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Optical design of diffraction-limited x-ray telescopes [PDF]

Applied Optics, 2020
Astronomical imaging with micro-arcsecond (µas) angular resolution could enable breakthrough scientific discoveries. Previously proposed µas x-ray imager designs have been interferometers with limited effective collecting area. Here we describe x-ray telescopes achieving diffraction-limited performance over a wide energy band with large effective area,
Mark L Schattenburg, Ralf K Heilmann, Brandon David Chalifoux   +2 more
exaly   +4 more sources

Emerging Techniques in Minimally Invasive Surgery in Hematologic Malignancies. [PDF]

Eur J Haematol
ABSTRACT Hematologic malignancies represent the most common cancers in children. While the mainstays of treatment are chemotherapy and potentially hematopoietic stem cell transplant, minimally invasive surgery (MIS) has a role in the diagnosis and management of complications related both to disease and therapy as well as common pediatric surgical ...
Chara A, McKay KG, Lovvorn HN, Fusco JC.
europepmc   +2 more sources

Characterization of a lobster-eye type X-ray telescope [PDF]

EPJ Web of Conferences, 2022
Lobster-eye type X-ray telescopes use reflecting plano mirrors under grazing incidence and can observe a large field of view. As part of a Bavarian-Czech cooperation, two telescopes were build, equipped with mirrors coated with gold and iridium.
Döhring Thorsten, Stieglitz Veronika, Hudec Rene, Sapsai Iryna, Friedrich Peter, Burwitz Vadim   +5 more
doaj   +1 more source

Simulation of a Simple Wolter Telescope of Type I by Geant4 for Some Widely Used Materials [PDF]

Iranian Journal of Astronomy and Astrophysics, 2020
At the present work, the reflection of X-rays from surfaces composed of silicon, gold, iridium, and nickel is simulated in the range of E ≤ 5 keV energy for the two cases, which includes raw mirror surfaces and a typical Wolter-I optics-based X-ray ...
Mehdi Abbasian Motlagh, Gohar Rastegarzadeh   +1 more
doaj   +1 more source

The Swift X-Ray Telescope

Space Science Reviews, 2005
The Swift Gamma-Ray Explorer is designed to make prompt multiwavelength observations of Gamma-Ray Bursts (GRBs) and GRB afterglows. The X-ray Telescope (XRT) enables Swift to determine GRB positions with a few arcseconds accuracy within 100 seconds of the burst onset.
Burrows, D. N., Hill, J. E., Nousek, J. A., Kennea, J. A., Wells, A., Osborne, J. P., Abbey, A. F., Beardmore, A., Mukerjee, K., Short, A. D. T., Chincarini, G., Campana, S., Citterio, O., Moretti, A., Pagani, C., Tagliaferri, G., Giommi, P., Capalbi, M., Tamburelli, F., Angelini, L., Cusumano, G., Brauninger, H. W., Burkert, W., Hartner, G. D.   +23 more
  +8 more sources

Design and testing of a Kirkpatrick-Baez optics variation [PDF]

EPJ Web of Conferences, 2022
Beside Wolter I X-ray optics, which are used at most in currently operating X-ray space telescopes, there exist also other optical designs and their usability for space observations is still the matter of studies.
Stieglitz Veronika, Burwitz Vadim, Doehring Thorsten, Hudec Rene, Vitek Stanislav   +4 more
doaj   +1 more source

Target Detection Framework for Lobster Eye X-Ray Telescopes with Machine-learning Algorithms

The Astrophysical Journal Supplement Series, 2023
Lobster eye telescopes are ideal monitors to detect X-ray transients because they could observe celestial objects over a wide field of view in the X-ray band.
Peng Jia, Wenbo Liu, Yuan Liu, Haiwu Pan
doaj   +1 more source

VTXO: the virtual telescope for x-ray observations [PDF]

Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, 2020
5 pages, 4 figures, submitted to the Proceedings of the 34th Annual Small Satellite Conference (SmallSat 2020)
Krizmanic, John, Shah, Neerav, Harding, Alice, Calhoun, Phil, Purves, Lloyd, Webster, Cassandra, Stochaj, Steven, Rankin, Kyle, Smith, Daniel, Park, Hyeongjun, Boucheron, Laura, Kota, Krishna, Corcoran, Michael, Shrader, Chris, Naseri, Asal   +14 more
openaire   +3 more sources

The X-Ray Telescope onboard Suzaku [PDF]

Publications of the Astronomical Society of Japan, 2007
Abstract We present the design parameters, production process, and in-flight performance of the X-ray telescope (XRT) onboard Suzaku. The imaging capability is significantly improved over the ASCA XRT, which had half-power diameters of ${3\rlap {.}{}^{\mathrm {\prime }}6}$, to ${1\rlap {.}{}^{\mathrm {\prime }}8}$–${2\rlap {.}{}^{\mathrm
Serlemitsos, P., Soong, Y., Chan, K., Okajima, T., Lehan, J., Maeda, Y., Itoh, K., Mori, H., Iizuka, R., Itoh, A., Inoue, H., Okada, S., Yokoyama, Y., Itoh, Y., Ebara, M., Nakamura, R., Suzuki, K., Ishida, M., Hayakawa, A., Inoue, C., Okuma, S., Kubota, R., Suzuki, M., Osawa, T., Yamashita, K., Kunieda, H., Tawara, Y., Ogasaka, Y., Furuzawa, A., Tamura, K., Shibata, R., Haba, Y., Naitou, M., Misaki, K.   +33 more
openaire   +2 more sources

The Cycles of Alpha Centauri: Double Dipping of AB

The Astronomical Journal, 2023
In mid-2023, the Sunlike dwarfs of nearby α Centauri (HD 128620 (“A”): G2 V; HD 128621 (“B”): K1 V; hereafter “AB”) coincidentally both entered coronal ( T ≈ 1–3 MK) low states in their long-term X-ray cycles, as captured by the Chandra Observatory and ...
Thomas Ayres
doaj   +1 more source