Mustapha Ishak(-Boushaki), Professor of Physics and Astrophysics

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Journal publications (Incomplete -- see CV linked in home page for complete list):

1. " First detection of the GI-type of intrinsic alignments of galaxies using the self-calibration method in a photometric galaxy survey ", Eske M. Pedersen, Ji Yao, Mustapha Ishak, Pengjie Zhang. Astrophysical Journal Letters 899 L5 (2020). arXiv:1911.01614
   
   
2. " Separating the Intrinsic Alignment Signal and the Lensing Signal using Self-Calibration in Photo-z Surveys with KiDS450 and KV450 Data ", Ji Yao, Eske M. Pedersen, Mustapha Ishak, Pengjie Zhang, Anish Agashe, Haojie Xu, Huanyuan Shan. Monthly Notices of the Royal Astronomy Society 495 (2020) 3900. arXiv:1911.01582
   
   
3. " Testing General Relativity at Cosmological Scales ", Mustapha Ishak Invited review article in Living Reviews in Relativity 22 (2019) 1-204. arXiv:1806.10122
   
   
4. " Cosmological discordances III: more on measure properties, Large-Scale-Structure constraints, the Hubble constant and Planck ", Cristhian Garcia-Quintero, Mustapha Ishak, Logan Fox, Weikang Lin. Physical Review D 100 (2019) 123538. arXiv:1910.01608.
   
   
5. " ISiTGR: Testing deviations from GR at cosmological scales including dynamical dark energy, massive neutrinos, functional or binned parametrizations, and spatial curvature ", Cristhian Garcia-Quintero, Mustapha Ishak, Logan Fox, Jason Dossett. Physical Review D 100 (2019) 103530. arXiv:1908.00290
   
   
6. " Core Cosmology Library: Precision Cosmological Predictions for LSST. ", Nora Elisa Chisari, David Alonso, Elisabeth Krause, C. Danielle Leonard, Philip Bull, Jérémy Neveu, Antonio Villarreal, Sukhdeep Singh, Thomas McClintock, John Ellison, Zilong Du, Joe Zuntz, Alexander Mead, Shahab Joudaki, Christiane S. Lorenz, Tilman Troester, Javier Sanchez, Francois Lanusse, Mustapha Ishak, Renée Hlozek, Jonathan Blazek, Jean-Eric Campagne, Husni Almoubayyed, Tim Eifler, Matthew Kirby, David Kirkby, Stéphane Plaszczynski, Anze Slosar, Michal Vrastil, Erika L. Wagoner. Astrophysical Journal Supplement Series 241, 1 (2019) 2-40. arXiv:1812.05995
   
   
7. " Self-calibration method for II and GI types of intrinsic alignments ", Ji Yao, Mustapha Ishak, Michael Troxel, Monthly Notices of the Royal Astronomical Society, 483, 1, 276 (2018).
   
   
8. " Cosmological discordances: a new measure, marginalization effects, and application to geometry vs growth current data sets ", Weikang Lin, Mustapha Ishak, Physical Review D 96, 023532 (2017).
   
   
9. " Cosmological discordances. II. Hubble constant, Planck and large-scale structure data sets ", Weikang Lin, Mustapha Ishak , Physical Review D 96, 083532 (2017).
   
   
10. " Effects of Self-Calibration of Intrinsic Alignment on Cosmological Parameter Constraints from Future Cosmic Shear Surveys ", Ji Yao, Mustapha Ishak, Weikang Lin, M. A. Troxel, Journal of Cosmology and Astroparticle Physics 1710, 056 (2017).
    
    
11. " Testing gravity theories using tensor perturbations ", Weikang Lin, Mustapha Ishak, Physical Review D 94, 123011 (2016).
    
    
12. " Averaged universe confronted with cosmological observations: A fully covariant approach ", Tharake Wijenayake, Weikang Lin, Mustapha Ishak, Physical Review D 94, 083501 (2016).
    
    
13. " Ultra-faint dwarf galaxies: an arena for testing dark matter versus modified gravity ", Weikang Lin, Mustapha Ishak. Journal of Cosmology and Astroparticle Physics 1610, 025 (2016).
    
    
14. " Averaged universe confronted with cosmological observations: A fully covariant approach. ", Tharake Wijenayake, Weikang Lin, and Mustapha Ishak. Published in Physical Review D 94, 083501 (2016) Paper available at https://arxiv.org/abs/1604.03503.
    
    
15. " The Intrinsic Alignment of Galaxies and its Impact on Weak Gravitational Lensing in an Era of Precision Cosmology. ", M.A. Troxel, Mustapha Ishak. Invited Review Published in Physics Reports 558, 1-59, (2015): doi:10.1016/j.physrep.2014.11.001 (2014). Paper available at http://arxiv.org/abs/1407.6990.
    
    
16. " Constraints and tensions in testing general relativity from Planck and CFHTLenS including intrinsic alignment systematic. ", Jason N. Dossett, Mustapha Ishak, David Parkinson, Tamara M. Davis. Published in Physical Review D 92, 023003 (2015) Paper available at http://arxiv.org/abs/1501.03119.
    
    
17. " Expansion and Growth of Structure Observables in a Macroscopic Gravity Averaged Universe ", 3. Tharake Wijenayake, Mustapha Ishak. Published in Physical Review D 91, 063534, (2015) Paper available at http://arxiv.org/abs/1503.05796.
    
    
18. " Cross-correlation between cosmic microwave background lensing and galaxy intrinsic alignment as a contaminant to gravitational lensing cross-correlated probes of the universe ", M. A. Troxel, Mustapha Ishak Published in Physical Review D 89, (2014) 063528. Paper available at http://arxiv.org/abs/1401.7051.
    
    
19. " Effect of inhomogeneities on high precision measurements of cosmological distances ", Austin Peel, M. A. Troxel, Mustapha Ishak Published in Physical Review D 90, (2014) 123536. Paper available at http://arxiv.org/abs/1408.4390.
    
    
20. " The effects of structure anisotropy on lensing observables in an exact general relativistic setting for precision cosmology ", M. A. Troxel, Mustapha Ishak, Austin Peel Published in JCAP 1403:040, (2014). Paper available at http://arxiv.org/abs/1311.5936.
    
    
21. " Stringent Restriction from the Growth of Large-Scale Structure on Apparent Acceleration in Inhomogeneous Cosmological Models. ", Mustapha Ishak, Austin Peel, M.A. Troxel Published in Physical Review Letters 111, (2013) 251302. Paper available at http://arxiv.org/abs/1307.0723.
    
    
22. " Effects of Dark Energy Perturbations on Cosmological Tests of General Relativity ", Jason Dossett, Mustapha Ishak Published in Physical Review D 88, (2013) 103008. Paper available at http://arxiv.org/abs/1311.0726.
    
    
23. " Effects of anisotropy on gravitational infall in galaxy clusters using an exact general relativistic model. ", M.A. Troxel, Mustapha Ishak Published in JCAP 12 (2013) 048. Paper available at http://arxiv.org/abs/1311.5651.
    
    
24. " Large-scale growth evolution in the Szekeres inhomogeneous cosmological models with comparison to growth data. ", Austin Peel, Mustapha Ishak, M.A. Troxel Published in Physical Review D 86 (2012) 123508. Paper available at http://arxiv.org/abs/1212.2298.
    
    
25. " The growth of structure in the Szekeres inhomogeneous cosmological models and the matter-dominated era. ", Mustapha Ishak, Austin Peel. Published in Physical Review D 85 (2012) 083502. Paper available at http://arxiv.org/abs/1104.2590.
    
    
26. " Self-Calibration Technique for 3-point Intrinsic Alignment Correlations in Weak Lensing Surveys. ", M. A. Troxel, Mustapha Ishak, Published in Monthly Notices of the Royal Astronomy Society 419 (2012) 1804. Paper available at http://arxiv.org/abs/1109.4896.
    
    
27. " Self-calibrating the gravitational shear-intrinsic ellipticity-intrinsic ellipticity (GII) cross-correlation. ", 2. M. A. Troxel, Mustapha Ishak, Published in Monthly Notices of the Royal Astronomy Society 427 (2012) 442. Paper available at http://arxiv.org/abs/1205.1547.
    
    
28. " Spatial curvature and cosmological tests of general relativity. ", Jason Dossett, Mustapha Ishak. Published in Physical Review D 86 (2012) 103008. Paper available at http://arxiv.org/abs/1205.2422.
    
    
29. " Self-Calibration for 3-point Intrinsic Alignment Auto-Correlations in Weak Lensing Surveys. ", 2. M. A. Troxel, Mustapha Ishak, Published in Monthly Notices of the Royal Astronomy Society 423 (2012) 1663. Paper available at http://arxiv.org/abs/1203.2138.
    
    
30. " Testing General Relativity at Cosmological Scales: Implementation and Parameter ", 7. Jason Dossett, Mustapha Ishak, Jacob Moldenhauer. Published in Physical Review D 84, 123001 (2011). Paper available at http://arxiv.org/abs/1109.4583.
    
    
31. " Figures of merit and constraints from testing General Relativity using the latest cosmological data sets including refined COSMOS 3D weak lensing ", Jason Dossett, Jacob Moldenhauer, Mustapha Ishak. Published in Physical Review D 84, 023012 (2011). Paper available at astro-ph:arXiv:1006.0014.
    
    
32. " The Relevance of the Cosmological Constant for Lensing ", Mustapha Ishak, Wolfgang Rindler, Jason Dossett. Invited Review Article Published in General Relativity and Gravitation 42: 2247-2268 (2010). Paper available at astro-ph:arXiv:1006.0014.
    
    
33. " Luminosity distance and redshift in the Szekeres inhomogeneous cosmological models ", Anthony Nwankwo, Mustapha Ishak, John Thompson. Published in JCAP JCAP (2011). Paper available at astro-ph:arXiv:1006.0014.
    
    
34. " Constraints on growth index parameters from current and future observations ", Jason Dossett, Mustapha Ishak, Jacob Moldenhauer, Yungui Gong, Anzhong Wang. Published in JCAP 1004:022 (2010). Paper available at astro-ph:arXiv:1004.3086.
    
    
35. " Supernova, baryon acoustic oscillations, and CMB surface distance constraints on f(G) higher order gravity models ", Jacob Moldenhauer, Mustapha Ishak, John Thompson, Damien A. Easson. Published in Physical Review D 81, 063514 (2010). Paper available at astro-ph:arXiv:1004.2459.
    
    
36. " A minimal set of invariants as a systematic approach to higher order gravity models II: Physical and Cosmological Constraints" Jacob Moldenhauer, Mustapha Ishak.. Published in Journal of Cosmology and Astroparticle Physics 0912: 020 (2009). Paper available at astro-ph:arXiv:0912.5332.
    
    
37. " Growth factor parametrization in curved space", Yungui Gong, Mustapha Ishak, Anzhong Wang Published in Physical Review D 80, 023002 (2009). Paper available at astro-ph:arXiv:0903.0001.
    
    
38. " A minimal set of invariants as a systematic approach to higher order gravity models" Mustapha Ishak, Jacob Moldenhauer. Published in Journal of Cosmology and Astroparticle Physics 0901: 024 (2009). Paper available at astro-ph:arXiv:0808.0951.
    
    
39. " More on Lensing by a Cosmological Constant", Mustapha Ishak, Wolfgang Rindler, Jason Dossett, Monthly Notices of the Royal Astronomical Society Journal, at press February 2010. astro-ph:arXiv:0810.4956.
    
    
40. " Dark Energy or Apparent Acceleration Due to a Relativistic Cosmological Model More Complex than FLRW?" Mustapha Ishak, James Richardson, Delilah Whittington, David Garred, Roberto Sussman. Published in Physical Review D. 78, 123531, (2008). Paper available at astro-ph:0708.2943.
    
    
41. " Light Deflection, Lensing, and Time Delays from Gravitational Potentials and Fermat's Principle in the Presence of a Cosmological Constant" Mustapha Ishak. Published in Physical Review D. 78, 103006, (2008). Paper available at astro-ph:0708.2943.
    
    
42. " A new independent limit on the cosmological constant/dark energy from the relativistic bending of light by Galaxies and clusters of Galaxies" Mustapha Ishak, Wolfgang Rindler, Jason Dossett, Jacob. Moldenhauer, Chris Allison. Monthly Notices of the Royal Astronomical Society Journal, Volume 388, Issue 3, p1279 (2008) astro-ph:arXiv:0710.4726.
    
    
43. " Inverse approach to Einstein's equations for fluids with vanishing anisotropic stress tensor. " James Richardson, Mustapha Ishak. Physical Review D. 77 (2008) 044005. Paper available at gr-qc:0707.135.
    
    
44. " The Contribution of the Cosmological Constant to the Relativistic Bending of light Revisited " Wolfgang Rindler and Mustapha Ishak Physical Review D, 71, 023002 (2007) . Paper available at astro-ph:0709.2948 .
    
    
45. " Remarks on the formulation of the cosmological constant/dark energy questions(2007) " Mustapha Ishak. Foundations of Physics, Volume 37, Number 10, (2007) 1470-1498 . Paper available at astro-ph/0504416.
    
    
46. " Intrinsic galaxy alignments from the 2SLAQ and SDSS surveys: luminosity and redshift scalings and implications for weak lensing surveys(2007) " (2007) Christopher M. Hirata, Rachel Mandelbaum, Mustapha Ishak, Uros Seljak, Robert Nichol, Kevin A. Pimblet, Nicholas P. Ross, David Wake. Monthly Notices of the Royal Astronomical Society volume 381, 1197-1218 (2007). Paper available at astro-ph/0701671 .
    
    
47. "Probing Cosmic Acceleration Beyond the Equation of State: Distinguishing between Dark Energy and Modified Gravity Models" Mustapha Ishak, Amol Upadhye, David N. Spergel (2005). Preprint available at astro-ph/0507184. strong>Physical Review D, 74, 043513 (2006).
    Or click here at NASA' Beyond Einstein web site.
    Or related article in Astronomy Magazine.
    
    
48. "Probing decisive answers to dark energy questions from cosmic complementarity and lensing tomography" Mustapha Ishak (2005). Monthly Notices of the Royal Astronomical Society, V363, issue 2, p469 (2005) . Paper available at astro-ph/0501594 .
    
    
49. "Dynamical dark energy: Current constraints and forecasts" Amol Upadhye, Mustapha Ishak, Paul J. Steinhardt (2004). Physical Review D, 72, 063501 (2005) . Preprint available at astro-ph/0411803 .
    
    
50. "Detection of large scale intrinsic ellipticity-density correlation from the Sloan Digital Sky Survey and implications for weak lens ing surveys" Rachel Mandelbaum, Christopher M. Hirata, Mustapha Ishak, Uros Seljak, Jonathan Brinkmann (2005). Preprint available at astro-ph/0509026. Monthly Notices of the Royal Astronomical Society, 367 (2006) 611-626.
    
    
51. "Spectroscopic source redshifts and parameter constraints from weak lensing and CMB" Mustapha Ishak and Christopher M. Hirata (2004). Physical Review D, 71, 023002 (2005) . Paper available at astro-ph/0405042 .
    
    
52. "Weak Lensing and CMB: Parameter forecasts including a running spectral index" Mustapha Ishak, Christopher M. Hirata, Patrick McDonald, Uros Seljak (2003). Physical Review D, 69, 083914 (2004) . Paper available at astro-ph/0308446 .
    
    
53. "On Perfect Fluid Models In Non-Comoving Null (Observational) Spherical Coordinates," Mustapha Ishak (2003). Physical Review D, 69 , 124027 (2004) . Paper available at gr-qc/0405099 .
    
    
54. "An Inverse Approach to Einstein's Equations for non-conducting fluids" Mustapha Ishak and Kayll Lake (2003). Physical Review D, 68 , 104031 (2003) . Paper available at gr-qc/0304065 .
    
    
55. "Adiabatic Models of the Cosmological Radiative Era," Roberto A. Sussman and Mustapha Ishak. General Relativity and Gravitation, Vol. 34, No. 10, (2002). Paper available at gr-qc/0111010 .
    
    
56. "Stability of Transparent Spherically Symmetric Thin Shells and Wormholes," Ishak Mustapha and Kayll Lake. Physical Review D, 65 , 044011 (2002) . Paper also available at gr-qc/0108058.
    
    
57. "Interactive Geometric Database, Including Exact Solutions of Einstein's Field Equations," Mustapha Ishak and Kayll Lake. ,Classical and Quantum Gravity, 19 , 505-514 (2002) . Paper also available at gr-qc/0111008 . GRDB Version 1.0 was released on July 2001, and is available at http://grdb.org.
    
    
58. "The Tolman VII solution, trapped null orbits and w-modes," Nicholas Neary, Mustapha Ishak and Kayll Lake. Physical Review D, 64, 028001 (2001) . Paper also available at gr-qc/0104002.
    
    
59. "Exact solutions with w-modes," Mustapha Ishak, Luke Chamandy, Nicholas Neary and Kayll Lake. Physical Review D, 64, 024005 (2001) .Paper also available at gr-qc/0007073.