2009A&A...497..469I

Query : 2009A&A...497..469I

2009A&A...497..469I - Astronomy and Astrophysics, volume 497469-480 (2009/4-2)

Long tails on thermonuclear X-ray bursts from neutron stars: a signature of inward heating?

IN'T ZAND J.J.M., KEEK L., CUMMING A., HEGER A., HOMAN J. and MENDEZ M.

Abstract (from CDS):

We report the discovery of one-hour long tails on the few-minutes long X-ray bursts from the ``clocked burster'' GS 1826-24. We propose that the tails are due to enduring thermal radiation from the neutron star envelope. The enduring emission can be explained by cooling of deeper neutron star layers that were heated up through inward conduction of heat produced in the thermonuclear shell flash responsible for the burst. Similar, though somewhat shorter, tails are seen in bursts from EXO 0748-676 and 4U 1728-34. Only a small amount of cooling is detected in all these tails. This is either due to compton upscattering of the tail photons or, more likely, to a neutron star that is already fairly hot due to other stable nuclear processes.

Abstract Copyright: ∼

Journal keyword(s): X-rays: binaries - X-rays: bursts - accretion, accretion disks - stars: neutron - X-rays: individual: GS 1826-24 - X-rays: individual: EXO 0748-676 - X-rays: individual: 4U 1728-34 = GX354-0

CDS comments: Table 2 OSO-8 long burst not in Simbad. Paragraph. 5.1 XTE J1747-214 is a misprint for XTE J1747-274.

Simbad objects: 13

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Number of rows : 13
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* UY Vol LXB 07 48 33.71 -67 45 07.7 16.10 17.00 16.9 16.7 17.05 ~ 660 0
2 4U 1246-58 LXB 12 49 39.4 -59 05 14   19.24 18.99     ~ 103 0
3 V* V822 Cen LXB 14 58 21.9347842080 -31 40 07.515432768 11.95 12.85 12.8     K3-K7V 555 0
4 4U 1711-34 LXB 17 14 19.78 -34 02 47.3           ~ 48 0
5 4U 1722-30 LXB 17 27 33.25 -30 48 07.4     12.50     ~ 278 1
6 NAME Slow Burster LXB 17 31 58.0 -33 49 58     15.50     ~ 865 1
7 [KRL2007b] 277 LXB 17 47 18.06 -27 20 38.9           ~ 88 0
8 X Sgr X-1 LXB 17 47 56.3 -26 33 47           ~ 402 0
9 V* NP Ser LXB 18 16 01.7 -14 02 09   18.8       K 683 2
10 X Sgr X-4 LXB 18 23 40.57 -30 21 40.6   19.06 18.81     ~ 1056 1
11 M 28 GlC 18 24 32.89 -24 52 11.4           ~ 821 0
12 V* V4634 Sgr LXB 18 29 28.8 -23 47 48 18.90 19.40 19     ~ 399 0
13 X Aql X-1 LXB 19 11 16.0571313336 +00 35 05.868232692           ~ 1186 1

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