Search Results - "Shalaby, Mohamad"

Missing Gamma-Ray Halos and the Need for New Physics in the Gamma-Ray Sky by Broderick, Avery E., Tiede, Paul, Chang, Philip, Lamberts, Astrid, Pfrommer, Christoph, Puchwein, Ewald, Shalaby, Mohamad, Werhahn, Maria

“…An intergalactic magnetic field (IGMF) stronger than 3 × 10−13 G would explain the lack of a bright, extended degree-scale, GeV-energy inverse Compton…”
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Growth of Beam-Plasma Instabilities in the Presence of Background Inhomogeneity by Shalaby, Mohamad, Broderick, Avery E., Chang, Philip, Pfrommer, Christoph, Lamberts, Astrid, Puchwein, Ewald

“…We explore how inhomogeneity in the background plasma number density alters the growth of electrostatic unstable wavemodes of beam-plasma systems. This is…”
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Importance of Resolving the Spectral Support of Beam-plasma Instabilities in Simulations by Shalaby, Mohamad, Broderick, Avery E., Chang, Philip, Pfrommer, Christoph, Lamberts, Astrid, Puchwein, Ewald

“…Many astrophysical plasmas are prone to beam-plasma instabilities. For relativistic and dilute beams, the spectral support of the beam-plasma instabilities is…”
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THE LINEAR INSTABILITY OF DILUTE ULTRARELATIVISTIC e PAIR BEAMS by Chang, Philip, Broderick, Avery E., Pfrommer, Christoph, Puchwein, Ewald, Lamberts, Astrid, Shalaby, Mohamad, Vasil, Geoffrey

“…ABSTRACT The annihilation of TeV photons from extragalactic TeV sources and the extragalactic background light produces ultrarelativistic beams, which are…”
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THE EFFECT OF NONLINEAR LANDAU DAMPING ON ULTRARELATIVISTIC BEAM PLASMA INSTABILITIES by Chang, Philip, Broderick, Avery E, Pfrommer, Christoph, Puchwein, Ewald, Lamberts, Astrid, Shalaby, Mohamad

“…Very high energy gamma-rays from extragalactic sources produce pairs from the extragalactic background light, yielding an electron-positron pair beam. This…”
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Ameliorative Effect of Zinc Oxide Nanoparticles on Nicotine Induced Testicular Dysfunction; Biochemical and Histological Study by Mahmoud, Abeer Ramzy Hussieny, Shalaby, Nashwa Mohamad Mohamad

“…Objective The aim of this study was to evaluate potential impact of zinc oxide nanoparticle on the possible testicular toxicity induced by nicotine. Methods 24…”
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Predictors of clinical and surgical characteristics of giant stones of the urinary bladder: a retrospective study by Gadelkareem, Rabea Ahmed, Shalaby, Mahmoud Mohamad, Faddan, Amr Abou

“…Giant stones of the urinary bladder (GSBs) are rare and usually presented as case reports. We aimed to assess the clinical and surgical characteristics of GSBs…”
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Serum creatinine trajectory after drainage of kidneys with bilateral malignant ureteral obstruction: a prospective non-randomized comparative study by Gadelkareem, Rabea Ahmed, Abdelraouf, Ahmed Mahmoud, El-Taher, Ahmed Mohammed, Ahmed, Abdelfattah Ibrahim, Shalaby, Mahmoud Mohamad

“…Serum creatinine trajectory (SCr-Tr) is a neglected prognostic tool for chronic and acute kidney injury. We aimed to assess the predictors of SCr-Tr during the…”
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A New Cosmic-Ray-driven Instability by Shalaby, Mohamad, Thomas, Timon, Pfrommer, Christoph

“…Abstract Cosmic-ray-driven (CR-driven) instabilities play a decisive role during particle acceleration at shocks and CR propagation in galaxies and galaxy…”
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Effectiveness of hesperidin against toxic effect of silver nanoparticles on the brain via apoptotic/antiapoptotic pathway in adult albino rats by Mahmoud, Abeer Ramzy Hussieny, Shalaby, Nashwa Mohamad Mohamad

“…Objective The existing work aims to assess the role of hesperidin against silver oxide nanoparticles-induced toxic changes in brain of adult albino rats…”
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The Mechanism of Efficient Electron Acceleration at Parallel Nonrelativistic Shocks by Shalaby, Mohamad, Lemmerz, Rouven, Thomas, Timon, Pfrommer, Christoph

“…Abstract Thermal electrons cannot directly participate in the process of diffusive acceleration at electron–ion shocks because their Larmor radii are smaller…”
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SHARP: A Spatially Higher-order, Relativistic Particle-in-cell Code by Shalaby, Mohamad, Broderick, Avery E., Chang, Philip, Pfrommer, Christoph, Lamberts, Astrid, Puchwein, Ewald

“…Numerical heating in particle-in-cell (PIC) codes currently precludes the accurate simulation of cold, relativistic plasma over long periods, severely limiting…”
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Constraints on the Intergalactic Magnetic Field from Bow Ties in the Gamma-Ray Sky by Tiede, Paul, Broderick, Avery E., Shalaby, Mohamad, Pfrommer, Christoph, Puchwein, Ewald, Chang, Philip, Lamberts, Astrid

“…Pair creation on the cosmic infrared background and subsequent inverse-Compton scattering on the cosmic microwave background potentially reprocesses the TeV…”
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PATCHY BLAZAR HEATING: DIVERSIFYING THE THERMAL HISTORY OF THE INTERGALACTIC MEDIUM by Lamberts, Astrid, Chang, Philip, Pfrommer, Christoph, Puchwein, Ewald, Broderick, Avery E., Shalaby, Mohamad

“…ABSTRACT TeV-blazars potentially heat the intergalactic medium (IGM) as their gamma rays interact with photons of the extragalactic background light to produce…”
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BOW TIES IN THE SKY. I. THE ANGULAR STRUCTURE OF INVERSE COMPTON GAMMA-RAY HALOS IN THE FERMI SKY by Broderick, Avery E., Tiede, Paul, Shalaby, Mohamad, Pfrommer, Christoph, Puchwein, Ewald, Chang, Philip, Lamberts, Astrid

“…ABSTRACT Extended inverse Compton halos are generally anticipated around extragalactic sources of gamma rays with energies above 100 GeV. These result from…”
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Bow Ties in the Sky. II. Searching for Gamma-Ray Halos in the Fermi Sky Using Anisotropy by Tiede, Paul, Broderick, Avery E., Shalaby, Mohamad, Pfrommer, Christoph, Puchwein, Ewald, Chang, Philip, Lamberts, Astrid

“…Many-degree-scale gamma-ray halos are expected to surround extragalactic high-energy gamma-ray sources. These arise from the inverse Compton emission of an…”
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Constraining blazar heating with the 2 ≲ z ≲ 3 Lyman-α forest by Lamberts, Astrid, Puchwein, Ewald, Pfrommer, Christoph, Chang, Philip, Shalaby, Mohamad, Broderick, Avery, Tiede, Paul, Rudie, Gwen

“…ABSTRACT The intergalactic medium (IGM) acts like a calorimeter recording energy injection by cosmic structure formation, shocks and photoheating from stars…”
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Outcomes of Locally Advanced Rectal Cancer Patients Following Complete Clinical Response After Neoadjuvant Treatment by Ashour, May, Armanious, Sylvia, Rashad, Heba, Gamal, Heba, Shalaby, Mohamad, Selim, Marwa, Zaghloul, Somaya, Khorshed, Eman, Abdelfatah, Dalia, Abdelazim, Yasser

“…Background Watchful waiting and non-operative management of patients with complete clinical response to neoadjuvant treatment in locally advanced rectal…”
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Integration of 1D and 3D modeling schemes to establish the Farewell Formation as a self-sourced reservoir in Kupe Field, Taranaki Basin, New Zealand by QADRI, S.M. Talha, ISLAM, Md Aminul, SHALABY, Mohamad Ragab, ALI, Syed Haroon

“…Along with conventional methods, this paper proposed a method in which 1D and 3D models are integrated to identify the self-sourced reservoir potential of the…”
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The theory of resonant cosmic ray-driven instabilities -- Growth and saturation of single modes by Lemmerz, Rouven, Shalaby, Mohamad, Pfrommer, Christoph, Thomas, Timon

“…Cosmic ray (CR) feedback is critical for galaxy formation as CRs drive galactic winds, regularize star formation in galaxies, and escape from active galactic…”
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