Latest Space News
Sun, 21 Jul 2019 02:53:09 +0000
NASA and the White House used the 50th anniversary of the Apollo 11 landing to mark the latest achievement in the development of the Orion spacecraft and reaffirm plans to use it to return humans to the moon by 2024. SpaceNews.com
Sat, 20 Jul 2019 21:27:21 +0000
The SDA is preparing to host its first public meeting with space industry contractors as it tries to reassure skeptics. SpaceNews.com
Sat, 20 Jul 2019 12:00:00 +0000
Indeed, we were witnessing “one small step for man, one giant leap for mankind.” Nevertheless, my maternal grandmother who lived with us and was born in Eastern Europe in 1890, exclaimed, “I don’t believe it and will never believe it.” SpaceNews.com
Sat, 20 Jul 2019 04:01:20 +0000
Fifty years after Apollo 11, we are in a far better position, and so much closer, to return to the moon and send humans to Mars than we ever have been in the past. There are still many technical challenges to overcome, but the biggest challenge remains the political will to do so. SpaceNews.com
Fri, 19 Jul 2019 20:22:00 +0000
Satellite and rocket hardware provider Ruag Space signed a contract with Firefly Aerospace to provide payload adapters for its small launch vehicles. SpaceNews.com
Fri, 19 Jul 2019 20:00:29 +0000
During the decades since the cancellation of the Apollo program, some have used the Chinese treasure fleets of the early 1400s as a cautionary tale. SpaceNews.com
Fri, 19 Jul 2019 19:31:29 +0000
Rocket Lab passed a milestone in the production of its Electron rocket as the company gears up for its next launch and continues work on a new launch facility. SpaceNews.com
Fri, 19 Jul 2019 17:23:00 +0000
The Connect Bidco consortium told the British government that for at least three years it would keep Inmarsat’s core network operations center and skilled engineering resources in the country once the merger, expected to close late this year, is complete.  SpaceNews.com
Fri, 19 Jul 2019 15:18:10 +0000
China carried out the controlled deorbiting of its Tiangong-2 space lab into the South Pacific, the China Manned Space Engineering Office (CMSEO) announced Friday. SpaceNews.com
Fri, 19 Jul 2019 13:36:28 +0000
Kevin O’Connell, director of the Commerce Department’s Office of Space Commerce, said the repository, called the Unified Data Library, is the first step in the transfer of some space situational awareness responsibilities as requested by the White House last year.  SpaceNews.com
Fri, 19 Jul 2019 12:00:53 +0000
The story of the Apollo program, the many heroes in the headlines and those behind-the-scenes, the unprecedented crisis and tragedies that were overcome to fulfill a martyred President’s bold promise, is a story as compelling as any great novel or Greek myth. SpaceNews.com
Fri, 19 Jul 2019 01:26:17 +0000
NASA has decided to extend the lifetimes of all eight astrophysics missions up for review, from large space telescopes to an instrument on the International Space Station. SpaceNews.com
Thu, 18 Jul 2019 23:17:32 +0000
The U.K. will invest $34 million in small satellites, will increase support for the Combined Space Operations Center. SpaceNews.com
Thu, 18 Jul 2019 17:00:44 +0000
History is now repeating itself. President Trump has declared he wants to send astronauts to the moon by 2024 and then Mars by 2033. But, in other words, NASA is saying to Trump the same thing it said to Bush: “You can’t do your program until you do my program.” SpaceNews.com
Thu, 18 Jul 2019 16:49:15 +0000
Virgin Galactic’s merger with a publicly-traded investment company is likely a one-off event based on the company and people involved, and not a sign of more fundamental changes in the industry, investors argue. SpaceNews.com
Thu, 18 Jul 2019 13:39:00 +0000
A half-century after developing the computers that guided the Apollo missions to the moon, Draper is working on technologies that it says can enable new human and robotic missions to the moon in the near future. SpaceNews.com
Thu, 18 Jul 2019 13:00:47 +0000
Just as we have built on the foundation provided by the Apollo astronauts, the next generation will build on our achievements, and future generations on theirs. SpaceNews.com
Thu, 18 Jul 2019 12:00:22 +0000
As we celebrate the 50th anniversary of the first humans to walk on the moon, you might notice we aren’t celebrating it on the moon. Why? SpaceNews.com
Thu, 18 Jul 2019 02:44:31 +0000
NASA Administrator Jim Bridenstine told a Senate committee July 17 that a cost estimate for landing humans on the moon by 2024 likely won’t be ready until the administration submits a budget request next February. SpaceNews.com
Thu, 18 Jul 2019 01:30:08 +0000
A company Cisco is poised to buy for $2.6 billion is required to pay damages to Viasat for failing to pay royalties on a decade-old technology it used from the satellite operator.  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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