Simulating AXAF grating spectra of accreting white dwarfs

被引：5

作者：

Tennant, AF ^{[1
]}

Wu, KW

O'Dell, SL

Weisskopf, MC

机构：

[1] NASA, George C Marshall Space Flight Ctr, Space Sci Lab ES84, Huntsville, AL 35812 USA

[2] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia

[3] NASA, George C Marshall Space Flight Ctr, Space Sci Lab ES01, Huntsville, AL 35812 USA

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA | 1998年 / 15卷 / 03期

关键词：

accretion; stars : binaries : close; stars : white dwarfs; data analysis;

D O I：

10.1071/AS98339

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present simulated AXAF spectra of accreting white dwarfs, using parameters appropriate for magnetic cataclysmic variables. The very high spectral resolution that can be obtained with the High-Energy Transmission Grating of AXAF can resolve the keV X-ray emission lines that characterise the temperature, density and velocity profiles of the shock-heated emission regions of these systems. These simulations demonstrate that actual spectra will allow us to place constraints on the white-dwarf mass and the accretion rate of the systems. The high-resolution spectra also allow the measurement of the velocity of the accretion flow in regions close to the white-dwarf surface.

引用

页码：339 / 347

页数：9

共 23 条

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