Latest Space News
Tue, 19 Sep 2017 14:53:00 +0100
With the ''Space Strategy for Europe'' from the European Commission and the new ESA roadmap on the table, the European space stakeholders will have the great opportunity to debate and influence, at the highest level, the medium and long term development of European space programmes and of the spread of space services in many economic and societal activities as well as in a wide range of public fields, including security and defence. Download Conference Agenda | Register to a...
Tue, 19 Sep 2017 08:19:00 +0100
NASA's Hubble Space Telescope has observed a planet outside our solar system that looks as black as fresh asphalt because it eats light rather than reflecting it back into space. This light-eating prowess is due to the planet's unique capability to trap at least 94 percent of the visible starlight falling into its atmosphere. The oddball exoplanet, called WASP-12b, is one of a class of so-called "hot Jupiters," gigantic, gaseous planets that orbit very close to their host ...
Fri, 15 Sep 2017 18:13:00 +0100
Raytheon Company (NYSE: RTN) will continue its support for NOAA's Advanced Weather Interactive Processing System program that ingests and analyzes weather data, creating useful visualizations for forecasters and distributing time-sensitive weather statements such as watches and warnings across the United States. Used by more than 140 National Weather Service field offices, the AWIPS program informs decisions that save lives and protect property during natural disasters. Under the $269 mill...
Fri, 15 Sep 2017 15:00:00 +0100
The international Cassini mission has concluded its remarkable exploration of the Saturnian system in spectacular style, by plunging into the gas planet's atmosphere. Confirmation of the end of mission arrived at NASA's Jet Propulsion Laboratory at 11:55 GMT/13:55 CEST with the loss of the spacecraft's signal having occurred 83 minutes earlier at Saturn, some 1.4 billion km from Earth. With the rocket propellant for manoeuvering the spacecraft fully expended as planned touring Saturn and i...
Fri, 15 Sep 2017 14:17:00 +0100
Four of the latest set of Galileo navigation satellites will be launched on Ariane 6 rockets - ESA's first contract to use Europe's new vehicle. The launches are scheduled between the end of 2020 and mid-2021, using two Ariane 62 rockets - the configuration of Europe's next-generation launch vehicle that is best suited to haul the two 750 kg navigation satellites into their orbits at 23 222 km altitude. Under development, Ariane 6 is Europe's newest launcher, designed to extend guaranteed ...
Fri, 15 Sep 2017 14:00:00 +0100
The Space Alliance, formed by Thales Alenia Space (Thales 67%, Leonardo 33%) and Telespazio (Leonardo 67%, Thales 33%), today signed a partnership with the US-based company Spaceflight Industries which includes the following elements: A minority investment in Spaceflight Industries, which through its BlackSky business, has developed a geospatial platform and plans to build and operate a constellation of 60 small high-resolution observation satellites featuring very short revisit times; ...
Tue, 12 Sep 2017 16:33:00 +0100
Lockheed Martin (LM) unveiled a new small unmanned aircraft system (UAS) that has been designed and developed in the UK at the Defence and Security Equipment International (DSEI). OUTRIDER is a lightweight, canister launched UAS that has been designed by engineers at Lockheed Martin UK's Havant facility in partnership with Wirth Research, an engineering company with specialisation in aerodynamics and composite materials. At only four inches wide and weighing only 1.7 kilograms, it is designed...
Mon, 11 Sep 2017 13:00:00 +0100
Orbital ATK, a global leader in aerospace and defense technologies, today announced significant progress on the industry's first commercial in-space satellite servicing system. The Mission Extension Vehicle-1 (MEV-1) spacecraft successfully completed its critical design review earlier this year and is now in production with about 75% of the platform and payload components already delivered to the company's Satellite Manufacturing Facility in Virginia. The spacecraft will begin system-level testi...
Mon, 11 Sep 2017 10:07:00 +0100
Boeing will design and build seven super-powered medium earth orbit (MEO) satellites for SES, delivering efficient high-performance data communications services to users around the world. The O3b mPOWER satellites will include Boeing's most-advanced digital payload technology and will be built using electronics from the flight-proven 702 satellite platform customized to support the unique MEO environment. "With this new technology and design, Boeing is able to build satellites faster and m...
Wed, 6 Sep 2017 16:31:00 +0100
EchoStar Corporation and Lockheed Martin announced today that the EchoStar III satellite has been successfully recovered following an anomaly that occurred in late July and retired per the FCC regulations. "After the initial loss of contact, with a joint effort by EchoStar and Lockheed Martin, a command and control link was reestablished and deorbit maneuvers performed" said Derek de Bastos, chief technology officer for EchoStar Satellite Services L.L.C. "EchoStar III is now safely in a grave...
Wed, 6 Sep 2017 15:24:00 +0100
Orbital ATK, a global leader in aerospace and defense technologies, recently completed an important qualification test of the avionics system for the solid rocket boosters the company has developed and is now manufacturing for NASA's Space Launch System (SLS). Completion of this milestone is an important step toward preparing the SLS and Orion spacecraft for their first flight in 2019. Two Orbital ATK-developed five-segment rocket boosters will be used on each SLS launch to help provide initial ...
Tue, 5 Sep 2017 14:07:00 +0100
Launch is the most strenuous part of a satellite's life. To survive the extreme sound wave pressure and pounding vibrations generated by more than 700,000 lbs. of thundering rocket thrust, spacecraft need a solid, reliable design if they hope to arrive operational on orbit. On July 13, Lockheed Martin (LMT)'s second, fully-assembled GPS III space vehicle (SV) completed a realistic simulation of its future launch experience and passed this critical acoustic environmental test with flying color...
Thu, 31 Aug 2017 14:39:00 +0100
Stevenage -  Europe’s pollution monitoring satellite Sentinel-5 Precursor has left Airbus’ Stevenage site and is on its way to the launch site, the Plesetsk Cosmodrome in Russia. Launch is currently planned on 9 October on a Rockot rocket. The journey that will last 5 days, will start with a flight to Moscow aboard an Antonov 124, followed by another flight to Archangelsk in the northwest of Russia. The last leg of the journey will be a train ride taking the satellite 200km south of Archange...
Wed, 30 Aug 2017 16:00:00 +0100
Star Storm, an explosive performance inspired by stellar processes in the Universe, will be premiered at the 2017 Ars Electronica Festival in Linz, Austria, on 10 September. The creator of the show is Aoife van Linden Tol, the recipient of the first art&science@ESA residency organised by Ars Electronica in partnership with ESA. A multimedia artist working primarily with explosive materials, Aoife spent six weeks at ESA's technical heart in the Netherlands to research her project. Durin...
Sat, 26 Aug 2017 09:35:00 +0100
Orbital ATK, a global leader in aerospace and defense technologies, announced its Minotaur IV space launch vehicle successfully launched and placed into orbit the U.S. Air Force's Operationally Responsive Space-5 (ORS-5) spacecraft on August 26, 2017. The Minotaur IV launched from Cape Canaveral Air Force Station's Space Launch Complex 46 (SLC-46), which is operated under license by Space Florida. This mission marks the 26th consecutive successful launch for the company's Minotaur product line. ...
Fri, 25 Aug 2017 08:37:00 +0100
Rockwell Collins recently delivered the latest generation of Digital GPS Anti-Jam Receiver (DIGAR) airborne anti-jam and anti-spoofing technology to the U.S. Air Force Special Operations Command (AFSOC). The enhanced solution provides unsurpassed airborne anti-jam capability with over 10,000 times improved jamming resistance over the previous model. "From advanced fifth-generation aircraft to ground and maritime applications, this receiver is the most reliable military-grade GPS solution avai...
Thu, 24 Aug 2017 22:00:00 +0100
Orbital ATK (NYSE: OA), a global leader in aerospace and defense technologies, today announced it is in final preparations to launch the company's Minotaur IV rocket from Cape Canaveral Air Force Station, Florida, on Friday, August 25, at approximately 11:15 p.m. EDT. The Minotaur IV will carry the U.S. Air Force's Operationally Responsive Space-5 (ORS-5) spacecraft, which will monitor satellites and space debris to aid the U.S. military's space situational awareness. Building on the Minotaur...
Thu, 24 Aug 2017 14:53:00 +0100
ESA astronauts Samantha Cristoforetti and Matthias Maurer joined 16 Chinese astronauts earlier this month for nine days of sea survival training off China's coastal city of Yantai. The ultimate goal is for ESA to establish a long term cooperation with China and ESA astronauts to fly on China's space station. Returning from space, astronauts need to be prepared for any eventuality - including landing in water. Sea survival is a staple of all training but this is the first time that other ast...
Wed, 23 Aug 2017 22:31:00 +0100
NASA has selected Jacobs Technology of Tullahoma, Tennessee, to provide a broad spectrum of engineering and scientific support services at Marshall Space Flight Center in Huntsville, Alabama and the Michoud Assembly Facility in New Orleans. The Engineering Services and Science Capability Augmentation (ESSCA) contract is a cost-plus-award-fee indefinite-delivery indefinite-quantity contract that has a potential period of performance of eight years. It is a follow-on effort to the ESSSA contrac...
Wed, 23 Aug 2017 17:52:00 +0100
The industry-funded Low Cost Terminal (LCT) was successfully tested this month with an on-orbit Advanced Extremely High Frequency (AEHF) satellite. This critical milestone demonstrates the ability of an affordable tactical terminal to connect with the DoD's most highly assured protected communications network. The industry development team is led by Northrop Grumman Corporation (NYSE: NOC) and Lockheed Martin (NYSE: LMT). The AEHF system, designed for both strategic and tactical users, enabl...
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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