Jared Workman's Research Page

Resume

As of April, 2010, I have officially completed my doctorate of Astrophysics at The University of Colorado, here is my dissertation. My advisor was Phil Armitage, aside from being a good researcher and a great advisor he also has a decent eye for photography.  Phil's Page. I spent one year as a post-doctorate scientist at the University of Rochester working with Eric Blackman and Chuang Ren. I am currently an assistant professor of physics at Colorado Mesa University and am still active in research. My current focus uses both magnetohydrodynamical (MHD) fluid simulations as well as analytical and semi-analytical moethods to studies various regimes dealing with high energy astrophysics.


If you are interested in reading about the effects of cooling fronts in gravitationally stratified media undergoing the magnetorotational-instability (MRI) then download my thesis or you can watch a movie showing the effects of a cooling front on the density profile of an MRI unstable patch of accretion disk.

My current and past research involves(d)

• Studying the dynamics and radiation physics of gamma ray burst afterglows

• Exploring the interaction of the gas cloud G2 with Sgr A*, the black hole at galactic center

• Studying analytical models of global atmospheric models in "Hot Jupiter" exoplanetary atmospheres

• Examining the effects of varying intitial mass functions and supernovae rates to determine theoretical stellar populations in galactic clusters.

• Studying current sheet dynamics, reconnection physics,  collisionless shocks, and particle acceleration in solar flares and astrophysical shocks using fluid based magnetohydrodynamic codes and particle in cell (PIC) codes as a multi-scale approach to modelling physical phenomena over a large range of  scales.

• Studying the effects of magnetic fields and thermal physics on variability in accretion disks around Neutron Stars, Black Holes, and White Dwarfs.

• Examining the effect of hydrodynamic turbulence on disks undergoing the MRI (magnetorotational instability)

• Simulating the spectrum of GRB afterglows (in their relativistically expanding phase) using  an emmision process which accounts for the randomly oriented magnetic field which are (likely) to be found in these regimes.  This process is known as 'Jitter Radiation' and was developed by  Mikhail Medvedev in "The Astrophysical Journal, Volume 540, Issue 2, pp. 704-714'

• Examing the interaction between magnetized molecular, turbulent molecular clouds and massive black holes.

• Studying the interaction between the Hall Effect and the MRI

Publications

• “G2 and Sgr A*: A Cosmic Fizzle At The Galactic Center”, Brian Morsony, Brandon Gracey, Jared Workman, DooSoo Yoon ApJ, Volume 843, Issue 1, 19 pp, 2017 Ads Link
  
  “Off-axis emission of short γ-ray bursts and the detectability of electromagnetic counterparts of gravitational wave detected binary mergers”, Davide Lazzati, Alex Deich, Brian Morsony, & Jared Workman, MNRAS, 2017 Astro Ph Preprint
  
  

• “Modeling The Afterglow of The Possible FERMI-GBM Event Associated with GW150914 ”, Brian Morsony, Jared Workman, and Dominic Ryan, ApjL, Volume 825, Issue 2, 2016 Astro Ph Preprint
  
  
• “Analytical Models of Exoplanetary Atmospheres: Atmospheric Dynamics via the Shallow Water System”, Kevin Heng and Jared Workman, ApjS, Volume 213, Issue 2, Article 27, 35 pp, 2014 Astro PH Preprint
  
  
• "Modeling Increased Metal Production in Galaxy Clusters with Pair-Instability Supernovae”, Brian Morsony, Caitlin Heath, and Jared Workman, MNRAS, Volume 441, pp 2134-2147, 2014 Astro PH Preprint
  
  
• "Particle-in-cell simulations of particle energization via shock drift acceleration from low Mach number quasi-perpendicular shocks in solar flares", Jaehong Park, Chuang Ren, Jared C. Workman, Eric G. Blackman, ApJ, 765, 147, 2013 Astro PH Preprint
  
  
• "Particle-in-cell simulations of particle energization from low Mach number fast mode shock", Jaehong Park, Jared C. Workman, Eric Blackman, Chuang Ren, and Robert Siller, Volume 19, 6, 2012 Astrop PH Preprint
  
  
• "Simulations reveal fast mode shocks in magnetic reconnection Outflows", Jared C. Workman, Eric Blackman, & Chuang Ren, Physics of Plasmas, Volume 18, 9, 2011 Astrop PH Preprint
  
  
• "Jitter radiation, images, spectra, and lightcurves from a relativistic, spherical blastwave",  Brian C. Morsony, Jared C. Workman,  Davide Lazzati, (JILA, U. Colorado), Mikhail V. Medvedev (U. Kansas) MNRAS, Volume 392, pp. 1397-1402, 2009 Astro PH Preprint
  
  
• "Jitter Radiation in gamma ray bursts and their afterglows: Emission and self absorption", Jared C. Workman, Brian C. Morsony,  Davide Lazzati, (JILA, U. Colorado), Mikhail V. Medvedev (U. Kansas) MNRAS, Volume 386, pp. 199-210, 2008 Astro PH Preprint
  
  
• "Interaction of the magnetorotational instability with hydrodynamic turbulence", Jared C. Workman & Philip J. Armitage, The Astrophysical Journal, Volume 685, pp. 406-417, 2008 Astro PH Preprint
  
  
• "Jitter radiation as a possible mechanism for Gamma-Ray Burst afterglows. Spectra and lightcurves",  Mikhail V. Medvedev (U. Kansas), Davide Lazzati, Brian C. Morsony, Jared C. Workman (JILA, U. Colorado)  The Astrophysical Journal, Volume 666, Issue 1, pp. 339-345, 2007 Astro PH Preprint
  
  

Conference Proceedings, Posters, & Talks

• “Low Accretion Rate Expected From G2 Gas Cloud”, Brian Morsony, Brandon Gracey, and Jared Workman, IAU General Assembly XXIX, Honolulu, Hawaii, August 3rd -14th 2015
  
  
• “The IMF in galaxy clusters: What is needed to account for high metal production”, Brian Morsony, Caitlin Heath, and Jared Workman, IAU General Assembly XXIX, Honolulu, Hawaii, August 3rd -14th 2015
  
  
• “Accounting for Anomalously High Metal Production in Galaxy Clusters”, Morsony, Brian J.; Heath, C.; Workman, J. C., American Astronomical Society, AAS Meeting #221, #226.06
  
  
• "PIC Simulations of particle energization From low Mach number fast mode shocks", Jaehong Park, Jared C. Workman, Eric G. Blackman, Chuang Ren, and Robert Siller, 220th Meeting, American Astronomical Society, Anchorage, Alaska, June 10th-14th, 2012
  
  
• "The importance of high-mass stars for metal enrichment in galaxy clusters", C. A. Heath, B. J. Morsony, and J. C. Workman 220th Meeting, American Astronomical Society, Anchorage, Alaska, June 10th-14th, 2012
  
  
• "Fast shocks in magnetic reconnection outflows", Jared C. Workman, Eric G. Blackman, and Chuang Ren, Division Plasma Physics, 53rd Annual Meeting, Salt Lake City, November 14th-18th, Utah, 2011
  
  
• "PIC simulations of low Mach number perpendicular shocks using the moving wall method and ion shock drift acceleration",Jaehong Park, Jared C. Workman, Eric G. Blackman, Chuang Ren, and Robert Siller, Division Plasma Physics, 53rd Annual Meeting, Salt Lake City,Utah, November 14th-18th, 2011
  
  

Astronomy Links

My Education and Schools

University of Rochester Physics and AStronomy Department

Professional

ADS database
The arXiv astrophysics archive
Astronomy conference list
American Astronomical Society
Astronomy job rumour mill
ApJ
PhD Jobs
Higher Ed Jobs
50 State Colleges
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Astrophysics Codes

NASA and Observatories

Spaceweather
SOHO (cool pictures of the sun)
SDO(more cool pictures of the sun)
Hubble (see the universe in optical light)
Chandra (see the universe in X-Ray)
Spitzer (see the universe in the infrared)
SDO Solar Dynamics Observatory
NASA
Kepler (Terrestial Planet Finder)
Astrobiology

Amateur

Heavens - Above (amateur astronomy viewing information)
Astrophysics Spectator - great information page

Home Page

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