Non-Detection of Gravitationally Redshifted Absorption Lines in the X-ray Burst Spectra of GS 1826-24

Abstract

During a 200 ks observation with the XMM-Newton Reflection Grating Spectrometer, we detected 16 type-I X-ray bursts from GS 1826-24. We combined the burst spectra in an attempt to measure the gravitational redshifts from the surface of the neutron star. We divided the composite GS 1826-24 burst spectrum into three groups based on the blackbody temperature during the bursts. The spectra do not show any obvious discrete absorption lines. We compare our observations with those of EXO 0748-676.

arXiv comment4 pages, 4 figures; accepted for publication in ApJL

References in corpus (16)

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Cited by in corpus (13)

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• The Multi-INstrument Burst ARchive (MINBAR)
• Nucleosynthesis in Type I X-ray Bursts
• Accretion disks and coronae in the X-ray flashlight
• A bright thermonuclear X-ray burst simultaneously observed with Chandra and RXTE
• Nuclear astrophysics: the unfinished quest for the origin of the elements
• Measurement of neutron star parameters: a review of methods for low-mass X-ray binaries
• Discovery of a 552 Hz burst oscillation in the low-mass X-ray binary EXO 0748-676
• Deviations from the Flux-Recurrence Time Relationship in GS 1826-238: Potential Transient Spectral Changes
• Long tails on thermonuclear X-ray bursts from neutron stars: a signature of inward heating?
• Burst-induced coronal cooling in GS 1826-24 The clock wagging its tail
• A solution of the puzzling symbiotic X-ray system 4U 1700+24
• Nucleosynthesis in Type Ia Supernovae, Classical Novae, and Type I X-Ray Bursts. A Primer on Stellar Explosions