Multiwavelength observations of 1RXH J173523.7-354013: revealing an unusual bursting neutron star
N. Degenaar
(1)
,
P. Jonker
(2)
,
M. A. P. Torres
(3)
,
Ramanpreet Kaur
(1)
,
N. Rea
(1)
,
Guy L. Israel
(4)
,
A. Patruno
(1)
,
G. Trap
(5, 6)
,
E. M. Cackett
(7)
,
Paolo d'Avanzo
(8)
,
Gaspare Lo Curto
(8)
,
G. Novara
(9)
,
H. Krimm
(10)
,
S. T. Holland
(10)
,
A. de Luca
(9)
,
P. Esposito
(9)
,
Rudy Wijnands
(1)
1
AI PANNEKOEK -
Astronomical Institute Anton Pannekoek
2 SRON - SRON Netherlands Institute for Space Research
3 Harvard-Smithsonian Center for Astrophysics
4 INAF-OAR - INAF-Osservatorio Astronomico di Roma
5 CEA - Commissariat à l'énergie atomique et aux énergies alternatives
6 APC (UMR_7164) - AstroParticule et Cosmologie
7 Astronomy Department, University of Michigan
8 INAF-OAB - INAF-Osservatorio Astronomico di Brera
9 IASF-Milano - Istituto di Astrofisica Spaziale e Fisica Cosmica
10 USRA - Universities Space Research Association, Columbia
2 SRON - SRON Netherlands Institute for Space Research
3 Harvard-Smithsonian Center for Astrophysics
4 INAF-OAR - INAF-Osservatorio Astronomico di Roma
5 CEA - Commissariat à l'énergie atomique et aux énergies alternatives
6 APC (UMR_7164) - AstroParticule et Cosmologie
7 Astronomy Department, University of Michigan
8 INAF-OAB - INAF-Osservatorio Astronomico di Brera
9 IASF-Milano - Istituto di Astrofisica Spaziale e Fisica Cosmica
10 USRA - Universities Space Research Association, Columbia
Résumé
On 2008 May 14, the Burst Alert Telescope onboard the Swift mission triggered on a type-I X-ray burst from the previously unclassified ROSAT object 1RXH J173523.7-354013, establishing the source as a neutron star X-ray binary. We report on X-ray, optical and near-infrared observations of this system. The X-ray burst had a duration of ~2 h and belongs to the class of rare, intermediately long type-I X-ray bursts. From the bolometric peak flux of ~3.5 × 10-8ergcm-2s-1, we infer a source distance of D