دورية أكاديمية
SDSS J102347.6+003841: a millisecond radio pulsar binary that had a hot disk during 2000-2001
| العنوان: | SDSS J102347.6+003841: a millisecond radio pulsar binary that had a hot disk during 2000-2001 |
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| المؤلفون: | Wang, Zhongxiang, Archibald, Anne M., Thorstensen, John R., Kaspi, Victoria M., Lorimer, Duncan R., Stairs, Ingrid, Ransom, Scott M. |
| المساهمون: | Swinburne University of Technology |
| المصدر: | Astrophysical Journal, Vol. 703, no. 2 (Oct 2009), pp. 2017-2023 |
| بيانات النشر: | Institute of Physics Publishing |
| سنة النشر: | 2009 |
| المجموعة: | Swinburne University of Technology: Swinburne Research Bank |
| الوصف: | The Sloan Digital Sky Survey (SDSS) source J102347.6+003841 was recently revealed to be a binary 1.69 ms radio pulsar with a 4.75 hr orbital period and a ~0.2 M companion. Here, we analyze the SDSS spectrum of the source in detail. The spectrum was taken on 2001 February 1, when the source was in a bright state and showed broad, double-peaked hydrogen and helium lines-dramatically different from the G-type absorption spectrum seen from 2002 May onward. The lines are consistent with emission from a disk around the compact primary. We derive properties of the disk by fitting the SDSS continuum with a simple disk model, and find a temperature range of 2000â-34,000 K from the outer to inner edge of the disk. The disk inner and outer radii were approximately 109 and 5.7×1010 cm, respectively. These results further emphasize the unique feature of the source: it is a system likely at the end of its transition from an X-ray binary to a recycled radio pulsar. The disk mass is estimated to have been ~ 1023 g, most of which would have been lost due to pulsar wind ablation (or due to the propeller effect if the disk had extended inside the light cylinder of the pulsar) before the final disk disruption event. The system could undergo repeated episodes of disk formation. Close monitoring of the source is needed to catch the system in its bright state again, so that this unusual example of a pulsarâ-disk interaction can be studied in much finer detail. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| العلاقة: | http://hdl.handle.net/1959.3/69541Test; https://doi.org/10.1088/0004-637x/703/2/2017Test |
| DOI: | 10.1088/0004-637x/703/2/2017 |
| الإتاحة: | https://doi.org/10.1088/0004-637x/703/2/2017Test http://hdl.handle.net/1959.3/69541Test |
| حقوق: | Copyright © 2009 The American Astronomical Society. |
| رقم الانضمام: | edsbas.90A2CF02 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1088/0004-637x/703/2/2017 |
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