Latest Space News
Wed, 23 Jan 2019 00:13:31 +0000
NASA announced Jan. 22 that it is replacing an astronaut who was scheduled to fly on a commercial crew test flight later this year because of a medical issue. SpaceNews.com
Tue, 22 Jan 2019 21:47:46 +0000
Small launch vehicle developer Rocket Lab will launch an experimental satellite for the Defense Advanced Research Projects Agency in February, the first of a planned dozen launches in 2019. SpaceNews.com
Tue, 22 Jan 2019 20:50:11 +0000
ESA has awarded a contract to a group that includes Europe’s largest launch services provider and a former Google Lunar X Prize competitor to study a concept for a mission to mine lunar regolith. SpaceNews.com
Tue, 22 Jan 2019 12:22:24 +0000
The United Arab Emirates will seek to encourage both investment in space ventures in the country as well as investment by domestic funds into the broader space industry. SpaceNews.com
Mon, 21 Jan 2019 18:31:01 +0000
Griffin: “We think the best approach is a network of satellites in low orbit. How many, what orbit, all that is to be determined.” SpaceNews.com
Sat, 19 Jan 2019 02:31:25 +0000
Stratolaunch, the company founded by the late billionaire Paul Allen, said Jan. 18 that it is ending work on a launch vehicle that would be flown on the company’s giant aircraft. SpaceNews.com
Sat, 19 Jan 2019 00:44:05 +0000
QuadSat, a Danish company focused on testing and calibrating satellite antennas with quadcopters drones, plans to recruit satellite engineers with 700,000 euros ($796,000) raised in a seed investment round announced Jan. 16. SpaceNews.com
Fri, 18 Jan 2019 22:50:41 +0000
Blue Origin has rescheduled a test flight of its New Shepard suborbital vehicle for Jan. 21 as the company edges closer to flying people into space. SpaceNews.com
Fri, 18 Jan 2019 20:39:38 +0000
With the maiden flight of the Ariane 6 now 18 months away (in July 2020), Arianespace CEO Stéphane Israël said the company had anticipated signing a manufacturing contract with ArianeGroup in the second part of last year to begin production beyond the first rocket. SpaceNews.com
Fri, 18 Jan 2019 17:55:06 +0000
A new appropriations bill the House plans to vote on next week would provide $21.5 billion for NASA in 2019 but warns that any further problems with the James Webb Space Telescope could lead to its cancellation. SpaceNews.com
Thu, 17 Jan 2019 21:20:42 +0000
In an interview, Isotropic founder and CEO John Finney said Boeing and Isotropic agreed to several “strategic elements” that go beyond the cash investment. SpaceNews.com
Thu, 17 Jan 2019 20:51:20 +0000
Trump: Space ultimately is “going to be a very big part of our defense and offense." SpaceNews.com
Thu, 17 Jan 2019 19:23:51 +0000
The U.S. Air Force has obligated about $7 million of its $20 million budget for commercial satellite weather data. SpaceNews.com
Thu, 17 Jan 2019 16:11:17 +0000
Amid difficulties for the European launch industry, and with Brexit looming on the horizon, European Space Agency executives face a challenging year ahead. SpaceNews.com
Thu, 17 Jan 2019 16:04:30 +0000
Relativity, the startup developing a small launch vehicle using additive manufacturing technologies, announced Jan. 17 it has won approval from the U.S. Air Force to build a launch site at Cape Canaveral. SpaceNews.com
Thu, 17 Jan 2019 12:10:16 +0000
The White House has once again nominated Barry Myers to be administrator of NOAA, as well as four people to serve on the board of the Export-Import Bank. SpaceNews.com
Wed, 16 Jan 2019 23:52:00 +0000
Aireon said it signed the credit facility Dec. 21, and that it used the new funds to pay satellite operator Iridium $35 million before the end of 2018 for hosting its sensor payloads on the Iridium Next constellation. SpaceNews.com
Wed, 16 Jan 2019 23:30:44 +0000
Less than a week after laying off 10 percent of its employees, SpaceX said Jan. 16 that it plans to shift work on at least prototypes of its next-generation launch system from Los Angeles to Texas. SpaceNews.com
Wed, 16 Jan 2019 22:42:17 +0000
DIA report: U.S communications, reconnaissance, navigation and early warning satellites could be among the targets of China's counterspace weapons. SpaceNews.com
Wed, 16 Jan 2019 19:44:28 +0000
Move fast and break things, the mantra of Silicon Valley startups, has now spread to the space sector with Swarm Technologies going as far as breaking the law. 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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