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gLISA: geosynchronous laser interferometer space antenna concepts with off-the-shelf satellites
M Tinto1, D DeBra2, S Buchman2
1Jet Propulsion Laboratory, California Institute of Technology, MS. 238-737, 4800 Oak Grove Drive, Pasadena, California 91109, USA.
The Review of Scientific Instruments
|February 2, 2015
Summary
Two new geosynchronous gravitational wave (GW) mission concepts, gLISA, are proposed. These missions leverage commercial satellites and cost reductions for lower-cost gravitational wave detection.
Area of Science:
- Astronomy
- Astrophysics
- Gravitational Wave Detection
Background:
- Previous gravitational wave missions were envisioned with high costs.
- Recent aerospace advancements offer potential for cost reduction in space missions.
Purpose of the Study:
- To present two geosynchronous gravitational wave mission concepts (gLISA).
- To propose a novel drag-free system for enhanced stability.
- To explore lower-cost gravitational wave detection strategies.
Main Methods:
- Discussing two mission concepts: one utilizing commercial geostationary satellites, the other a dedicated geosynchronous mission.
- Introducing a "two-stage" drag-free system incorporating the Modular Gravitational Reference Sensor.
- Analyzing technical and programmatic challenges and cost-effectiveness.
Main Results:
- Two viable geosynchronous gravitational wave mission concepts (gLISA) are presented.
- A new "two-stage" drag-free system is proposed, avoiding μN thrusters.
- Both concepts offer significantly lower costs compared to previous missions.
Conclusions:
- Geosynchronous gravitational wave missions are feasible at reduced costs.
- The proposed "two-stage" drag-free system is key to mission success.
- Further detailed mission analysis will be conducted.
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