Jazeel Hussein

Nahrain University · Department of Physics

Keywords In this research velocity of moving airplane from its recorded digital sound is introduced. The data of sound file is sliced into several frames using overlapping partitions. Then the array of each frame is transformed from time domain to frequency domain using Fourier Transform (FT). To determine the characteristic frequency of the sound,...

The impetus for researching the L CO(1-0) -L FIR connection at sub-kpc levels comes from the opportunity to improve our knowledge of the intricate processes regulating star formation, molecular gas dispersion, and galaxies’ overall evolution. We use a high spatial resolution ¹² CO(1–0) line emission data from the Atacama Large Millimeter/Submillime...

A new model of rotation curves in spiral galaxies is derived and applied to several spiral galaxies. This model is based on a new theory called the ‘time of events’ theory, which was published elsewhere. The theory led to derive a multiscale model that applies to the problem of rotation curves in the galaxies as a non-adiabatic system. The equation...

Merging galaxies provide an excellent laboratory for investigating several physical properties related to the merging processes. In this research, high-resolution 12CO (J= 1 – 0) data of the molecular gas was reported in the merging galaxy VV114 from the Atacama Large Millimetre/Sub-millimetre Array (ALMA) to study some of the physical characterist...

Understanding the galaxy's center few hundred parsecs is important for knowing how galaxies form and evolve. Since molecular gas is the source of star formation, it is an essential part of the interstellar medium (ISM). In this work, we display high- resolution data from the Atacama Large Millimeter/Sub-millimeter Array (ALMA) of 12^CO(J = 6 - 5) e...

Understanding the galaxy's center few hundred parsecs is important for knowing how galaxies form and evolve. Since molecular gas is the source of star formation, it is an essential part of the interstellar medium (ISM). In this work, we display highresolution data from the Atacama Large Millimeter/Sub-millimeter Array (ALMA) of 12CO(J = 6 - 5) emis...

Starburst merging galaxies are important in the history of galaxy evolution timeline. For this work, we have chosen the Antennae galaxy (NGC4039), which is one of the most famous starburst merging galaxies. We analyzed the CO (3–2) interferometric observations for the southern mosaic of the NGC 4039, together with the CO (2–1) data taken from Ataca...

Studying dense gas is of fundamental importance for understanding star formation and galaxy evolution. We present data from the Atacama Large Millimeter/Submillimeter Array (ALMA) for the dense molecular gas tracers HNC (hydrogen isocyanide) with transition J = 2-1, CS (carbon monosulfide) with transition J = 4-3, and CO (carbon monoxide) with tran...

In this manuscript we use a very high spatial resolution CO (J = 6 - 5) data from Atacama Large Millimeter/Sub-millimeter Array (ALMA) focused to the center region of Arp 220, at distance D = 77.4 Mpc (1 arcsecond = 375 parsec). The CO emission is resolved efficiently by ALMA beam (0.43" x 0.26"). We use long-slit along different direction of our s...

In the present work, a multiscale Hall-Petch relation is derived from a new multiscale model and applied for all ranges of grain sizes. The derived multiscale Hall-Petch relation has a superior over the previous models represented by its direct applicability on any material without the need for prior knowledge of grain size distribution. The new mu...

In the present work, a generalized form for the energy equation is derived following the concepts of a new theory called the time of events theory. This theory assumes a dynamic space-time in addition to the static space-time assumed explicitly in the special theory of relativity and implicitly in quantum mechanics. Assuming two spacetimes necessit...

In this paper we present high resolution data from Atacama Large Millimeter /sub-millimeter Array (ALMA) of CO (5-4) and CO (8-7) rotational transitions toward the gravitational lensed galaxy (SDP.81). We calculate the molecular gas mass in the clumpy region which is around 1.5109 Mʘ. We overly the CO(8- 7) and CO(5- 4) intensity distributions to...

In the present work, a multiscale model is presented and used to modify the Hall-Petch relation for different scales from nano to micro. The modified Hall-Petch relation is derived from a multiscale equation that determines the cohesive energy between the atoms and their neighboring grains. This brings with it a new term that was originally ignored...

We present an extensive analysis of the relationship between star formation rate surface density (∑SFR) and molecular gas surface density (∑H2) at sub-kpc scale in the elliptical galaxy Centaurus A (also known as NGC 5128) at the distance 3.8 Mpc. 12CO (J = 2-1) data from Atacama Large Millimetre / Sub-millimetre Array SV data with very high resolu...

We present the Atacama Large Millimeter/Sub-millimeter Array (ALMA) cycle-0 science verification data of the CO(1–0) line emission in the central region of NGC 4321 (also known as M100) at the distance of 17.1 Mpc and VLA, L-band data of HI of the same galaxy. We have drawn the center area of M100 in the 12CO(J = 1–0) line with the resolution of (3...

Using Atacamma Large Millimeter/Submillimeter Array (ALMA) science verification data, the CO J=1→0 emission in the nucleus of barred SABbc spiral galaxy M100 (which also known as NGC 4321) has been drawn at high resolution (3.44″ × 2.46″). A new (Position — Velocity) diagram of the central (1 kpc) region of the mentioned galaxy has been analyzed to...

In the present study, a new theory that relates the special theory of relativity with quantum mechanics is formulated and then used to explain the remote instantaneous response of entangled particles without the assumptions of nonlocality or hidden variables. The basic assumptions of the present theory stands on the foundation of two space-times, n...

Keywords In this research velocity of moving airplane from its recorded digital sound is introduced. The data of sound file is sliced into several frames using overlapping partitions. Then the array of each frame is transformed from time domain to frequency domain using Fourier Transform (FT). To determine the characteristic frequency of the sound,...

In this research the sound file recorded for a moving airplane has been sliced into several frames using overlapped window. Then the array of each frame is transformed from the time domain into frequency domain using Fourier Transform (FT). To determine the characteristic frequency of the sound, a moving window technique was used, the size of that...