The very faint X-ray binary IGR J17062-6143: a truncated disc, no pulsations, and a possible outflow

Eijnden, J. van den; Degenaar, N.; Pinto, C.; Patruno, A.; Messenger, C.; Santisteban, J. V. Hernández; Wijnands, Rudy; Miller, J. M.; Altamirano, D.; Paerels, F.; Chakrabarty, Deepto; Fabian, A. C.

doi:10.1093/mnras/stx3224

Cited by 38 publications

(44 citation statements)

References 111 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our analysis of observations of J1706 with NICER obtained in 2017 August, October, and November confirms the discovery by SK17 that it is a 163.656 Hz AMXP, and allowed us to derive the orbital parameters of the system for the first time. The 37.97 minutes orbital period of J1706 is the shortest currently known for an AMXP, and our measurement confirms several previous indirect indications that the system is an ultracompact binary (Hernandez Santisteban et al 2018;van den Eijnden et al 2018). We measure a mass function, f m i sin…”

Section: Discussion and Summarysupporting

confidence: 83%

“…The accreting neutron star binary IGR J17062−6143 (hereafter J1706) is one of the most recently identified accreting millisecond X-ray pulsars (AMXPs). First observed in outburst in 2006 (Churazov et al 2007;Remillard & Levine 2008;Ricci et al 2008), it has since then been persistently accreting at luminosities in the range (5.8-7.5)×10 35 erg s −1 (2-20 keV), assuming a distance of 7.3 kpc (Degenaar et al 2013;Keek et al 2017;Strohmayer & Keek 2017;van den Eijnden et al 2018). The object's neutron star nature was first revealed by the detection of thermonuclear X-ray bursts.…”

Section: Introductionmentioning

confidence: 99%

“…For example, Degenaar et al (2017) reported the presence of Fe Kα reflection features in NuSTAR data, the modeling of which suggested an inner disk that may be truncated out to ≈100R g , where R GM c g 2 = . Most recently, van den Eijnden et al (2018) present results of simultaneous NuSTAR and XMM-Newton observations. They report the presence of reflection features as well, and suggest a similarly truncated disk as in Degenaar et al (2017).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

NICER Discovers the Ultracompact Orbit of the Accreting Millisecond Pulsar IGR J17062–6143

Strohmayer

Arzoumanian

Bogdanov

et al. 2018

ApJL

View full text Add to dashboard Cite

We present results of recent Neutron Star Interior Composition Explorer (NICER) observations of the accreting millisecond X-ray pulsar (AMXP) IGR J17062−6143 that show that it resides in a circular, ultracompact binary with a 38-minute orbital period. NICER observed the source for ≈26 ks over a 5.3-day span in 2017 August, and again for 14 and 11 ks in 2017 October and November, respectively. A power spectral analysis of the August exposure confirms the previous detection of pulsations at 163.656 Hz in Rossi X-ray Timing Explorer (RXTE) data, and reveals phase modulation due to orbital motion of the neutron star. A coherent search for the orbital solution using the Z 2 method finds a best-fitting circular orbit with a period of 2278.21 s (37.97 minutes), a projected semimajor axis of 0.00390 lt-s, and a barycentric pulsar frequency of 163.6561105 Hz. This is currently the shortest known orbital period for an AMXP. The mass function is 9.12×10 −8 M e , presently the smallest known for a stellar binary. The minimum donor mass ranges from ≈0.005 to 0.007 M e for a neutron star mass from 1.2 to 2 M e. Assuming mass transfer is driven by gravitational radiation, we find donor mass and binary inclination bounds of 0.0175-0.0155 M e and 19°<i<27°. 5, where the lower and upper bounds correspond to 1.4 and 2 M e neutron stars, respectively. Folding the data accounting for the orbital modulation reveals a sinusoidal profile with fractional amplitude 2.04±0.11% (0.3-3.2 keV).

show abstract

Section: Discussion and Summarysupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

NICER Discovers the Ultracompact Orbit of the Accreting Millisecond Pulsar IGR J17062–6143

Strohmayer

Arzoumanian

Bogdanov

et al. 2018

ApJL

View full text Add to dashboard Cite

show abstract

“…One may consider an ultracompact X-ray binary, which would not have H lines. The absolute magnitude of ultracompact Xray binaries in outburst can be estimated by observations of ultracompact X-ray binaries in globular clusters to be around M B ∼ 5 ± 1 (Deutsch et al 2000;Haurberg et al 2010;Edmonds et al 2003), consistent with predictions from van Paradijs & McClintock (1994). Transient systems have rarely been detected in quiescence, due to their faintness; D' Avanzo et al (2009) find one ultracompact with M V ∼ 13.…”

Section: Swift J1752339−290952: An Unidentified Vfxtsupporting

confidence: 55%

The Swift Bulge Survey: optical and near-IR follow-up featuring a likely symbiotic X-ray binary and a focused wind CV

Shaw

Heinke

Maccarone

et al. 2020

Monthly Notices of the Royal Astronomical Society

Self Cite

View full text Add to dashboard Cite

The nature of very faint X-ray transients (VFXTs) -transient X-ray sources that peak at luminosities L X 10 36 erg s −1 -is poorly understood. The faint and often shortlived outbursts make characterising VFXTs and their multi-wavelength counterparts difficult. In 2017 April we initiated the Swift Bulge Survey, a shallow X-ray survey of ∼16 square degrees around the Galactic centre with the Neil Gehrels Swift Observatory. The survey has been designed to detect new and known VFXTs, with follow-up programmes arranged to study their multi-wavelength counterparts. Here we detail the optical and near-infrared follow-up of four sources detected in the first year of the Swift Bulge Survey. The known neutron star binary IGR J17445-2747 has a K4III donor, indicating a potential symbiotic X-ray binary nature and the first such source to show X-ray bursts. We also find one nearby M-dwarf (1SXPS J174215.0-291453) and one system without a clear near-IR counterpart (Swift J175233.9-290952). Finally, 3XMM J174417.2-293944 has a subgiant donor, an 8.7 d orbital period, and a likely white dwarf accretor; we argue that this is the first detection of a white dwarf accreting from a gravitationally focused wind. A key finding of our follow-up campaign is that binaries containing (sub)giant stars may make a substantial contribution to the VFXT population.

show abstract

“…Also, a white dwarf donor was proposed for IGR J17062-6143, the last confirmed UCXB to date (Strohmayer et al 2018). It showed a residual structure at ∼1 keV, that was suggested to arise from an over-abundance of O -likely related with circumbinary material -while Ne edge abundances were consistent with the interstellar medium (van den Eijnden et al 2018;Degenaar et al 2017). The presence of strong emission lines of highly ionised species of Ne and O in the high resolution X-ray spectroscopy of 4U 1626-67 also suggested a C-O rich white dwarf donor (Schulz et al 2001;Krauss et al 2007).…”

Section: Discussionmentioning

confidence: 98%

On the ultra-compact nature of the neutron star system 1RXS J170854.4−321857: insights from X-ray spectroscopy

Padilla

López-Navas

2019

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

The relatively small family of ultra-compact X-ray binary systems is of great interest for many areas of astrophysics. We report on a detailed X-ray spectral study of the persistent neutron star low mass X-ray binary 1RXS J170854.4-321857. We analysed two XMM-Newton observations obtained in late 2004 and early 2005 when, in agreement with previous studies, the system displayed an X-ray luminosity (0.5-10 keV) of ∼ 1 × 10 36 erg s −1 . The spectrum can be described by a Comptonized emission component with Γ ∼1.9 and a distribution of seed photons with a temperature of ∼ 0.23 keV. A prominent residual feature is present at soft energies, which is reproduced by the absorption model if over-abundances of Ne and Fe are allowed. We discuss how similar observables, that might be attributed to the peculiar (non-solar) composition of the plasma donated by the companion star, are a common feature in confirmed and candidate ultra-compact systems. Although this interpretation is still under debate, we conclude that the detection of these features along with the persistent nature of the source at such low luminosity and the intermediate-long burst that it displayed in the past confirms 1RXS J170854.4-321857as a solid ultra-compact X-ray binary candidate.

show abstract

The very faint X-ray binary IGR J17062-6143: a truncated disc, no pulsations, and a possible outflow

Cited by 38 publications

References 111 publications

NICER Discovers the Ultracompact Orbit of the Accreting Millisecond Pulsar IGR J17062–6143

NICER Discovers the Ultracompact Orbit of the Accreting Millisecond Pulsar IGR J17062–6143

The Swift Bulge Survey: optical and near-IR follow-up featuring a likely symbiotic X-ray binary and a focused wind CV

On the ultra-compact nature of the neutron star system 1RXS J170854.4−321857: insights from X-ray spectroscopy

Contact Info

Product

Resources

About