نتایج جستجو برای: gas emission
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The γ-ray sky as we know it today is a composite of the emission from point sources and diffuse emission (see Fig.1). The most prominent feature is the galactic plane, in which interactions between cosmic rays and the thermal gas lead to γ-ray emission by π-decay and bremsstrahlung. On top of this diffuse emission we see point sources all over the map, part of them being pulsars, another part d...
the global temperature has increased over the past years, and international community attempt to reduce greenhouse emissions to the atmosphere. in this study the potential of some agriculture sections for emission and absorption of co2 and ch4 was examined. rice and wheat which are two strategic crops in iran were selected for this purpose and the amounts of organic carbon loss in the form of c...
Wehavemappedλ18cmOH andλ9cmCH emission from the diffuse gas around ζ Oph, and find no trace of emission from the +4.5 km s−1 gas whose OH line was previously believed to represent pre-shock gas. The pattern of OH emission is strikingly dissimilar to those of CO, HCO+ and CH in that the strong +1 km s−1 component seen to the South is largely absent in OH. CH more closely resembles CO, peaking on...
We present the emission-line fluxes and kinematics of 48 representative elliptical and lenticular galaxies obtained with our custom-built integral-field spectrograph SAURON operating on the William Herschel Telescope. Hβ, [O III]λλ4959,5007, and [N I]λλ5198,5200 emission lines were measured using a new procedure that simultaneously fits both the stellar spectrum and the emission lines. Using th...
We present a study of available Hubble Space Telescope (HST) spectroscopic and imaging observations of the low ionization nuclear emission line region (LINER) galaxy NGC 1052. The WFPC2 imagery clearly differentiates extended nebular Hα emission from that of the compact core. Faint Object Spectrograph (FOS) observations provide a full set of optical and UV data (1200-6800Å). These spectral data...
A comprehensive technical analysis of available industry-reported well activity and production data for Alberta in 2011 has been used to derive flaring, venting, and diesel combustion greenhouse gas and criteria air contaminant emission factors specifically linked to drilling, completion, and operation of hydraulically fractured natural gas wells. Analysis revealed that in-line ("green") comple...
INTRODUCTION Korea has been making efforts to reduce greenhouse gas (GHG) emissions, including a voluntary commitment to the target of a 30% reduction, based on business-as-usual of the total GHG emission volume, by 2020; 2006 IPCC Guidelines provided default values, applying country-specific emission factors was recommended when estimating national greenhouse gas emissions. RESULTS AND DISCU...
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