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GAIA astrometric mission of ESA will be very efficient in discovering binary and multiple stars with any orbital period, from minutes to millions of years. Main parameters of the revised mission design are presented. Next we estimate the…

Astrophysics · Physics 2007-05-23 Tomaz Zwitter , Ulisse Munari

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…

High Time Resolution Astrophysics (HTRA) concerns itself with observations on short scales normally defined as being lower than the conventional read-out time of a CCD. As such it is concerned with condensed objects such as neutron stars,…

X-ray polarimetry-timing is the characterization of rapid variability in the X-ray polarization degree and angle. As for the case of spectral-timing, it provides causal information valuable for reconstructing indirect maps of the vicinity…

High Energy Astrophysical Phenomena · Physics 2023-04-05 Adam Ingram

X-rays are a powerful probe of the physical conditions in the nuclei of active galaxies. We review the X-ray properties of radio-quiet AGN, LINERs and ultraluminous IR galaxies based on observations carried out with the X-ray satellite…

Astrophysics · Physics 2017-08-23 Stefanie Komossa

LOFT, the Large Observatory For X-ray Timing, is one of five ESA M3 candidate missions. It will address the Cosmic Vision theme: "Matter under Extreme Conditions". By coupling for the first time a huge collecting area for the detection of…

Instrumentation and Methods for Astrophysics · Physics 2015-06-18 E. Bozzo , L. Stella , M. van der Klis , A. Watts , D. Barret , J. Wilms , P. Uttley , J. W. den Herder , M. Feroci

I present an observational review of the five accretion-driven millisecond X-ray pulsars currently known, focusing on the results obtained with the Rossi X-ray Timing Explorer (RXTE) satellite. A prominent place in this review is given to…

Astrophysics · Physics 2009-11-10 Rudy Wijnands

AGILE is a small gamma-ray astronomy satellite, with good spatial resolution, excellent timing capabilities and an unprecedented large field of view (~1/5 of the sky). It will be the next mission dedicated to high energy astrophysics in the…

Astrophysics · Physics 2007-05-23 A. Pellizzoni , A. Chen , M. Conti , A. Giuliani , S. Mereghetti , M. Tavani , S. Vercellone

At present, there is a great worldwide interest in the development of technologies that allow information about the X-ray emission from pulsating cosmic sources to be used to obtain navigation solutions for deep-space spacecraft. In this…

High Energy Astrophysical Phenomena · Physics 2015-07-15 M. G. Revnivtsev , O. E. Gadzhily , A. A. Lutovinov , S. V. Molkov , V. A. Arefiev , M. N. Pavlinsky , A. G. Tuchin

The success of the SWIFT/BAT and INTEGRAL missions has definitely opened a new window for follow-up and deep study of the transient gamma-ray sky. This now appears as the access key to important progresses in the area of cosmological…

In astronomy there are basically four kinds of observations to extract the information carried by electromagnetic radiation: photometry, imaging, spectroscopy and polarimetry. By optimal exploitation of the first three techniques, X-ray…

A non-proprietary Mission Concept available for presentation to NASA, providing High Area, High Resolution Imaging Spectroscopy and Timing with Arcmin Angular Resolution Submitted in response to NASA 2011 RFI NNH11ZDA018L 'Concepts for the…

A pulse timing orbit has been obtained for the X-ray binary XTE J1855-026 using observations made with the Proportional Counter Array on board the Rossi X-ray Timing Explorer. The mass function obtained of ~16Mo together with the detection…

Astrophysics · Physics 2009-11-07 Robin H. D. Corbet , Koji Mukai

By the precise timing of the low amplitude (0.005 - 0.02 magnitude) transits of exoplanets around their parent star it should be possible to infer the presence of other planetary bodies in the system down to Earth-like masses. We describe…

Astrophysics · Physics 2008-09-22 I. A. Steele , S. D. Bates , N. Gibson , F. Keenan , J. Meaburn , C. J. Mottram , D. Pollacco , I. Todd

X-ray astronomy is our gateway to the hot universe. More than half of the baryons in the cosmos are too hot to be visible at shorter wavelengths. Studying the extreme environments of black hole and neutron star vicinities also requires…

Instrumentation and Methods for Astrophysics · Physics 2017-08-23 P. Gandhi , N. Degenaar , C. Done , M. G. Watson

The study of the hard (E>10 keV) energy spectra of X-ray binary pulsars can give a wealth of information on the physical processes that occur close to the neutron star surface. Extreme matter regimes are probed, and precious information on…

Astrophysics · Physics 2007-05-23 Mauro Orlandini

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…

High Energy Astrophysical Phenomena · Physics 2021-06-23 J. S. Yadav , P. C. Agrawal , Ranjeev Misra , Jayashree Roy , Mayukh Pahari , R. K. Manchanda

Results from recent multiwavelength observations of blazars are reviewed, with particular emphasis on those involving the Rossi X-ray Timing Explorer (RXTE). I discuss blazars' spectral energy distributions, their correlated variability at…

Astrophysics · Physics 2007-05-23 Rita M. Sambruna
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