Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Salmi, Tuomo"'
Autor:
Salmi, Tuomo, Choudhury, Devarshi, Kini, Yves, Riley, Thomas E., Vinciguerra, Serena, Watts, Anna L., Wolff, Michael T., Arzoumanian, Zaven, Bogdanov, Slavko, Chakrabarty, Deepto, Gendreau, Keith, Guillot, Sebastien, Ho, Wynn C. G., Huppenkothen, Daniela, Ludlam, Renee M., Morsink, Sharon M., Ray, Paul S.
We report an updated analysis of the radius, mass, and heated surface regions of the massive pulsar PSR J0740+6620 using NICER data from 2018 September 21 to 2022 April 21, a substantial increase in data set size compared to previous analyses. Using
Externí odkaz:
http://arxiv.org/abs/2406.14466
Autor:
Choudhury, Devarshi, Watts, Anna L., Dittmann, Alexander J., Miller, M. Coleman, Morsink, Sharon M., Salmi, Tuomo, Vinciguerra, Serena, Bogdanov, Slavko, Guillot, Sebastien, Wolff, Michael T., Arzoumanian, Zaven
Pulse Profile Modeling (PPM), the technique used to infer mass, radius and geometric parameters for rotation-powered millisecond pulsars using data from the Neutron Star Interior Composition Explorer (NICER), relies on relativistic ray-tracing of the
Externí odkaz:
http://arxiv.org/abs/2406.07285
Autor:
Kini, Yves, Salmi, Tuomo, Vinciguerra, Serena, Watts, Anna L., Bilous, Anna, Galloway, Duncan K., van der Wateren, Emma, Khalsa, Guru Partap, Bogdanov, Slavko, Buchner, Johannes, Suleimanov, Valery
Pulse profile modelling (PPM) is a comprehensive relativistic ray-tracing technique employed to determine the properties of neutron stars. In this study, we apply this technique to the Type I X-ray burster and accretion-powered millisecond pulsar XTE
Externí odkaz:
http://arxiv.org/abs/2405.10717
Autor:
Bobrikova, Anna, Forsblom, Sofia V., Di Marco, Alessandro, La Monaca, Fabio, Poutanen, Juri, Ng, Mason, Ravi, Swati, Loktev, Vladislav, Kajava, Jari J. E., Ursini, Francesco, Veledina, Alexandra, Rogantini, Daniele, Salmi, Tuomo, Bianchi, Stefano, Capitanio, Fiamma, Done, Chris, Fabiani, Sergio, Gnarini, Andrea, Heyl, Jeremy, Kaaret, Philip, Matt, Giorgio, Muleri, Fabio, Nitindala, Anagha P., Rankin, John, Weisskopf, Martin C., Agudo, Ivan, Antonelli, Lucio A., Bachetti, Matteo, Baldini, Luca, Baumgartner, Wayne H., Bellazzini, Ronaldo, Bongiorno, Stephen D., Bonino, Raffaella, Brez, Alessandro, Bucciantini, Niccolo, Castellano, Simone, Cavazzuti, Elisabetta, Chen, Chien-Ting, Ciprini, Stefano, Costa, Enrico, De Rosa, Alessandra, Del Monte, Ettore, Di Gesu, Laura, Di Lalla, Niccolo, Donnarumma, Immacolata, Doroshenko, Victor, Dovciak, Michal, Ehlert, Steven R., Enoto, Teruaki, Evangelista, Yuri, Ferrazzoli, Riccardo, Garcia, Javier A., Gunji, Shuichi, Hayashida, Kiyoshi, Iwakiri, Wataru, Jorstad, Svetlana G., Karas, Vladimir, Kislat, Fabian, Kitaguchi, Takao, Kolodziejczak, Jeffery J., Krawczynski, Henric, Latronico, Luca, Liodakis, Ioannis, Maldera, Simone, Manfreda, Alberto, Marin, Frederic, Marinucci, Andrea, Marscher, Alan P., Marshall, Herman L., Massaro, Francesco, Mitsuishi, Ikuyuki, Mizuno, Tsunefumi, Negro, Michela, Ng, Chi-Yung, O'Dell, Stephen L., Omodei, Nicola, Oppedisano, Chiara, Papitto, Alessandro, Pavlov, George G., Peirson, Abel L., Perri, Matteo, Pesce-Rollins, Melissa, Petrucci, Pierre-Olivier, Pilia, Maura, Possenti, Andrea, Puccetti, Simonetta, Ramsey, Brian D., Ratheesh, Ajay J., Roberts, Oliver, Romani, Roger W., Sgro, Carmelo, Slane, Patrick, Soffitta, Paolo, Spandre, Gloria, Swartz, Douglas A., Tamagawa, Toru, Tavecchio, Fabrizio, Taverna, Roberto, Tawara, Yuzuru, Tennant, Allyn F., Thomas, Nicholas E., Tombesi, Francesco, Trois, Alessio, Tsygankov, Sergey S., Turolla, Roberto, Vink, Jacco, Wu, Kinwah, Xie, Fei, Zane, Silvia
Weakly magnetized neutron stars in X-ray binaries show complex phenomenology with several spectral components that can be associated with the accretion disk, boundary and/or spreading layer, a corona, and a wind. Spectroscopic information alone is, h
Externí odkaz:
http://arxiv.org/abs/2401.13058
Effects of scattering in the accretion funnel on the pulse profiles of accreting millisecond pulsars
The hotspot emission of accreting millisecond pulsars (AMPs) undergoes scattering in the accretion flow between the disk inner radius and the neutron star surface. The scattering optical depth of the flow depends on the photon emission angle, which i
Externí odkaz:
http://arxiv.org/abs/2312.08142
Publikováno v:
A&A 678, A99 (2023)
Pulse profiles of accreting millisecond pulsars can be used to determine neutron star (NS) parameters, such as their masses and radii, and therefore provide constraints on the equation of state of cold dense matter. Information obtained by the Imagin
Externí odkaz:
http://arxiv.org/abs/2309.02329
Autor:
Kini, Yves, Salmi, Tuomo, Vinciguerra, Serena, Watts, Anna L., Choudhury, Devarshi, Bogdanov, Slavko, Buchner, Johannes, Meisel, Zach, Suleimanov, Valery
Pulse profile modelling is a relativistic ray-tracing technique that can be used to infer masses, radii and geometric parameters of neutron stars. In a previous study, we looked at the performance of this technique when applied to thermonuclear burst
Externí odkaz:
http://arxiv.org/abs/2308.12895
Autor:
Vinciguerra, Serena, Salmi, Tuomo, Watts, Anna L., Choudhury, Devarshi, Riley, Thomas E., Ray, Paul S., Bogdanov, Slavko, Kini, Yves, Guillot, Sebastien, Chakrabarty, Deepto, Ho, Wynn C. G., Huppenkothen, Daniela, Morsink, Sharon M., Wadiasingh, Zorawar
Publikováno v:
ApJ, 961, 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 characterising dense matter. Two independent analyses found a mass of $
Externí odkaz:
http://arxiv.org/abs/2308.09469
Autor:
Salmi, Tuomo, Vinciguerra, Serena, Choudhury, Devarshi, Watts, Anna L., Ho, Wynn C. G., Guillot, Sebastien, Kini, Yves, Dorsman, Bas, Morsink, Sharon M., Bogdanov, Slavko
Publikováno v:
ApJ 956 138 (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:
http://arxiv.org/abs/2308.09319
Autor:
Vinciguerra, Serena, Salmi, Tuomo, Watts, Anna L., Choudhury, Devarshi, Kini, Yves, Riley, Thomas E.
Publikováno v:
ApJ, 959, 55 (2023)
In the last few years, the NICER collaboration has provided mass and radius inferences, via pulse profile modeling, for two pulsars: PSR J0030+0451 and PSR J0740+6620. Given the importance of these results for constraining the equation of state of de
Externí odkaz:
http://arxiv.org/abs/2308.08409