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The Black Hole Explorer (BHEX) mission extends the submillimeter Very-Long-Baseline Interferometry (VLBI) to space. The preliminary baseline design of a shaped axial-symmetric displaced-axis dual-reflector antenna for the BHEX is presented.…

天体物理仪器与方法 · 物理学 2025-04-29 Robert Lehmensiek , Tirupati Kumara Sridharan

The World Space Observatory/Ultraviolet (WSO/UV) represents a new mission implementation model for large space missions for astrophysics. The process has been brought up to enable, fully scientific needs driven, a logic to be applied to the…

科普物理 · 物理学 2009-11-10 W. Wamsteker , H. J. Haubold

A next-generation medium-energy (100 keV to 100 MeV) gamma-ray observatory will greatly enhance the identification and characterization of multimessenger sources in the coming decade. Coupling gamma-ray spectroscopy, imaging, and…

A fraction of the active supermassive black holes at the centers of galaxies in our Universe are capable of launching extreme kiloparsec-long relativistic jets. These jets are known multiband (radio to $\gamma$-ray) and multimessenger…

COBRAS/SAMBA is a second generation satelitte dedicated to mapping at high resolution and sensitivity the anisotropies of the Cosmic Microwave Background (CMB). This mission is in the assessment study phase (A) at ESA, with a decision…

天体物理学 · 物理学 2007-05-23 François R. Bouchet , Richard Gispert , Jean-Lou Puget

The operation of satellites in very low Earth orbit (VLEO) has been linked to a variety of benefits to both the spacecraft platform and mission design. Critically, for Earth observation (EO) missions a reduction in altitude can enable…

In these proceedings we describe the WEAVE-QSO survey, which will observe around 400,000 high redshift quasars starting in 2018. This survey is part of a broader WEAVE survey to be conducted at the 4.2m William Herschel Telescope. We will…

The goal of the Medium Energy Gamma-ray Astronomy (MEGA) telescope is to improve sensitivity at medium gamma-ray energies (0.4-50 MeV) by at least an order of magnitude over that of COMPTEL. This will be achieved with a new compact design…

天体物理学 · 物理学 2019-08-14 P. F. Bloser , R. Andritschke , G. Kanbach , V. Schoenfelder , F. Schopper , A. Zoglauer

The survey speed of ASKAP makes it a prime instrument with which to survey the HI universe, enabling it to carry out both wide surveys of the entire sky, as well as deep surveys covering cosmologically representative volumes. Here, the use…

宇宙学与河外天体物理 · 物理学 2009-12-14 Martin Meyer

Future strategic X-ray astronomy missions will require unprecedentedly sensitive wide-field imagers providing high frame rates, low readout noise and excellent soft energy response. To meet these needs, our team is employing a multi-pronged…

Using the semi-analytic model Serotina, we investigate the cosmic spin evolution of supermassive black holes incorporating recent results from general relativistic magnetohydrodynamics simulations of spin-down from relativistic jets. We…

高能天体物理现象 · 物理学 2024-10-11 Angelo Ricarte , Priyamvada Natarajan , Ramesh Narayan , Daniel C. M. Palumbo

The proposed SuperNova/Acceleration Probe (SNAP) mission will have a two-meter class telescope delivering diffraction-limited images to an instrumented 0.7 square-degree field sensitive in the visible and near-infrared wavelength regime. We…

天体物理学 · 物理学 2019-08-14 M. Lampton , C. J. Bebek

The satellite galaxies of the Milky Way (MW) define a vast polar structure (VPOS), a thin plane perpendicular to the MW disc. Proper motion (PM) measurements are now available for all of the 11 brightest, `classical' satellites and allow an…

宇宙学与河外天体物理 · 物理学 2015-06-17 Marcel S. Pawlowski , Pavel Kroupa

Future generation wireless networks are targeting the convergence of fixed, mobile and broadcasting systems with the integration of satellite and terrestrial systems towards utilizing their mutual benefits. Satellite Communications (Sat-…

信号处理 · 电气工程与系统科学 2020-09-08 Shree Krishna Sharma , Jorge Querol , Nicola Maturo , Symeon Chatzinotas , Bjorn Ottersten

A complete sample of bright ROSAT sources with hard XRB-like spectra in the Galactic Plane (|b| < 15 deg.) has been tentatively identified with radio sources in the GB6/PMN/NVSS surveys, and subsequently observed with the Australia…

天体物理学 · 物理学 2007-05-23 G. S. Tsarevsky , E. P. Pavlenko , R. A. Stathakis , N. S. Kardashev , O. B. Slee

I present the science goals and give a brief summary of the Wide Angle X-ray survey with a Wide Field X-ray Telescope (WAXS/WFXT) mission proposal (Phase A) which will be submitted to the Italian Space Agency (ASI) following the call for…

天体物理学 · 物理学 2007-05-23 Guido Chincarini

With its large effective area at hard X-rays, high time resolution and having co-aligned other instruments, AstroSat/LAXPC was designed to usher in a new era in rapid variability studies and wide spectral band measurements of the X-ray…

高能天体物理现象 · 物理学 2021-06-23 J. S. Yadav , P. C. Agrawal , Ranjeev Misra , Jayashree Roy , Mayukh Pahari , R. K. Manchanda

A dual band receiver has been designed for the Black Hole Explorer (BHEX) mission, which is a space Very-Long Baseline Interferometry (VLBI) mission concept, aimed at unveiling the photon ring of black holes. The cryogenic receiver…

With the launch of ESA's INTEGRAL satellite in october 2002, a gamma-ray observatory will be placed in orbit providing a multiwavelength coverage from a few keV up to 10 MeV for the study of high energy phenomena in the universe. Among the…

天体物理学 · 物理学 2007-05-23 Jurgen Knodlseder