Cosmic Dawn Intensity Mapper
(CDIM)
(NASA concept for space telescope for intensity mapping)
The Cosmic Dawn Intensity Mapper (CDIM) is a concept for an
NASA 83-cm space near infrared telescope for
intensity mapping Lyman alpha and H-alpha out to
z = 10.
It would also map other spectral lines (H-beta, [N II], [O III])
to help distinguish them from the two lines of interest, as well
as for their own benefit.
The concept is similar to SPHEREx, with a similar
wavelength-range and similar use of linearly variable filters (as
opposed to a typical spectroscope), but CDIM has better
spectral resolution and angular resolution, and rather
than all-sky, it would use smaller survey fields,
a deep survey of 15 square degrees, a medium survey
of 30 square degrees and a wide survey of 300 square degrees.
(spacecraft,telescope,intensity mapping,concept,NASA)
Further reading:
https://cor.gsfc.nasa.gov/studies/probe-study/documents/Cooray-CosmicDawn.pdf
https://www.hou.usra.edu/meetings/landscape2019/eposter/5054.pdf
https://ui.adsabs.harvard.edu/abs/2019BAAS...51g..23C/abstract
https://arxiv.org/abs/1602.05178
WaveL | Freq | Photon Energy | | |
0.75μm | 400THz | 1.7eV | begin | Cosmic Dawn Intensity Mapper |
7.5μm | 40THz | 165meV | end | Cosmic Dawn Intensity Mapper |
|
Index