Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 765, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2041-8205/765/1/L1
Keywords
stars: neutron; X-rays: binaries; X-rays: individual (SAX J1748-2021)
Categories
Funding
- NASA ADAP grant [NNX10AE89G]
- Radcliffe Institute for Advanced Study at Harvard University
- NASA [NNX10AE89G, 134544] Funding Source: Federal RePORTER
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1108753] Funding Source: National Science Foundation
Ask authors/readers for more resources
We use time-resolved spectroscopy of thermonuclear X-ray bursts observed from SAX J1748.9-2021 to infer the mass and the radius of the neutron star in the binary. Four X-ray bursts observed from the source with the Rossi X-ray Timing Explorer enable us to measure the angular size and the Eddington limit on the neutron star surface. Combined with a distance measurement to the globular cluster NGC 6440, in which SAX J1748.9-2021 resides, we obtain two solutions for the neutron star radius and mass, R = 8.18 +/- 1.62 km and M = 1.78 +/- 0.3 M-circle dot or R = 10.93 +/- 2.09 km and M = 1.33 +/- 0.33 M-circle dot.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
