Supermassive black hole binaries (SMBHBs) in galactic nuclei are thought to be a common by–product of major galaxy mergers. We use simple disk models for the circumbinary gas and for the binary-disk interaction to follow the orbital decay of SMBHBs with a range of total masses (M) and mass ratios (q), through physically distinct regions of the disk, until gravitational waves (GWs) take over the...

Konzervacijska poljoprivreda sa svojim temeljnim principima (trajna pokrovnost tla, minimalna obrada i plodored) jedan je od najučinkovitijih sustava za prilagodbu poljoprivredne proizvodnje nepovoljnim uvjetima klimatskih promjena. Brojne prednosti konzervacijske poljoprivrede dodatno su izražene integracijom pokrovnih usjeva u plodored. Pokrovni usjevi uvode se inovativne sustave biljne svrhu...

We performed the first systematic search for the minimum variability time scale between 0.3 and 10 keV studying the 28 brightest early (< 3000 s) afterglows detected by Swift-XRT up to March 2008. We adopt the power spectrum analysis in the time domain: unlike the Fourier spectrum, this is suitable to study the rms variations at different time-scales. We find that early XRT afterglows show vari...

In this paper we propose an on-line Bayesian filtering and smoothing method for time series models with heavy-tailed α-stable noise, with a particular focus on TVAR models. α-stable processes have been shown in the past to be a good model for many naturally occurring noise sources, see e.g. [1, 2]. We first point out how a filter that fails to take into account the heavy-tailed character of the...

Spikes are short-time broadband events, which can last 20ms-70ms and amplitude is among 100?V-200?V. In this research, a novel spike detection method based on stationary wavelet transform (SWT) and time-varying autoregressive model is proposed. In the proposed method, the discrete stationary wavelet transform is initially applied on the signal under analysis to show the important underlying una...

Bu çalışmanın amacı Türkiye’de faiz oranlarının vade yapısına etki eden makroekonomik değişkenlerin belirlenmesidir. Faiz yapısı getiri eğrisi aracılığıyla analiz edilmektedir. Getiri eğrisinin tahmin edilmesinin ardından, yapısının hangi değişkenler tarafından belirlendiği Söz konusu analiz, doğrusal olmayan bir yöntem olan; Eşik VAR (Threshold VAR-TVAR) tekniği ile gerçekleştirilmektedir. Çal...