Dense matter with eXTP

Watts, Anna L.
Yu, WenFei
Poutanen, Juri
Zhang, Shu
Bhattacharyya, Sudip
Bogdanov, Slavko
Ji, Long
Patruno, Alessandro
Riley, Thomas E.
Bakala, Pavel
Baykal, Altan
Bernardini, Federico
Bombaci, Ignazio
Brown, Edward
Cavecchi, Yuri
Chakrabarty, Deepto
Chenevez, Jerome
Degenaar, Nathalie
Del Santo, Melania
Di Salvo, Tiziana
Doroshenko, Victor
Falanga, Maurizio
Ferdman, Robert D.
Feroci, Marco
Gambino, Angelo F.
Ge, MingYu
Greif, Svenja K.
Guillot, Sebastien
Gungor, Can
Hartmann, Dieter H.
Hebeler, Kai
Heger, Alexander
Homan, Jeroen
Iaria, Rosario
in 't Zand, Jean
Kargaltsev, Oleg
Kurkela, Aleksi
Lai, XiaoYu
Li, Ang
Li, XiangDong
Li, ZhaoSheng
Linares, Manuel
Lu, FangJun
Mahmoodifar, Simin
Mendez, Mariano
Miller, M. Coleman
Morsink, Sharon
Nattila, Joonas
Possenti, Andrea
Prescod-Weinstein, Chanda
Qu, JinLu
Riggio, Alessandro
Salmi, Tuomo
Sanna, Andrea
Santangelo, Andrea
Schatz, Hendrik
Schwenk, Achim
Song, LiMing
Sramkova, Eva
Stappers, Benjamin
Stiele, Holger
Strohmayer, Tod
Tews, Ingo
Tolos, Laura
Torok, Gabriel
Tsang, David
Urbanec, Martin
Vacchi, Andrea
Xu, RenXin
Xu, YuPeng
Zane, Silvia
Zhang, GuoBao
Zhang, ShuangNan
Zhang, WenDa
Zheng, ShiJie
Zhou, Xia
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 laboratory. The tightest statistical constraints on the dense matter equation of state will come from pulse profile modelling of accretion-powered pulsars, burst oscillation sources, and rotation-powered pulsars. Additional constraints will derive from spin measurements, burst spectra, and properties of the accretion flows in the vicinity of the neutron star. Under development by an international Consortium led by the Institute of High Energy Physics of the Chinese Academy of Sciences, the eXTP mission is expected to be launched in the mid 2020s.


Observatory science with eXTP
in't Zand, Jean J. M.; et. al. (2019-02-01)
In this White Paper we present the potential of the enhanced X-ray Timing and Polarimetry (eXTP) mission for studies related to Observatory Science targets. These include flaring stars, supernova remnants, accreting white dwarfs, low and high mass X-ray binaries, radio quiet and radio loud active galactic nuclei, tidal disruption events, and gamma-ray bursts. eXTP will be excellently suited to study one common aspect of these objects: their often transient nature. Developed by an international Consortium le...
Accretion in strong field gravity with eXTP
De Rosa, Alessandra; et. al. (Springer Science and Business Media LLC, 2019-02-01)
In this paper we describe the potential of the enhanced X-ray Timing and Polarimetry (eXTP) mission for studies related to accretion flows in the strong field gravity regime around both stellar-mass and supermassive black-holes. eXTP has the unique capability of using advanced “spectral-timing-polarimetry” techniques to analyze the rapid variations with three orthogonal diagnostics of the flow and its geometry, yielding unprecedented insight into the inner accreting regions, the effects of strong field grav...
Timing and spectral analysis of 2S 1417-624 during its 2018 outburst
Serim, Muhammed Miraç; Ozudogru, O. C.; Donmez, C. K.; Sahiner, S.; Serim, D.; Baykal, Altan; Inam, S. C. (2022-02-01)
We investigate timing and spectral characteristics of the transient X-ray pulsar 2S 1417-624 during its 2018 outburst with NICER follow up observations. We describe the spectra with high-energy cut-off and partial covering fraction absorption (PCFA) model and present flux-dependent spectral changes of the source during the 2018 outburst. Utilizing the correlation-mode switching of the spectral model parameters, we confirm the previously reported sub-critical to critical regime transitions and we argue that ...
Fractional incompressible stars
Bayin, Selcuk S.; Krisch, Jean P. (2015-10-01)
In this paper we investigate the fractional versions of the stellar structure equations for non radiating spherical objects. Using incompressible fluids as a comparison, we develop models for constant density Newtonian objects with fractional mass distributions and/or stress conditions. To better understand the fractional effects, we discuss effective values for the density and equation of state. The fractional objects are smaller and less massive than integer models. The fractional parameters are related t...
X-ray analysis of high mass x-ray binary pulsars
Şahiner, Şeyda; Baykal, Altan; İnam, Sıtkı Çağdaş; Department of Physics (2015)
In this thesis, X-ray properties of three high mass X-ray binary (HMXB) pulsars are analysed, using the data of X-ray satellites such as RXTE, INTEGRAL and Swift. Selected sources belong to different subgroups of the HMXB family. The first system, 4U 1907+09 is a classical wind-fed supergiant system with persistent X-ray emission; although it shows irregular flares and dips. SWIFT J1729.9-3437 and SWIFT J0513.4-6547 are newly discovered transient systems. Although the counterpart of SWIFT J1729.9-3437 could...
Citation Formats
A. L. Watts et al., “Dense matter with eXTP,” SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, pp. 0–0, 2019, Accessed: 00, 2020. [Online]. Available: