martin Urbanec, Andrea Santangelo, Xiao Yu Lai, Manuel Linares, Pavel Bakala, Altan Baykal, Anna L. Watts, Alexander Heger, Eva Šrámková, Andrea Sanna, Maurizio Falanga, Ang Li, M. Coleman Miller, Federico Bernardini, Edward F. Brown, Yuri Cavecchi, Jérôme Chenevez, Long Ji, Dieter H. Hartmann, Hendrik Schatz, Ignazio Bombaci, Shuang-Nan Zhang, Silvia Zane, Chanda Prescod-Weinstein, Victor Doroshenko, Kai Hebeler, Guobao Zhang, Tuomo Salmi, Fangjun Lu, Ming-Yu Ge, Melania Del Santo, Deepto Chakrabarty, Mariano Mendez, ShiJie Zheng, Wenda Zhang, S. K. Greif, Alessandro Patruno, Angelo Gambino, Nathalie Degenaar, Simin Mahmoodifar, Juri Poutanen, Marco Feroci, Thomas E. Riley, Shu Zhang, Andrea Possenti, Sebastien Guillot, Tod E. Strohmayer, Jeroen Homan, Can Güngör, Li-Ming Song, Renxin Xu
Publikováno v:
Recercat. Dipósit de la Recerca de Catalunya
instname
Science China-Physics, Mechanics & Astronomy
Science China: Physics, Mechanics and Astronomy, 62(2):29503. Science in China Press
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Science China Physics, Mechanics & Astronomy
Science china-Physics mechanics & astronomy, 62(2):029503. Science Press
arXiv
instname
Science China-Physics, Mechanics & Astronomy
Science China: Physics, Mechanics and Astronomy, 62(2):29503. Science in China Press
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Science China Physics, Mechanics & Astronomy
Science china-Physics mechanics & astronomy, 62(2):029503. Science Press
arXiv
In this White Paper we present the potential of the Enhanced X-ray Timing and Polarimetry (eXTP) mission for determining the nature of dense matter; neutron star cores host an extreme density regime which cannot be replicated in a terrestrial laborat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb45e6ab162de9f7132515101d200f0c
http://hdl.handle.net/20.500.12386/29101
http://hdl.handle.net/20.500.12386/29101
Autor:
Michael T. Wolff, Diego Altamirano, Tod E. Strohmayer, Jeroen Homan, Peter Bult, Keith C. Gendreau, Deepto Chakrabarty, Laurens Keek, Sebastien Guillot, Zaven Arzoumanian, Gaurava K. Jaisawal, Simin Mahmoodifar
Publikováno v:
Astrophys.J.
Astrophys.J., 2019, 878, pp.145. ⟨10.3847/1538-4357/ab20c4⟩
Mahmoodifar, S, Strohmayer, T E, Bult, P, Altamirano, D, Arzoumanian, Z, Chakrabarty, D, Gendreau, K C, Guillot, S, Homan, J, Jaisawal, G K, Keek, L & Wolff, M T 2019, ' NICER Observation of Unusual Burst Oscillations in 4U 1728-34 ', Astrophysical Journal, vol. 878, no. 2, 145 . https://doi.org/10.3847/1538-4357/ab20c4
Astrophys.J., 2019, 878, pp.145. ⟨10.3847/1538-4357/ab20c4⟩
Mahmoodifar, S, Strohmayer, T E, Bult, P, Altamirano, D, Arzoumanian, Z, Chakrabarty, D, Gendreau, K C, Guillot, S, Homan, J, Jaisawal, G K, Keek, L & Wolff, M T 2019, ' NICER Observation of Unusual Burst Oscillations in 4U 1728-34 ', Astrophysical Journal, vol. 878, no. 2, 145 . https://doi.org/10.3847/1538-4357/ab20c4
The Neutron Star Interior Composition Explorer (NICER) has observed seven thermonuclear X-ray bursts from the Low Mass X-ray Binary (LMXB) neutron star 4U 1728-34 from the start of the mission's operations until February of 2019. Three of these burst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::baa27b09c7eb8a15b198470c04b225fc
https://hal.archives-ouvertes.fr/hal-02290805
https://hal.archives-ouvertes.fr/hal-02290805
Autor:
Alexander J. Dittmann, Yang Soong, Frederick K. Lamb, Paul S. Ray, Keith C. Gendreau, R. S. Foster, Teruaki Enoto, Sharon M. Morsink, Sebastien Guillot, Alice K. Harding, K. S. Wood, Takashi Okajima, James M. Lattimer, Simin Mahmoodifar, Renee M. Ludlam, Wynn C. G. Ho, M. C. Miller, Slavko Bogdanov, Gregory Y. Prigozhin, Zaven Arzoumanian, Tod E. Strohmayer
Publikováno v:
Astrophys.J.
Astrophys.J., 2019, 887 (1), pp.L24. ⟨10.3847/2041-8213/ab50c5⟩
The Astrophysical journal letters
The Astrophysical journal letters, Bristol : IOP Publishing, 2019, 887 (1), pp.L24. ⟨10.3847/2041-8213/ab50c5⟩
Astrophys.J., 2019, 887 (1), pp.L24. ⟨10.3847/2041-8213/ab50c5⟩
The Astrophysical journal letters
The Astrophysical journal letters, Bristol : IOP Publishing, 2019, 887 (1), pp.L24. ⟨10.3847/2041-8213/ab50c5⟩
Neutron stars are not only of astrophysical interest, but are also of great interest to nuclear physicists, because their attributes can be used to determine the properties of the dense matter in their cores. One of the most informative approaches fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7477d0eab68be31fbd26920a14bdf24d
https://hal.archives-ouvertes.fr/hal-02440906
https://hal.archives-ouvertes.fr/hal-02440906
Autor:
Edward M. Cackett, Frederick K. Lamb, Jon M. Miller, Tolga Guver, Zaven Arzoumanian, Laurens Keek, Andrew C. Fabian, Gaurava K. Jaisawal, Jérôme Chenevez, Gregory Y. Prigozhin, Deepto Chakrabarty, Y. Soong, Simin Mahmoodifar, C. B. Markwardt, Michael T. Wolff, Renee M. Ludlam, Peter Bult, Tod E. Strohmayer, Jeroen Homan, Keith C. Gendreau, Sebastien Guillot
Publikováno v:
Astrophys.J.Lett.
Astrophys.J.Lett., 2018, 855 (1), pp.L4. ⟨10.3847/2041-8213/aab104⟩
Keek, L, Arzoumanian, Z, Bult, P, Cackett, E M, Chakrabarty, D, Chenevez, J, Fabian, A C, Gendreau, K C, Guillot, S, Güver, T, Homan, J, Jaisawal, G K, Lamb, F K, Ludlam, R M, Mahmoodifar, S, Markwardt, C B, Miller, J M, Prigozhin, G, Soong, Y, Strohmayer, T E & Wolff, M T 2018, ' NICER Observes the Effects of an X-Ray Burst on the Accretion Environment in Aql X-1 ', The Astrophysical Journal Letters, vol. 855, no. 1, L4 . https://doi.org/10.3847/2041-8213/aab104
Astrophys.J.Lett., 2018, 855 (1), pp.L4. ⟨10.3847/2041-8213/aab104⟩
Keek, L, Arzoumanian, Z, Bult, P, Cackett, E M, Chakrabarty, D, Chenevez, J, Fabian, A C, Gendreau, K C, Guillot, S, Güver, T, Homan, J, Jaisawal, G K, Lamb, F K, Ludlam, R M, Mahmoodifar, S, Markwardt, C B, Miller, J M, Prigozhin, G, Soong, Y, Strohmayer, T E & Wolff, M T 2018, ' NICER Observes the Effects of an X-Ray Burst on the Accretion Environment in Aql X-1 ', The Astrophysical Journal Letters, vol. 855, no. 1, L4 . https://doi.org/10.3847/2041-8213/aab104
Accretion disks around neutron stars regularly undergo sudden strong irradiation by Type I X-ray bursts powered by unstable thermonuclear burning on the stellar surface. We investigate the impact on the disk during one of the first X-ray burst observ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::904fc9014240e46650e2cdba44f19db9
http://arxiv.org/abs/1808.06441
http://arxiv.org/abs/1808.06441
Autor:
Zaven Arzoumanian, Peter Bult, Laurens Keek, Jon M. Miller, Feryal Özel, Tolga Guver, Diego Altamirano, Deepto Chakrabarty, Simin Mahmoodifar, Keith C. Gendreau, Gaurava K. Jaisawal, Jérôme Chenevez, Sebastien Guillot, Tod E. Strohmayer, Jeroen Homan
Publikováno v:
Astrophys.J.
Astrophys.J., 2018, 865 (1), pp.63. ⟨10.3847/1538-4357/aada14⟩
Strohmayer, T E, Gendreau, K C, Altamirano, D, Arzoumanian, Z, Bult, P M, Chakrabarty, D, Chenevez, J, Guillot, S, Guver, T, Homan, J, Jaisawal, G K, Keek, L, Mahmoodifar, S, Miller, J M & Ozel, F 2018, ' NICER Discovers mHz Oscillations in the “Clocked” Burster GS 1826−238 ', Astrophysical Journal, vol. 865, no. 1, 63 . https://doi.org/10.3847/1538-4357/aada14
Astrophys.J., 2018, 865 (1), pp.63. ⟨10.3847/1538-4357/aada14⟩
Strohmayer, T E, Gendreau, K C, Altamirano, D, Arzoumanian, Z, Bult, P M, Chakrabarty, D, Chenevez, J, Guillot, S, Guver, T, Homan, J, Jaisawal, G K, Keek, L, Mahmoodifar, S, Miller, J M & Ozel, F 2018, ' NICER Discovers mHz Oscillations in the “Clocked” Burster GS 1826−238 ', Astrophysical Journal, vol. 865, no. 1, 63 . https://doi.org/10.3847/1538-4357/aada14
We report the discovery with the Neutron Star Interior Composition Explorer (NICER) of mHz X-ray brightness oscillations from the "clocked burster." NICER observed the source in the periods 2017 June 20 - 29, July 11 - 13, and September 9 - 15, for a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8fb4ebe5f7f41e026746858ea205e094
http://arxiv.org/abs/1808.04294
http://arxiv.org/abs/1808.04294
Autor:
Keith C. Gendreau, Scott M. Ransom, Sebastien Guillot, Zaven Arzoumanian, Gaurava K. Jaisawal, Craig B. Markwardt, Matthew Kerr, Simin Mahmoodifar, Deepto Chakrabarty, Wynn C. G. Ho, Paul S. Ray, Tod E. Strohmayer, Michael T. Wolff, Jeroen Homan, Slavko Bogdanov, Laurens Keek, Ron Remillard, Teruaki Enoto, Peter Bult, Alice K. Harding
Publikováno v:
Strohmayer, T E, Arzoumanian, Z, Bogdanov, S, Bult, P M, Chakrabarty, D, Enoto, T, Gendreau, K C, Guillot, S, Harding, A K, Ho, W C G, Homan, J, Jaisawal, G K, Keek, L, Kerr, M, Mahmoodifar, S, Markwardt, C B, Ransom, S M, Ray, P S, Remillard, R & Wolff, M T 2018, ' NICER Discovers the Ultracompact Orbit of the Accreting Millisecond Pulsar IGR J17062–6143 ', The Astrophysical Journal Letters, vol. 858, no. 2, L13 . https://doi.org/10.3847/2041-8213/aabf44
Astrophys.J.Lett.
Astrophys.J.Lett., 2018, 858 (2), pp.L13. ⟨10.3847/2041-8213/aabf44⟩
The Astrophysical journal letters
The Astrophysical journal letters, Bristol : IOP Publishing, 2018, 858 (2), pp.L13. ⟨10.3847/2041-8213/aabf44⟩
Astrophys.J.Lett.
Astrophys.J.Lett., 2018, 858 (2), pp.L13. ⟨10.3847/2041-8213/aabf44⟩
The Astrophysical journal letters
The Astrophysical journal letters, Bristol : IOP Publishing, 2018, 858 (2), pp.L13. ⟨10.3847/2041-8213/aabf44⟩
We present results of recent Neutron Star Interior Composition Explorer observations of the accreting millisecond X-ray pulsar IGR J17062-6143 that show that it resides in a circular, ultracompact binary with a 38 minute orbital period. NICER observe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::27cac071e938ebfefdd825c07d78d0d2
Autor:
Frederick K. Lamb, Tod E. Strohmayer, Jeroen Homan, Tolga Guver, Laurens Keek, Beverly LaMarr, Deepto Chakrabarty, Keith C. Gendreau, Zaven Arzoumanian, Sebastien Guillot, C. B. Markwardt, Takashi Okajima, J. J. M. in 't Zand, Simin Mahmoodifar, Gaurava K. Jaisawal, Jérôme Chenevez
Publikováno v:
Astrophys.J.Lett.
Astrophys.J.Lett., 2018, 856 (2), pp.L37. ⟨10.3847/2041-8213/aab904⟩
The Astrophysical journal letters
The Astrophysical journal letters, Bristol : IOP Publishing, 2018, 856 (2), pp.L37. ⟨10.3847/2041-8213/aab904⟩
Keek, L, Arzoumanian, Z, Chakrabarty, D, Chenevez, J, Gendreau, K C, Guillot, S, Güver, T, Homan, J, Jaisawal, G K, LaMarr, B, Lamb, F K, Mahmoodifar, S, Markwardt, C B, Okajima, T, Strohmayer, T E & in ’t Zand, J J M 2018, ' NICER Detection of Strong Photospheric Expansion during a Thermonuclear X-Ray Burst from 4U 1820–30 ', The Astrophysical Journal Letters, vol. 856, no. 2, L37 . https://doi.org/10.3847/2041-8213/aab904
Astrophys.J.Lett., 2018, 856 (2), pp.L37. ⟨10.3847/2041-8213/aab904⟩
The Astrophysical journal letters
The Astrophysical journal letters, Bristol : IOP Publishing, 2018, 856 (2), pp.L37. ⟨10.3847/2041-8213/aab904⟩
Keek, L, Arzoumanian, Z, Chakrabarty, D, Chenevez, J, Gendreau, K C, Guillot, S, Güver, T, Homan, J, Jaisawal, G K, LaMarr, B, Lamb, F K, Mahmoodifar, S, Markwardt, C B, Okajima, T, Strohmayer, T E & in ’t Zand, J J M 2018, ' NICER Detection of Strong Photospheric Expansion during a Thermonuclear X-Ray Burst from 4U 1820–30 ', The Astrophysical Journal Letters, vol. 856, no. 2, L37 . https://doi.org/10.3847/2041-8213/aab904
The Neutron Star Interior Composition Explorer (NICER) on the International Space Station (ISS) observed strong photospheric expansion of the neutron star in 4U 1820-30 during a Type I X-ray burst. A thermonuclear helium flash in the star's envelope
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a799b38d4b66e7fa3c686990db00e812
https://hal.archives-ouvertes.fr/hal-01871585
https://hal.archives-ouvertes.fr/hal-01871585