Physical properties of the supernova remnant expanding in a dumpy circumstellar medium are studied. Taking into account the effect of cloud evaporation in the clumpy medium, it is found that the evolution and internal...Physical properties of the supernova remnant expanding in a dumpy circumstellar medium are studied. Taking into account the effect of cloud evaporation in the clumpy medium, it is found that the evolution and internal structure of supernova remnant in a clumpy medium of a power-law density distribution in the radius are generally serf-similar as long as the minus power-law index is in the range of about 0-3. In the case where the index equals -2, namely, the medium is composed of the inhomogeneous free stellar wind, based on the detailed hydrodynamic solution, the formulae, figures, and tables for describing the observable properties, such as the relative distribution of the remnant's surface brightness, X-ray luminosity, the mass of X-ray-emitting gas, emission-measure-weighted mean temperature, infrared luminosity, and Ha luminosity, are provided. It is indicated that the evaporated matter may pile up near the center and the X-ray emission there is brighter than that near the limb when some parameters are appropriate.展开更多
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 wh...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 led by the Institute of High Energy Physics of the Chinese Academy of Science, the eXTP mission is expected to be launched in the mid 2020s.展开更多
文摘Physical properties of the supernova remnant expanding in a dumpy circumstellar medium are studied. Taking into account the effect of cloud evaporation in the clumpy medium, it is found that the evolution and internal structure of supernova remnant in a clumpy medium of a power-law density distribution in the radius are generally serf-similar as long as the minus power-law index is in the range of about 0-3. In the case where the index equals -2, namely, the medium is composed of the inhomogeneous free stellar wind, based on the detailed hydrodynamic solution, the formulae, figures, and tables for describing the observable properties, such as the relative distribution of the remnant's surface brightness, X-ray luminosity, the mass of X-ray-emitting gas, emission-measure-weighted mean temperature, infrared luminosity, and Ha luminosity, are provided. It is indicated that the evaporated matter may pile up near the center and the X-ray emission there is brighter than that near the limb when some parameters are appropriate.
基金supported by the Royal Society,ERC Starting(Grant No.639217)he European Union Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie Global Fellowship(Grant No.703916)+10 种基金the National Natural Science Foundation of China(Grant Nos.11233001,11773014,11633007,11403074,11333005,11503008,and 11590781)the National Basic Research Program of China(Grant No.2015CB857100)NASA(Grant No.NNX13AD28A)an ARC Future Fellowship(Grant No.FT120100363)the National Science Foundation(Grant No.PHY-1430152)the Spanish MINECO(Grant No.AYA2016-76012-C3-1-P)the ICCUB(Unidad de Excelencia’Maria de Maeztu’)(Grant No.MDM-2014-0369)EU’s Horizon Programme through a Marie Sklodowska-Curie Fellowship(Grant No.702638)the Polish National Science Center(Grant Nos.2015/17/B/ST9/03422,2015/18/M/ST9/00541,2013/10/M/ST9/00729,and 2015/18/A/ST9/00746)the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDA15020100)the NWO Veni Fellowship(Grant No.639.041.647)
文摘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 led by the Institute of High Energy Physics of the Chinese Academy of Science, the eXTP mission is expected to be launched in the mid 2020s.
