Two X-ray periodicities from the vicinity of 4U1145–61

White, N. E.; Parkes, Georgina; Sanford, P. W.; Mason, K. O.; Murdin, Paul

doi:10.1038/274664a0

Cited by 26 publications

(19 citation statements)

References 8 publications

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“…These optical identification and spectral classification were later confirmed by Dower et al (1978) and . In the meantime, two close X-ray periodicities with periods of ∼ 292 and ∼ 297 sec were discovered from the vicinity of 4U 1145-619 (White et al, 1978). The situation was clarified with the discovery of another X-ray source 1E 1145.1-614 located only 15' away from 4U 1145-619 and demonstrated pulsations with the period of ∼ 298 s, while pulsations with the period ≃ 290 s were attributed to 4U 1145-619 (Lamb et al, 1980).…”

Section: Discussionmentioning

confidence: 97%

High-mass X-ray binaries in the Milky Way

Walter

Lutovinov

Bozzo

et al. 2015

Astron Astrophys Rev

230

234

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High-mass X-ray binaries are fundamental in the study of stellar evolution, nucleosynthesis, structure and evolution of galaxies and accretion processes. Hard X-rays observations by INTEGRAL and Swift have broadened significantly our understanding in particular for the super-giant systems in the Milky Way, which number has increased by almost a factor of three. INTEGRAL played a crucial role in the discovery, study and understanding of heavily obscured systems and of fast X-ray transients. Most super-giant systems can now be classified in three categories: classical/obscured, eccentric and fast transient.The classical systems feature low eccentricity and variability factor of ∼ 10 3 , mostly driven by hydrodynamic phenomena occurring on scales larger than the accretion radius. Among them, systems with short orbital periods and close to Roche-Lobe overflow or with slow winds, appear highly obscured. In eccentric systems, the variability amplitude can reach even higher factors, because of the contrast of the wind density along the orbit. Four super-giant systems, featuring fast outbursts, very short orbital periods and anomalously low accretion rates, are not yet understood.Simulations of the accretion processes on relatively large scales have progressed and reproduce parts of the observations. The combined effects of wind

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Section: Discussionmentioning

confidence: 97%

High-mass X-ray binaries in the Milky Way

Walter

Lutovinov

Bozzo

et al. 2015

Astron Astrophys Rev

230

234

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“…These confirmed that our algorithm worked as intended. In our Chandra observations, we identified the high-mass X-ray binary ( HMXB) 4U 1145À619 ( White et al 1978;Rutledge et al 2007), CXOU J164710.2À455216 (Muno et al 2006), and two sources toward the Galactic center (CXOC J174532.3À290251 and GXOGC J174532.7À290552; Muno et al 2003). In the XMM-Newton observations, we identified the pulsars Geminga ( Halpern & Holt 1992;Jackson & Halpern 2005) and PSR J1513À5908 (Seward & Harnden 1982), the HMXB Sct X-1 ( Koyama et al 1991;Kaplan et al 2007), and the magnetars 1E 1048.1À5937 (Seward et al 1986;Tiengo et al 2005), 1RXS J170849.0À400910 (Sugizaki et al 1997;Rea et al 2005), SGR 1806-20 (Murakami et al 1994;Mereghetti et al 2005), SGR 1900+14 (Hurley et al 1999;Mereghetti et al 2006a), XTE J1810À197 in outburst (Ibrahim et al 2004;Halpern & Gotthelf 2005), and 1E 2259+586 (Fahlman & Gregory 1981).…”

Section: Known Sourcesmentioning

confidence: 98%

A Search for New Galactic Magnetars in ArchivalChandraandXMM‐NewtonObservations

Muno

Gaensler

Nechita³

et al. 2008

ApJ

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We present constraints on the number of Galactic magnetars, which we have established by searching for sources with periodic variability in 506 archival Chandra observations and 441 archival XMM-Newton observations of the Galactic plane (jbj < 5 ). Our search revealed four sources with periodic variability on timescales of 200Y5000 s, all of which are probably accreting white dwarfs. We identify 7 of 12 known Galactic magnetars, but find no new examples with periods between 5 and 20 s. We convert this nondetection into limits on the total number of Galactic magnetars by computing the fraction of the young Galactic stellar population that our survey covered. We find that easily detectable magnetars, modeled after persistent anomalous X-ray pulsars (e.g., with L X ¼ 10 35 ergs s À1 [0.5Y 10.0 keV] and A rms ¼ 12%), could have been identified in %5% of the Galactic spiral arms by mass. If we assume that three previously known examples randomly fall within our survey, then there are 59 þ92 À32 in the Galaxy. Barely detectable magnetars (L X ¼ 3 ; 10 33 ergs s À1 and A rms ¼ 15%) could have been identified throughout %0.4% of the spiral arms. The lack of new examples implies that <540 exist in the Galaxy (90% confidence). Similar constraints are found by considering the detectability of transient magnetars in outburst. For assumed lifetimes of 10 4 yr, the birth rate of magnetars is between 0.003 and 0.06 yr À1 . Therefore, the birth rate of magnetars is at least 10% of that for normal radio pulsars, and could exceed that value, unless transient magnetars are active for k10 5 yr.

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“…: [475]; long-term X-ray history: [562,748]; opt. spectrum: [340,762]; vr sin i ∼ 270 km s −1 : [261,340]; system velocity: [721]; coordinated X-ray/opt. obs.…”

Section: Remarks On Some Individual Objectsmentioning

confidence: 99%

A catalogue of high-mass X-ray binaries

Liu

Paradijs

Heuvel

2000

Astron. Astrophys. Suppl. Ser.

194

204

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Abstract. We present a catalogue of high-mass X-ray binaries. The catalogue is an updated version of the catalogue of van Paradijs (1995). This new catalogue contains 130 sources, 61 new high-mass X-ray binaries in addition to the 69 sources listed in van Paradijs' catalogue. Most of the new sources are identified to be Be/X-ray binaries. Some sources, however, are only tentatively identified as high-mass X-ray binaries on the basis of a transient character and/or a hard X-ray spectrum. Further identification in other wavelength bands is needed to finally determine the features of these sources.The aim of this catalogue is to provide the reader with some basic information on the X-ray sources and their counterparts in other wavelength ranges (UV, optical, IR, radio). In cases where there is some doubt about the highmass nature of the X-ray binary this is mentioned. Some doubtful cases have not been included in the catalogue although they had been suggested by some authors to be high-mass X-ray binaries, for example GRS 1915+105 and 1WGA J1958.2+3232.

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Two X-ray periodicities from the vicinity of 4U1145–61

Cited by 26 publications

References 8 publications

High-mass X-ray binaries in the Milky Way

High-mass X-ray binaries in the Milky Way

A Search for New Galactic Magnetars in ArchivalChandraandXMM‐NewtonObservations

A catalogue of high-mass X-ray binaries

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