World space observatory-ultraviolet among UV missions of the coming years

Шустов, Б. М.; Sachkov, Mikhail; Castro, Ana Inés Gómez de; Werner, K.; Kappelmann, N.; Moisheev, A. A.

doi:10.1007/s10509-011-0737-3

Cited by 45 publications

(14 citation statements)

References 30 publications

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“…T eff = 100,000 K, R = 0.04 R ) out to ∼20 kpc, and the scarce halo sample currently known may be improved. Large, more unbiased statistical samples provide tests for stellar evolution theories, and a timely pool of targets for follow-up spectroscopy with upcoming capabilities such as WSO (Shustov et al 2011) and UVIT, and current HST spectrographs.…”

Section: Summary and Future Directionsmentioning

confidence: 99%

New advances in the field of planetary nebulae from ultraviolet observations

Bianchi¹

2011

Proc. IAU

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Abstract. The ultraviolet (UV) domain, in particular shortwards of Lyα, provides unique information to unravel the physical parameters of Central Stars of Planetary Nebulae (CSPNe) and the paths for this elusive final stage of stellar evolution, thanks to a wealth of diagnostic transitions from ionic species not observable at other wavelengths. Intermediate mass stars are the major providers of important elements like C and N. Understanding how they shed most of their initial mass is critical for understanding the chemical enrichment of the ISM. Mass-loss diagnostic lines abound at UV wavelengths, and when the CSPN reaches the hottest T eff before turning on the WD-cooling sequence, and the wind fades, the last wind lines to disappear are found in the far-UV, as well as diagnostic lines for elements such as Ne. This domain also offers a host of H 2 transitions, tracing the circum-stellar material expelled in previous phases. UV images and spectra of PNe add critical constraints to their ionization structure and to some abundances. Finally, the recent GALEX sky surveys in two UV bands afforded the first unbiased census of hot white dwarfs (WD) and post-AGB objects in the Milky Way, significantly expanding known catalogs and providing statistical constraints to the initial-final mass relation.

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Section: Summary and Future Directionsmentioning

confidence: 99%

New advances in the field of planetary nebulae from ultraviolet observations

Bianchi¹

2011

Proc. IAU

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“…The magnetic fields at the surfaces of the white dwarfs in magnetic cataclysmic variables reach values of 10 4 −10 8 G. Simple estimates show that the corresponding magnetic moment of the white dwarf in a magnetic cataclysmic variable and a neutron star in an X-ray binary are roughly the same, of order 10 30 G cm 3 . This indicates that the magnetosphere radii for these white dwarfs and neutron stars are roughly equal.…”

Section: Magnetic Cataclysmic Variablesmentioning

confidence: 94%

“…The goal of the Spektr-UV project is to construct a space observatory intended for observations in the near and far UV (115-310 nm). The development of the project is described in [17]. It's main characteristics and a discussion of the scientific program of the Spektr-UV program can be found in [17][18][19][20].…”

Section: Spektr-uv (World Spacementioning

confidence: 99%

“…The history of early stages in the development of UV astronomy is described in the review [1], the history of UV spectroscopy in [2], the current status of UV techniques for astronomy and perspectives for the future in [3,4], as well as Chapter 4 of "Fundamental Space Research, Volume 1: Astrophysics" [5], written by B.M. Shustov. In recent years, new views have arise of both the topical nature of scientific problems in UV astronomy and promising technologies for UV observations carried out in space.…”

Section: Introductionmentioning

confidence: 99%

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Scientific problems addressed by the Spektr-UV space project (world space Observatory—Ultraviolet)

et al. 2016

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Abstract-The article presents a review of scientific problems and methods of ultraviolet astronomy, focusing on perspective scientific problems (directions) whose solution requires UV space observatories. These include reionization and the history of star formation in the Universe, searches for dark baryonic matter, physical and chemical processes in the interstellar medium and protoplanetary disks, the physics of accretion and outflows in astrophysical objects, from Active Galactic Nuclei to close binary stars, stellar activity (for both low-mass and high-mass stars), and processes occurring in the atmospheres of both planets in the solar system and exoplanets. Technological progress in UV astronomy achieved in recent years is also considered. The well advanced, international, Russian-led Spektr-UV (World Space Observatory-Ultraviolet) project is described in more detail. This project is directed at creating a major space observatory operational in the ultraviolet (115-310 nm). This observatory will provide an effective, and possibly the only, powerful means of observing in this spectral range over the next ten years, and will be an powerful tool for resolving many topical scientific problems.

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“…Despite the fact that interesting and unique science may come through observations in the UV domain, this area remains largely unexplored (Shustov et al, 2011). Though large space observatories provide strong and important science outcome, they are also extremely expensive, and can only be afforded by governmental agencies.…”

Section: Introductionmentioning

confidence: 99%

Prospect for UV observations from the Moon. II. Instrumental design of an ultraviolet imager LUCI

Mathew

Prakash

Sarpotdar

et al. 2017

Astrophys Space Sci

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We present a design for a near-ultraviolet (NUV) imaging instrument which may be flown on a range of available platforms, including high-altitude balloons, nanosatellites, or space missions. Although all current UV space missions adopt a Ritchey-Chretain telescope design, this requires aspheric optics, making the optical system complex, expensive and challenging for manufacturing and alignment. An all-spherical configuration is a cost-effective and simple solution. We have aimed for a small payload which may be launched by different platforms and we have designed a compact, light-weight payload which will withstand all launch loads. No other UV payloads have been previously reported with an all-spherical optical design for imaging in the NUV domain and a weight below 2 kg. Our main science goal is focussed on bright UV sources not accessible by the more sensitive large space UV missions.Here we discuss various aspects of design and development of the complete instrument, the structural and finite-element analysis of the system performed to ensure that the payload withstands launch-load stresses and vibrations. We expect to fly this telescope -Lunar Ultraviolet Cosmic Imager (LUCI) -on a spacecraft to the Moon as part of the Indian entry into Google XPrize competition. Observations from the Moon provide a unique opportunity to observe the sky from a stable Joice Mathew · Ajin Prakash · Mayuresh Sarpotdar · A.G. Sreejith · Nirmal K. · S. Ambily · Margarita Safonova · Jayant Murthy Indian Institute of Astrophysics, Koramangala 2nd block, Bangalore, 560034, India E-mail: joice@iiap.res.in Noah BroschThe Wise Observatory and the Dept. Of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel platform far above the Earth's atmosphere. However, we will explore other opportunities as well, and will fly this telescope on a high-altitude balloon later this year.

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World space observatory-ultraviolet among UV missions of the coming years

Cited by 45 publications

References 30 publications

New advances in the field of planetary nebulae from ultraviolet observations

New advances in the field of planetary nebulae from ultraviolet observations

Scientific problems addressed by the Spektr-UV space project (world space Observatory—Ultraviolet)

Prospect for UV observations from the Moon. II. Instrumental design of an ultraviolet imager LUCI

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