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The Velocity Field from Type Ia Supernovae Matches the Gravity Field from Galaxy Surveys


 We compare the peculiar velocities of nearby SNe Ia with those predicted bythe gravity fields of full sky galaxy catalogs. The method provides a powerfultest of the gravitational instability paradigm and strong constraints on the density parameter 0.6/b. For 24 SNe Ia within 10,000 km s−1, we find theobserved SNe Ia peculiar velocities are well modeled by the predictions derivedfrom the 1.2 Jy IRAS survey and the Optical Redshift Survey (ORS). Our bestis 0.4 from IRAS, and 0.3 from the ORS, with > 0.7 and < 0.15 ruledout at 95% confidence levels from the IRAS comparison. Bootstrap resamplingtests show these results to be robust in the mean and in its error. The

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The Velocity Field from Type Ia Supernovae Matches the Gravity


 We compare the peculiar velocities of nearby SNe Ia with those predicted by the gravity fields of full sky galaxy catalogs. The method provides a powerful test of the gravitational instability paradigm and strong constraints on the density parameter  0.6/b. For 24 SNe Ia within 10,000 km s−1, we find theobserved SNe Ia peculiar velocities are well modeled by the predictions derivedfrom the 1.2 Jy IRAS survey and the Optical Redshift Survey (ORS). Our bestis 0.4 from IRAS, and 0.3 from the ORS, with > 0.7 and < 0.15 ruledout at 95% confidence levels from the IRAS comparison. Bootstrap resamplingtests show these results to be robust in the mean and in its error. The pr

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The peculiar velocity field: constraining the tilt of the Universe


A large bulk flow, which is in tension with the Lambda Cold Dark Matter (CDM) cosmologicalmodel, has been observed. In this paper, we provide a physically plausible explanation of this bulkflow, based on the assumption that some fraction of the observed dipole in the cosmic microwavebackground is due to an intrinsic fluctuation, so that the subtraction of the observed dipole leads toa mismatch between the cosmic microwave background (CMB) defined rest frame and the matterrest frame. We investigate a model that takes into account the relative velocity (hereafter the tiltedvelocity) between the two frames, and develop a Bayesian statistic to explore the likelihood of thistilted velocity.By studying variou

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لیسپ محاسبه مساحت و درج در داخل شکل


عنوان فارسی: برچسب مساحتعنوان انگلیسی: Area to Fieldدستور: A2Fبا این برنامه می توانید مساحت هر آبجکت یا مجموعه ای از آبجکت ها را در مکان مورد نظر برچسب بزنید بدون اینکه نیاز باشد مساحت محاسبه شده را به صورت دستی در مکانی درج نمایید.Program DescriptionThis program allows a user to create an MText object containing a Field Expression referencing the area, or sum of areas, of one or more selected objects.Upon issuing the command syntax A2F at the AutoCAD command-line, the user is prompted to make a selection of objects for which to retrieve the area; if more than one object is selected, the cumulative area for all objects will be displayed by the resultant MText Field.Following object selection, the user is prompted to pick a point at w

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سورس نرم افزار پیدا کردن دوست


سورس نرم افزار پیدا کردن دوست در سرتا سر جهانبه تفکیک سن, جنسیت, مکان و غیره سورس شامل PHP برای وب سایت , ECLIPSE آدرس سایت اصلی برای قیمت و دموی برنامهhttp://codecanyon.net/item/you-and-me-dating-app-with-admin-panel/12208618 امکانات     ورود امن  به سیستم اجتماعی این برنامه با پشتیبانی ورود با فیس بوک می باشد که با استفاده از SDK FB اجرا خواهد شد. کاربر یک بار در  وب سرور و تعدادی از جزئیات مانند دوستان،  با ثبت نام وارد شده، عکس ها از پروفایل فیس بوک خود را گرفته. برنامه درخواست کاربر برای به اشتراک گذاشتن / محل GPS خود و همچنین برای اطلاعیه های ارسال شده توسط مدیر از وب سرور استفاده می شود.     کاربران  نزدیک نشان داده شده . تمام پروفایل های تطبیق خواهد شد به شی

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Cosmological Constraints from Type Ia Supernovae Peculiar Velocity Measurements


The first compelling evidence that the Universe is undergoinga period of accelerated expansion was providedby observations of Type Ia supernovae (SNe) [1, 2].The data from many current [3, 4, 5] and near future[6, 7, 8, 9] surveys should eventually constrain the effectivedark energy equation of state to better than 10%.Density inhomogeneities cause the SNe to deviate fromthe Hubble flow, as gravitational instability leads to matterflowing out of under-densities and into over-densities.These “peculiar velocities” (PVs) lead to an increasedscatter in the Hubble diagram, of which several studieshave been made [10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,21, 22]. When combining low a

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Measuring cosmic bulk flows with Type Ia Supernovae from the Nearby Supernova Factory


  ABSTRACT Context. Our Local Group of galaxies appears to be moving relative to the Cosmic Microwave Background with the source of thepeculiar motion still uncertain. While in the past this has been studied mostly using galaxies as distance indicators, the weight oftype Ia supernovae (SNe Ia) has increased recently with the continuously improving statistics of available low-redshift supernovae.Aims. We measured the bulk flow in the nearby universe (0:015 < z < 0:1) using 117 SNe Ia observed by the Nearby SupernovaFactory, as well as the Union2 compilation of SN Ia data already in the literature.Methods. The bulk flow velocity was determined from SN data binned in

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Cosmic Bulk Flow and the Local Motion from Cosmicflows-2


Full sky surveys of peculiar velocity are arguably the best way to map the large scalestructure (LSS) out to distances of a few100 h????1Mpc. Using the largest and most accurateever catalog of galaxy peculiar velocities Cosmicflows-2, the LSS has been reconstructed bymeans of the Wiener filter (WF) and constrained realizations (CRs) assuming as a Bayesianprior model the CDM model with the WMAP inferred cosmological parameters. The presentpaper focuses on studying the bulk flow of the local flow field, defined as the mean velocityof top-hat spheres with radii ranging out to R = 500 h????1Mpc. The estimated LSS, in general,and the bulk flow, in particular, are determined by the tension between the observational dat

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دانلود ترجمه و اصل مقاله تاثیرات دینامیکی بارهای باد بر دمپر یا میراگر گرانشی


 ترجمه مقاله تاثیرات دینامیکی بارهای باد بر دمپر یا میراگر گرانشی در 15 صفحه ورد توسط مترجم تخصصی عمران ترجمه شده است. ترجمه از مقاله ISI سال 2015 می باشد که اصل مقاله نیز به همراه ترجمه ارائه شده است. دیگر نیازی به دانلود و ترجمه با صرف هزینه زیاد ندارید به راحتی فایل را دانلود کرده و در مقالات و پروژه های خود استفاده نمایید. چکیدهدمپر یا میراگر یا تعدیل گر گرانشی یک ابزار ایمنی است که برای تهویه هوا مورد استفاده قرار می گیرد و از طریق یک بازشو یا دریچه از وارد آمدن فشار بیش از حد به درون مجاری مختلف جلوگیری می کند. این وسیله در حالت عادی و در اثر نیروی وزن بصورت یک دریچه بسته است که اجازه کنترل و مدیریت هرگونه جرم هوای اضافی وارده در اثر جریان هوای ورودی را به ما میدهد. با ای

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A Comparison of Local SNIa with the IRAS PSCz Gravity Field


ABSTRACTWe compare the measured peculiar velocities of 98 local (< 150 h−1 Mpc) type Ia supernovaewith predictions derived from the PSCz survey. There is excellent agreementbetween the two datasets with a best fit I (= 0.6 m /bI) of 0.55 ± 0.06. Subsets of thesupernovae dataset are further analysed and the above result is found to be robustwith respect to culls by distance, host-galaxy extinction and to the choice of referenceframe in which the analysis is carried out. Alternative methods of determining I includingdensity-density comparisons, dipole measurements and WMAP-based resultsare also discussed. We conclude that most recent determinations are consistent witha value of I = 0.5.

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