Latest Space News
Tue, 21 Aug 2018 22:02:00 +0000
A Colorado airport has received a commercial spaceport license from the Federal Aviation Administration despite a lack of announced users of the site and concerns about conflicts with aviation. SpaceNews.com
Tue, 21 Aug 2018 14:26:42 +0000
The possible creation of a Space Force gives Congress a “unique opportunity to shape the direction of U.S. national security space at this moment in time.” SpaceNews.com
Tue, 21 Aug 2018 11:12:35 +0000
Stratolaunch announced Aug. 20 that it is developing a family of vehicles, including a reusable spaceplane, that could launch from the giant aircraft it is developing. SpaceNews.com
Tue, 21 Aug 2018 10:00:45 +0000
Space is the third — and newest — disrupter in the last 156 years of education. Not since the passage of the Morrill Act in 1862 and the rise of America’s land-grant colleges has there been a movement this massive. Not since the enactment of the G.I. Bill in 1944 has there been a milestone this memorable. SpaceNews.com
Mon, 20 Aug 2018 17:54:03 +0000
New DoD report raises concerns about China’s counterspace weapons, including kinetic-kill missiles, ground-based lasers and orbiting space robots. SpaceNews.com
Mon, 20 Aug 2018 14:23:53 +0000
A growing talent gap is one of the biggest economic, cultural, and security risk this nation faces in the critical next two decades. SpaceNews.com
Mon, 20 Aug 2018 14:00:24 +0000
Relativity Space, the startup developing a small launch vehicle making extensive use of 3D-printing technologies, has brought on board a former SpaceX and Virgin Orbit executive to help grow the company. SpaceNews.com
Sun, 19 Aug 2018 18:24:07 +0000
Retired Air Force officer Wesley Hallman: “We all want this to work. But does it have to be a separate service?" SpaceNews.com
Sat, 18 Aug 2018 16:50:24 +0000
NASA announced Aug. 17 that it will allow SpaceX to use a fueling approach for its commercial crew missions that attracted prior scrutiny, pending a final series of tests. SpaceNews.com
Fri, 17 Aug 2018 02:34:20 +0000
The space industry outsider nominated to become NASA deputy administrator said he would focus on acquisition reform and adapting NASA to a “new role” with commercial partners if confirmed by the Senate. SpaceNews.com
Thu, 16 Aug 2018 21:48:01 +0000
A proposed standard announced at a conference last week seeks to provide the same launch flexibility for larger smallsats currently enjoyed by cubesats. SpaceNews.com
Thu, 16 Aug 2018 21:28:17 +0000
An audit by the Defense Department’s inspector general office found security cracks in the supply chain of four critical military space programs. SpaceNews.com
Thu, 16 Aug 2018 21:25:38 +0000
Canadian remote sensing company UrtheCast says it has sufficient resources to cover the $20 million purchase of analytics firm Geosys from U.S. dairy giant Land O’Lakes. SpaceNews.com
Thu, 16 Aug 2018 17:34:03 +0000
Millennium Space Systems was founded in 2001 and has approximately 260 employees. It has developed satellites ranging from 50 kg to more than 6,000 kg. SpaceNews.com
Thu, 16 Aug 2018 12:00:22 +0000
SSL, a company known for building communications satellites and spacecraft systems, will help the U.S. Air Force Space and Missile Systems Center define its next generation of protected military communications, the Maxar Technologies company announced Aug. 16. SpaceNews.com
Thu, 16 Aug 2018 09:20:11 +0000
The commercial spaceflight industry has been enjoying success both on and off the launch pad this year. SpaceNews.com
Thu, 16 Aug 2018 05:05:34 +0000
Descartes Labs announced Aug. 15 a partnership with Airbus to feed high resolution global imagery into its geospatial data platform. The Sante Fe, New Mexico-based startup also completed beta testing of its cloud-based “data refinery,” and added weather data. SpaceNews.com
Thu, 16 Aug 2018 00:21:09 +0000
International mistrust in space could become a bigger problem as the commercial space industry continues to grow and demand a peaceful environment to do business. SpaceNews.com
Wed, 15 Aug 2018 22:55:18 +0000
NASA says an Aug. 14 test of an engine for the Space Launch System was a success despite an unspecified “facility issue” that caused the test to end early. SpaceNews.com
Wed, 15 Aug 2018 18:18:44 +0000
ESA is pushing European industry to continue innovating and finding efficiencies even after Vega C’s introduction in 2019 and Ariane 6’s debut in 2020. SpaceNews.com
More space news...
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  • CV: PhD Student

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    Personal information
     Name:<withheld>
     Age:<withheld>
     Country:<withheld>
     Location:<withheld>
    Contact information
     Email:<withheld>
     Phone:<withheld>
     Mobile:<withheld>
    Candidate Profile
     Date Submitted:11-02-2013
     Last Modified:11-02-2013 (07:57)
    Job information
     Current job:PhD Student
     Employment Term:Temp/Contract
     Job location:Anywhere
     Date available:>3months
     Industry:Civil Agencies/International Organizations, Satellite Manufacturers and Subcontractors, Satellite Operators, , , Launch Systems, Business Services
     KeywordsPhD in astrophysics at Stanford University. Long term experience with astronomical data analysis and statistics.
    CV

    Personal

    Born on 29 November, 1984
    United States Citizen
    Speaks English (native) and German (fluent)



    Education

    Ph.D. Astrophysics, Stanford University, 2008-Present. Advisor: Steven Allen

    DAAD Research Fellowship, Max Planck Institute for Nuclear Physics, 2007-2008. Advisor: Werner Hofmann

    B.S. Physics and Mathematics, (Magna Cum Laude), Northwestern University, 2003-2007. Advisor: Melville Ulmer


    Awards and Fellowships

     German Academic Exchange Program (DAAD) Research Fellowship, 2007-2008
     Phi Beta Kappa Honors Society
     Outstanding Undergraduate Honors Thesis, Physics Department, Northwestern University, 2007



    Talks and Proceedings

     Ehlert, S.; et al,,  "X-ray Bright AGN in the Vicinity of Massive Galaxy Clusters", Half a Century of X-Ray Astronomy, Myknonos Island Greece, September 2012

     Ehlert, S.; et al., "Extreme AGN Feedback in the most X-ray luminous cooling cores: MACSJ1931.8-2634", Snowcluster, Snowbird UT, March 2010

     Becherini, Y.; Djannati-Atai, A.; Punch, M.; Bernl"{o}hr, K.; Ehlert, S. ; Masbou, J.; Moulin, E.; Arribas, M. Paz, "HESS-II reconstruction strategy and performance in the low-energy (20-150 GeV) domain", 4th Meeting on High Energy Gamma Ray Astronomy , Heidelberg Germany, August 2008

    Ehlert, S.; and Ulmer, M.P., "Iron Abundance and Temperature Gradients in High Redshift Galaxy Clusters", Meeting of the American Astronomical Society , Seattle WA, January 2007

    Successful Observing Proposals


    Spring 2012: ``An inside view: Does the fraction of X-ray AGN track the quenching of star formation in cluster galaxies?'', {it ESO VLT Period 90}, Anja von der Linden PI, 42 hours, 10 clusters

     

    Spring 2012: ``Tracing a Merger from Start to Finish in Abell 85'' {it Chandra Cycle 14} joint with {it Suzaku}, Steve Allen Funding PI, Steven Ehlert Observing Co-I, 160+100 ks. 

    Fall 2010: ``The Deep Impact of AGN Feeback in M84'' {it XMM-Newton Cycle 10} joint with {it VLT}, Steven Ehlert PI, 130 ks+2 hours. 

    Fall 2010: ``MACS J1931.8-2634: Destruction of a cluster cool core in technicolor'', {it ESO VLT Period 87A}, Anja von der Linden PI, 15 hours

    Teaching


    Center for Teaching and Learning Liason, Physics Department, 2012-2013 

    Teaching Assistant Mentor, Physics Department, 2011-2012

    Spring Quarter 2012: Physics 100, Teaching Assistant

    Spring Quarter 2011: Physics 100/301, Teaching Assistant

     Fall Quarter 2009: Physics 45 (Thermodynamics and Optics), Head Teaching Assistant

     Winter Quarter 2009: Physics 41 (Mechanics), Section Teaching Assistant.

    Further details on Teaching Positions:


    The Physics 40 series (41,43,and 45) at Stanford is a series of introductrory Physics courses that require the use of calculus. These courses are mandatory for young physics majors and most fields of engineering, and typical enrollment is approximately 300-400 students per quarter. Teaching assistants are typically given two sections of 18 students each for whom they supervise in a weekly 1 hour recitation section. The section teaching assistants are also responsible for grading problem sets and being the first contact for students when questions or concerns arise. All of the section teaching assistants are supervised by a head teaching assistant who communicates more directly with the instructor. The head teaching assistant's responsibilities include writing problem sets and examinations, providing vision and guidance to the section teaching assistants, and managing the unique administrative tasks that arise in a class of 300+ students.


    Physics 100 at Stanford is laboratory-based observational astronomy course utilizing the 0.4 and 0.6 m telescopes at the Stanford Student Observatory. Every other year the course is also open to graduate students (known as Physics 301). We teach the fundamentals of observational astronomy, statistics, and data analysis using an analysis pipeline built from scratch combined with new and archival telescope data. The course culminates with the students proposing and performing their own original research projects utilizing telescope data from the Stanford Student Observatory or other public archives. Previous projects of note include reconstructing satellite orbits from CCD image streaks and the detections of an extra-solar planet using the transit method.     


    The Physics Department at Stanford, in order to make their instruction more effective for undergraduate students, works closely with the Center for Teaching and Learning (CTL) at Stanford University in order to maintain a high standard of teaching across all classes. One of the key components of this program is the Teaching Assistant (TA) Mentor program, where experienced TA's are assigned to help provide insight and advice to new TA's as needed. Additionally, the Mentor TA's also perform mid-quarter evaluations of their mentee TA's, which allow the new TA's the opportunity to adjust their teaching strategies before the end of the quarter. One Mentor TA in particular is chosen to represent the department as the liason to the CTL, and help promote the exchange of ideas between the Physics Department and CTL. The CTL liason also, in conjunction with the CTL, helps develop new teaching approaches for the Physics department based on the departments particular needs and previous experience.

     
    Additional Service

    Representative to Congressional Offices, SLAC User's Organization, SLAC National Accelerator Laboratory



    Further Details on Service Positions:


    In March of 2012, I served as a member of the Slac Users Organization (SLUO, SLAC National Accelerator Laborary, Menlo Park CA) on their annual trip to Washington D.C. in order to thank members of the United States Congress for their continued support for high energy particle physics and astrophysics. Additionally, we spoke to the Congressional offices to emphasize the importance of stable, healthy long-term funding to our community and the United States at large and the broader impacts that cutting edge pure science research. This trip is undertaken every year along with representatives from Fermilab and the US users of the Large Hadron Collider. Over the course of two days in Washington DC, I spoke with 13 Congressional Offices in the U.S. House of Representatives and Senate as well as directors of the National Science Foundation and Department of Energy.   




    Skills and Competencies

    Computer Languages: Bash and C-Shell, Python, IDL, C++

    Machine Shop: Bandsaw, Lathe, Milling Machine



    Publications

    Journal Articles
    All of these articles have been accepted for publication in peer-reviewed journals.


    {bf Ehlert, S.}; Allen, S.W.; von der Linden, A.; Werner, N.; Simionescu, Kenney, J.D.P.; A.; Million, E. T.; Finoguenov, A.; ``Ripping at the Seams: The Network of Stripped Gas Surrounding M86'', accepted by MNRAS, arXiv # 1212.3612

    {bf Ehlert, S.}; Allen, S.W.; Brandt, W.N.; Xue, Y.Q.; Luo, B.; von der Linden, A.; Mantz, A.; and  Morris, R. G. ``X-ray Bright Active Galactic Nuclei in Massive Galaxy Clusters I: Number Counts and Spatial Distribution'', Monthly Notices of the Royal Astronomical Society, Volume 428, Issue 4

    {bf Ehlert, S.}; Allen, S. W.; von der Linden, A.; Simionescu, A.; Werner, N.; Taylor, G. B.; Gentile, G.; Ebeling, H.; Allen, M. T.; Applegate, D.; Dunn, R. J. H.; Fabian, A. C.; Kelly, P.; Million, E. T.; Morris, R. G.; Sanders, J. S.; Schmidt, R. W. ``Extreme active galactic nucleus feedback and cool-core destruction in the X-ray luminous galaxy cluster MACS J1931.8-2634'', Monthly Notices of the Royal Astronomical Society 2011, Volume 411, Issue 3

    {bf Ehlert, S.}; Ulmer, M. P. ``The radial dependence of temperature and iron abundance. Galaxy clusters from z = 0.14 to z = 0.89'', Astronomy and Astrophysics 2009, Volume 503, Issue 1

    Ulmer, M. P.; Graham, M. E.; Vaynman, S.; Echt, J.; Farber, M.; { bf Ehlert, S.}; Varlese, S. ``Progress Toward Light Weight High Angular Resolution Multilayer Coated Optics'', Experimental Astronomy 2005, Volume 20, Issue 1-3

       
     



    Journal Articles Near Completion
    These articles have either been submitted for publication or will soon be. All are in the final stages of preparation and the results in these papers are robust. You can find preprints at
    href{http://www.stanford.edu/~sehlert/cv.html}{tt http://www.stanford.edu/textasciitilde sehlert/cv.html}. 


    {bf Ehlert, S.}; Allen, S.W.; Brandt, W.N.; Xue, Y.Q.; Luo, B.; von der Linden, A.; Mantz, A.; and  Morris, R. G. ``X-ray Bright Active Galactic Nuclei in Massive Galaxy Clusters II: The fraction of galaxies hosting X-ray AGN''

    {bf Ehlert, S.}; Allen, S.W.; Brandt, W.N.; Xue, Y.Q.; Luo, B.; von der Linden, A.; Mantz, A.; and  Morris, R. G. ``X-ray Bright Active Galactic Nuclei in Massive Galaxy Clusters III:  The near-universal influence of the cluster environment''




     


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