210 research outputs found

    Using Chandra to Unveil the High-Energy Properties of the High-Magnetic Field Radio Pulsar J1119-6127

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    (shortened) PSR J1119-6127 is a high magnetic field (B=4.1E13 Gauss), young (<=1,700 year-old), and slow (P=408 ms) radio pulsar associated with the supernova remnant (SNR) G292.2-0.5. In 2003, Chandra allowed the detection of the X-ray counterpart of the radio pulsar, and provided the first evidence for a compact pulsar wind nebula (PWN). We here present new Chandra observations which allowed for the first time an imaging and spectroscopic study of the pulsar and PWN independently of each other. The PWN is only evident in the hard band and consists of jet-like structures extending to at least 7" from the pulsar, with the southern `jet' being longer than the northern `jet'. The spectrum of the PWN is described by a power law with a photon index~1.1 for the compact PWN and ~1.4 for the southern long jet (at a fixed column density of 1.8E22/cm2), and a total luminosity of 4E32 ergs/s (0.5-7 keV), at a distance of 8.4 kpc. The pulsar's spectrum is clearly softer than the PWN's spectrum. We rule out a single blackbody model for the pulsar, and present the first evidence of non-thermal (presumably magnetospheric) emission that dominates above ~3keV. A two-component model consisting of a power law component (with photon index ~1.5--2.0) plus a thermal component provides the best fit. The thermal component can be fit by either a blackbody model with a temperature kT~0.21 keV, or a neutron star atmospheric model with a temperature kT~0.14 keV. The efficiency of the pulsar in converting its rotational power, Edot, into non-thermal X-ray emission from the pulsar and PWN is ~5E-4, comparable to other rotation-powered pulsars with a similar Edot. We discuss our results in the context of the X-ray manifestation of high-magnetic field radio pulsars in comparison with rotation-powered pulsars and magnetars.Comment: 26 pages including 3 tables and 7 figures. Accepted for publication in Ap

    A ‘never before’ presentation of a common Mullerian abnormality

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    Transvaginal septum is one of uncommon Mullerian anomalies which may lead to infertility. We all depend so often on HSG and MRI for investigating these infecund patients. Here we bring out how a distended vaginal cavity with contrast mimicked the uterine cavity on HSG misleading the clinician. The septum was missed on MRI too initially. A simple surgical correction and the patient was able to conceive in her very first cycle

    Navigating the clinical ambiguity of implant placement in two young pubescent patients: an insight from two case reports

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    The horizon of implant dentistry has been ever-expanding owing to its long-term success in rehabilitating partially or completely edentulous cases. This perennial success and efficiency have encouraged clinicians to use osseo-integrated implants to replace teeth lost in children either due to trauma or congenital absence. Although a myriad of studies and publications suggest the placement of implants only after the attainment of skeletal maturity, as the growth-related changes such as remodelling, displacement, and mesial drift can put the future of implant and restoration in jeopardy, the use of implants in young pubescent or adolescent looks promising due to its evident psychological and social advantages over other contemporary alternatives such as a removable prosthesis or resin-bonded bridge. The first case report highlights a 16-year follow-up of a young girl treated at the age of 10 with an implant-supported prosthesis for the replacement of a missing maxillary left central incisor. The second case report centers around a 19-year-old teenage girl who underwent rehabilitation with a permanent fixed prosthesis, replacing her previous implant-supported temporary prosthesis. The implant was initially placed when she was 10 years old

    Irrigational impact of distillery Spentwash on the Germination and growth of Jatropha (Jatropha Curcas)and Sunflower (Helianthus Annuus) Oil Seed Plants

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    Germination of Jatropha (Jatropha curcas) and Sunflower (helianthus annuus) seeds was made by irrigated with distillery spentwash of different concentration. The spentwash i.e. primary treated spentwash [PTSW] 1:1, 1:2 and 1:3 spentwash were analyzed for their plant nutrients such nitrogen, phosphorous, potassium and physical &chemical characteristics. Experimental soil was tested for its physico-chemical parameters. Jatropha and Sunflower seeds were sowed in the prepared land and irrigated with raw water (RW), 1:1, 1:2 and 1:3 spent wash. The nature of germination and growth of seed was studied, It was found that, the germination as well as growth was good(100%) in 1:3 SW irrigation, while very poor in 1:1 SW(25%),moderate in 1:2 SW(80%) and 95% in RW irrigation
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