Spectral lags caused by the Doppler effect of fireballs

Spectral lags caused by the curvature effect of fireballs

5 Characteristics of the curvature effect of uniform jets or spherical fireballs

Qin et al. (2004) have derived a formula of count rates based on a model of highly symmetric expanding fireballs, where the Doppler effect is the key factor to be concerned, and with their formula some characteristics of gamma-ray burst (GRB) pulses could be well explained. In this paper, we employ the formula to both the Qin modal and the uniform jet modal to study how the rising timescale, ∆τ...

A Study of the Real Exchange Rate Behavior and its Effects on Macroeconomic Variables

In this article, real exchange rate behavior and its effects on macroeconomic variables are studied by explaining two models; impulse function and forecasting predicted error decomposition. Studies show that high artificial currency value has caused domestic and foreign accounts equilibrium disturbance and foreign income decrease due to the slackening of commercial and agricultural activities, ...

A Novel Sampling Approach in GNSS-RO Receivers with Open Loop Tracking Method

Propagation of radio occultation (RO) signals through the lower troposphere results in high phase acceleration and low signal to noise ratio signal. The excess Doppler estimation accuracy in lower troposphere is very important in receiving RO signals which can be estimated by sliding window spectral analysis. To do this, various frequency estimation methods such as MUSIC and ESPRIT can be adopt...

Effects of R&D spending and Spill-Over on Agricultural TFP in Iran

Investing in research and development spending (R&D) affects total factor productivity (TFP).Recently new theories of economic growth have emphasized the relationship between R&D and TFPand also identified a number of channels through which a country’s R&D affects TFP of its tradepartner. This study seeks to estimate the effect of agricultural R&D and education spending and someother factors on...