author={Eyal Schwartz and Stephen Geoffrey Lipson and Erez N. Ribak},
  journal={The Astronomical Journal},
An Earth-like extrasolar planet emits light that is many orders of magnitude fainter than that of the parent star. We propose a method of identifying bio-signature spectral lines in light of known extrasolar planets based on Fourier spectroscopy in the infrared, using an off-center part of a Fourier interferogram only. This results in superior sensitivity to narrower molecular-type spectral bands, which are expected in the planet spectrum but are absent in the parent star. We support this idea… 

Revealing bio-lines of exoplanets by Fourier spectroscopy

Earth-like extra-solar planets have luminosities which are many orders of magnitude less than those of their parent star. We propose and test a method for identifying molecular spectral bands in

Revealing bio-lines of exoplanets by Fourier spectroscopy

Earth-like extra-solar planets have luminosities which are many orders of magnitude less than those of their parent star. We propose and test a method for identifying molecular spectral bands in

Improving identification of weak spectral lines in the presence of a strong continuum

Observing faint spectral signals from light sources in the presence of an overwhelming background is a common goal in many aspects of physics and astronomy. By using an optimized selected part of a

White light Sagnac interferometer—a common (path) tale of light

White or polychromatic light sources are vastly abundant in nature and lie in our most basic understanding of the theory of light, beginning from stars like our Sun and extending to every common

Sagnac effect in an off-center rotating ring frame of reference

Interference resides deeply in our understanding of the wave properties of light. In this paper, the century famous Sagnac effect is demonstrated to be independent of the rotation axis position,

Optical fiber interferometer array for scanless Fourier-transform spectroscopy.

The spectral resolution of the spatial heterodyne Fourier-transform spectrometer implemented with an array of optical fiber interferometers can be readily scaled up by incorporating longer optical fiber delays, providing a pathway toward surpassing current spectroscopy resolution limits.

The Exoplanet Handbook

1. Introduction 2. Radial velocities 3. Astrometry 4. Timing 5. Microlensing 6. Transits 7. Imaging 8. Host stars 9. Brown dwarfs and free-floating planets 10. Formation and evolution 11. Interiors

Stationary Fourier Transform Spectrometer

We developed a non-scanning and extremely stable Fourier Transform Infra-red Spectrometer, for detection of narrow atmospheric lines. We intend to use it to identify and measure molecules in our own



Extra-solar planets

The discovery of the first extra-solar planet surrounding a main-sequence star was announced in 1995, based on very precise radial velocity (Doppler) measurements. A total of 34 such planets were

The astrobiology habitability primer.

All exoplanetary bodies detected until about 2008, with a few uncertain exceptions, have clearly been gas giants like Jupiter or Neptune, though some have been found to be much larger (up to the brown dwarf limit).

An Introduction to Optical Stellar Interferometry

During the last two decades, optical stellar interferometry has become an important tool in astronomical investigations requiring spatial resolution well beyond that of traditional telescopes. This

Spectral Evolution of an Earth-like Planet

We have developed a characterization of the geological evolution of the Earth's atmosphere and surface in order to model the observable spectra of an Earth-like planet through its geological history.

Habitable zones around main sequence stars.

The results suggest that mid-to-early K stars should be considered along with G stars as optimal candidates in the search for extraterrestrial life.

IRTS Observations of the Mid-Infrared Spectrum of the Zodiacal Emission

Ozone concentrations and ultraviolet fluxes on Earth-like planets around other stars.

Coupled radiative-convective/photochemical modeling was performed for Earth-like planets orbiting different types of stars and found that advanced life is theoretically possible on high-O(2) planets around F stars, but it is not obvious that it would evolve as it did on Earth.

Observations of the Antarctic infrared sky spectral brightness

An important parameter that defines the effectiveness and efficiency of any optical or infrared sky survey is the atmospheric character of the observing site. Of prime importance is the sky spectral

Search for temporal coherence in the sky

  • E. Ribak
  • Physics
    SPIE Astronomical Telescopes + Instrumentation
  • 2006
A new observation mode, a survey of temporal coherence in large fields, is described. Longitudinal coherence can arise in many astrophysical scenarios and at different wave lengths, from plasma

WINDII, the wind imaging interferometer on the Upper Atmosphere Research Satellite

The WIND imaging interferometer (WINDII) was launched on the Upper Atmosphere Research Satellite (UARS) on September 12, 1991. This joint project, sponsored by the Canadian Space Agency and the