The INTEGRAL mission

Winkler, Christoph; Courvoisier, T. J. L.; Cocco, G. Di; Gehrels, N.; Giménez, Á.; Гребенев, С. А.; Hermsen, W.; Mas-Hesse, J. M.; Lebrun, F.; Lund, N.; Palumbo, G. G. C.; Paul, J.; Roques, J. P.; Schnopper, H. W.; Schönfelder, V.; Sunyaev, R.; Teegarden, B. J.; Ubertini, P.; Védrenne, G.; Dean, A. J.

doi:10.1051/0004-6361:20031288

Cited by 1,204 publications

(898 citation statements)

References 8 publications

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“…In the latter case, any accompanying radioactive decay emission will depend on ejecta mass and ejecta velocity for a given white dwarf mass (Hernanz et al 2002), which can be different for each subsequent outburst. Previous observations of emission up to 70 keV with Suzaku (Takei et al 2009) and the likely ∼0.1 MeV Compton/ OSSE detection of V382 Vel 1999 (Cheung et al 2015c) suggest extended timescale emission in classical novae and should motivate continuum emission searches with INTEGRAL (Winkler et al 2003) and ASTRO-H (Takahashi et al 2012;Coppi et al 2014) at later times than so far considered for the nuclear decay emission.…”

Section: Discussionmentioning

confidence: 81%

Fermi-Lat Gamma-Ray Detections of Classical Novae V1369 Centauri 2013 and V5668 Sagittarii 2015

Cheung

Jean

Shore

et al. 2016

ApJ

108

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We report the Fermi Large Area Telescope (LAT) detections of high-energy (>100 MeV) γ-ray emission from two recent optically bright classical novae, V1369 Centauri 2013 and V5668 Sagittarii 2015. At early times, Fermi target-of-opportunity observations prompted by their optical discoveries provided enhanced LAT exposure that enabled the detections of γ-ray onsets beginning ∼2 days after their first optical peaks. Significant γ-ray emission was found extending to 39-55 days after their initial LAT detections, with systematically fainter and longerduration emission compared to previous γ-ray-detected classical novae. These novae were distinguished by multiple bright optical peaks that encompassed the time spans of the observed γ-rays. The γ-ray light curves and spectra of the two novae are presented along with representative hadronic and leptonic models, and comparisons with other novae detected by the LAT are discussed.

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Section: Discussionmentioning

confidence: 81%

Fermi-Lat Gamma-Ray Detections of Classical Novae V1369 Centauri 2013 and V5668 Sagittarii 2015

Cheung

Jean

Shore

et al. 2016

ApJ

108

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“…The INTErnational Gamma-Ray Astrophysics Laboratory (INTEGRAL; Winkler et al 2003) is ESA's currently operational hard X-ray/soft gamma-ray space telescope. For the study of AXPs the low-energy detector of IBIS, called IS-GRI (20-300 keV, Lebrun et al 2003), has proven itself to be of great importance.…”

Section: Hard X-rays: Integralmentioning

confidence: 99%

The first multi-wavelength campaign of AXP 4U 0142+61 from radio to hard X-rays

Hartog

Kuiper

Hermsen

et al. 2007

Astrophys Space Sci

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For the first time a quasi-simultaneous multiwavelength campaign has been performed on an Anomalous X-ray Pulsar from the radio to the hard X-ray band. 4U 0142+61 was an INTEGRAL target for 1 Ms in July 2005. During these observations it was also observed in the X-ray band with Swift and RXTE, in the optical and NIR with Gemini North and in the radio with the WSRT. In this paper we present the source-energy distribution. The spectral results obtained in the individual wave bands do not connect smoothly; apparently components of different origin contribute to the total spectrum. Remarkable is that the INTEGRAL hard X-ray spectrum (power-law index 0.79 ± 0.10) is now measured up to an energy of ∼230 keV with no indication of a spectral break. Extrapolation of the INTEGRAL power-law spectrum to lower energies passes orders of magnitude underneath the NIR and optical fluxes,

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“…Now a number of surveys at energies higher than 10 keV are available to study this class of objects. The surveys performed by IBIS (Ubertini et al 2003) on board INTEGRAL (Winkler et al 2003), together with those of BAT, provide the best sample of Article published by EDP Sciences objects selected in the soft gamma-ray band to date (Bird et al 2007;Krivonos et al 2007). IBIS and BAT work in similar spectral bands, but concentrate on different parts of the sky: IBIS maps mainly the Galactic plane, while BAT focuses on observations at high Galactic latitudes.…”

Section: Introductionmentioning

confidence: 99%

Accurate classification of 17 AGNs detected with Swift/BAT

Parisi

Masetti²,

Jiménez‐Bailón

et al. 2009

A&A

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Through an optical campaign performed at 5 telescopes located in the northern and the southern hemispheres, plus archival data from two on line sky surveys, we have obtained optical spectroscopy for 17 counterparts of suspected or poorly studied hard X-ray emitting active galactic nuclei (AGNs) detected with Swift/BAT in order to determine or better classify their nature. We find that 7 sources of our sample are type 1 AGNs, 9 are type 2 AGNs, and 1 object is an X-ray bright optically normal galaxy; the redshifts of these objects lie in a range between 0.012 and 0.286. For all these sources, X-ray data analysis was also performed to estimate their absorption column and to search for possible Compton thick candidates. Among our type 2 objects, we did not find any clear Compton thick AGN, but at least 6 out of 9 of them are highly absorbed (N H > 10 23 cm −2 ), while one does not require intrinsic absorption; i.e., it appears to be a naked Seyfert 2 galaxy.

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The INTEGRAL mission

Cited by 1,204 publications

References 8 publications

Fermi-Lat Gamma-Ray Detections of Classical Novae V1369 Centauri 2013 and V5668 Sagittarii 2015

Fermi-Lat Gamma-Ray Detections of Classical Novae V1369 Centauri 2013 and V5668 Sagittarii 2015

The first multi-wavelength campaign of AXP 4U 0142+61 from radio to hard X-rays

Accurate classification of 17 AGNs detected with Swift/BAT

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