Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
Mon. Not. R. Astron. Soc. 000, 000000 (0000) Printed 15 November 2007 (MN LATEX style file v2.2) The X-ray spectrum of RX J1914.4+2456 revisited
 

Summary: Mon. Not. R. Astron. Soc. 000, 000000 (0000) Printed 15 November 2007 (MN LATEX style file v2.2)
The X-ray spectrum of RX J1914.4+2456 revisited
Gavin Ramsay
Armagh Observatory, College Hill, Armagh, BT61 9DG, Northern Ireland
Accepted 2007 November 15. Received 2007 November 14; in original form 2007 October 9
ABSTRACT
It has been proposed that RX J1914.4+2456 is a stellar binary system with an orbital
period of 9.5 mins. As such it shares many similar properties with RX J0806.3+1527
(5.4 mins). However, while the X-ray spectrum of RX J0806.3+1527 can be modelled
using a simple absorbed blackbody, the X-ray spectrum of RX J1914.4+2456 has
proved difficult to fit using a physically plausible model. In this paper we re-examine
the available X-ray spectra of RX J1914.4+2456 taken using XMM-Newton. We find
that the X-ray spectra can be fitted using a simple blackbody and an absorption
component which has a significant enhancement of neon compared to the solar value.
We propose that the material in the inter-binary system is significantly enhanced with
neon. This makes its intrinsic X-ray spectrum virtually identical to RX J0806.3+1527.
We re-access the X-ray luminosity of RX J1914.4+2456 and the implications of these
results.
Key words: Stars: binary - general; abundances; individual: - RX J1914.4+2456,
RX J0806.3+1527; X-rays: binaries

  

Source: Armagh Observatory

 

Collections: Physics