Immunohistochemical studies of proliferating cell nuclear antigen in oral squamous cell carcinoma.

Nagamine, Kouichiro; Okitsu, Mitsuhisa; Ohno, Jun; Fukunaga, Shuichi; Ohta, Chikako; Takeshima, Hiroshi; Shimada, Jun; Utsumi, Nobuo; Yamamoto, Yoshiro

doi:10.5794/jjoms.41.1

Cited by 1 publication

(2 citation statements)

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“…The absence of the bright optical counterpart to XMMU J031747.5−663010, its overall X‐ray properties (spectrum, pulsations, transient behaviour) and positional coincidence with NGC 1313 disc, allow us to conclude that it should be located outside our Galaxy and probably belongs to NGC 1313. The X‐ray pulsations and energy spectrum of XMMU J031747.5−663010 imply that it is almost certainly an accreting highly magnetized neutron star in a high‐mass binary system (White et al 1983; Nagase 1989). The association with NGC 1313 makes this source an extremely bright object with luminosity L X ∼ 1.6 × 10 39 erg s −1 , greatly exceeding the isotropic Eddington luminosity limit for a 1.4 M ⊙ neutron star accreting hydrogen‐rich material.…”

Section: Discussionmentioning

confidence: 99%

“…Since their discovery (Giacconi et al 1971; Tananbaum et al 1972), accreting X‐ray pulsars have been major objects for both observational and theoretical study (White, Swank & Holt 1983; Nagase 1989; Bildsten et al 1997). The majority of known X‐ray pulsars are high‐mass binary systems with supergiant or Be donors, clearly associated with younger stellar populations and regions of recent star formation (Charles & Coe 2006).…”

Section: Introductionmentioning

confidence: 99%

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XMM-Newton discovery of transient X-ray pulsar in NGC 1313

Trudolyubov

2008

Monthly Notices of the Royal Astronomical Society: Letters

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We report on the discovery and analysis of the transient X-ray pulsar XMMU J031747.5−663010 detected in the 2004 November 23 XMM-Newton observation of the spiral galaxy NGC 1313. The X-ray source exhibits pulsations with a period P ∼ 765.6 s and a nearly sinusoidal pulse shape and pulsed fraction ∼38 per cent in the 0.3-7 keV energy range. The X-ray spectrum of XMMU J031747.5−663010 is hard and well fitted with an absorbed simple power law of photon index ∼ 1.5 in the 0.3-7 keV energy band. The X-ray properties of the source and the absence of an optical/ultraviolet counterpart brighter than 20 mag allow us to identify XMMU J031747.5−663010 as an accreting X-ray pulsar located in NGC 1313. The estimated absorbed 0.3-7 keV luminosity of the source L X ∼ 1.6 × 10 39 erg s −1 , makes it one of the brightest X-ray pulsars known. Based on the relatively long pulse period and transient behaviour of the source, we classify it as a Be binary X-ray pulsar candidate. XMMU J031747.5−663010 is the second X-ray pulsar detected outside the local group, after transient 18 s pulsating source CXOU J073709.1+653544 discovered in the nearby spiral galaxy NGC 2403.

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