cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.57780/esa-ip0v6y6
title: 1470010

description: The new  X-ray transient MAXI J1535-571 was discovered by MAXI/GSC at 23:55 UT on September 02 and localised in the direction of the Galactic plane (ATEL #10699). Almost simultaneously the Swift/BAT trigger observed X-ray activity at a position coincident with the localisation of the MAXI/GSC detected transient confirming the discovery of a new Galactic Transient.The field around MAXI J1535-571 was observed on September 3 with the 0.61m B and C Telescope at Mt. John Observatory New Zealand (ATEL #10702). One target was found inside the Swift/XRT error circle in the i-band image at magnitude 21.8 +- 0.2. The detection in the i-band images suggests this source is variable not only in X-rays but also at optical/infra-red wavelengths. Although the nature of this source is still uncertain combining this result with the detections from the Swift MAXI together with the location in the Galactic plane strongly suggests that MAXI J1535-571 is a compact interacting binary possibly a new low mass x-ray binary.No X-ray bursts or coherent X-ray pulsations (up to ~290 Hz) were detected yet on Swift data.The observed X-ray spectral shape (a power law with index 1.5(1)) and the X-ray flux (few x 10^-9 erg/s/cm2) of the source are compatible with accreting millisecond pulsars or a black-hole in outburst. Here we suggest to follow-up this bright transient within an entire INTEGRAL revolution (roughly) in order to: - have the possibility of detecting type-I X-ray bursts with JEM-X - possibly detect pulsations in a energy band not covered by NuSTAR but with IBIS/ISGRI (up to several 100 keV) measuring also the dependence in energy of the pulsed fraction- measure the broad-band spectrum of a possible BHC up to several 100 keV and determine the emission state in an energy band not covered by other facilities (exploiting the uniquely large band p [truncated! Please see actual data for full text]
DOI: 10.57780/esa-is1m1g9
title: 1270002

description: TOO on BHC V404 Cyg in outburst
DOI: 10.57780/esa-ix98v66
title: 0520048

description: Observations of the X-ray background strongly suggest that there should be a large number of highly obscured AGN inthe local Universe. However the exact number and space density of these objects remains unconstrained. These AGNare detectable by INTEGRAL. We propose to extend our observations in the XMM-LSS field and thus obtain the deepestINTEGRAL observations of an extragalactic field performed in this energy range so far which will provide a completeview of the highly obscured AGN population in the local Universe. The proposed 2 Msec observations of the XMM-LSSfield will double the expected exposure time on the field to 4 Msec thus allowing us to find ~15 extragalactic sources.These observations will significantly increase the number of AGN found in a sample selected at 20--40 keV bysampling this population to fainter fluxes. This will increase the resolved fraction of the background at these highenergies and additionally will allow us to perform more detailed spectral fitting on the brightest sources such asinvestigating the presence of a high-energy cut-off in the AGN spectra in the brightest sources as well as in the stackedspectrum of all detected AGN. These data will stand as a legacy of INTEGRAL as the deepest extragalactic softgamma-ray survey of the sky for at least the next decade. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-iy298ia
title: 0320044

description: Thanks to the BeppoSAX satellite unprecedentedly wide  energy band extending up to 200 keV with the PDS instrument our knowledge of the spectra of blazars has improved substantially. However the results were limited by the PDS lack of imaging capabilities.In a number of blazars the PDS detected strong excesses in the 20-100 keV band with respect to the extrapolation from softer X-ray energies (0.5-10 keV). This implies either a new spectral component or a contaminating source that falls into the field of view of the PDS. We expect that the contaminant sources are mostly known objects that have a yet undiscovered bright emission in the hard X-ray band.With its spatial resolution in the 20-100 keV band INTEGRAL has the unique capability of disentangling the problem. If the excess is due to the blazar we will provide new input to our knowledge of the physics of this class of sources. If instead there is a serendipitous contaminating source we will be able to probe the still poorly studied 20-100 keV region and make significant progress in the understanding of the hard X-ray background.  [truncated! Please see actual data for full text]
DOI: 10.57780/esa-iyqb4on
title: 0299836

description: Galactic Plane Survey for AO 02 and Pattern 36
DOI: 10.57780/esa-iyxje1z
title: 1470005

description: Coordinated observations of GX 301-2 with HXMT. In outburst GX 301-2 is bright. Peak is expected aroubnd August 4. It has an Fe line and a cyclotron line around 35 keV. Contemporary energy spectrum with INTEGRAL is necessary for HXMT calibrations. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-iz3jmuy
title: 0320058

description: We propose a sensitive INTEGRAL ToO observation as part of a multifrequency campaign on the prominent gray blazar 3C279 during a flux high-state in the optical bandin order to measure 1) its high-state multifrequency spectrum  2) its X- and hard X-ray spectrum up to a about 200 keV  and3) its variability behaviour at hard X-rays.The proposed INTEGRAL observation will increase our knowledge on the largely unknownhard X-ray properties of 3C 279. The comparison of the newly measuredhigh-state to the already observed low-state multifrequency spectrumwill reveal new insights in its overall emission scenario.Because the observed radiation of 3C 279 is almost purely of non-thermal origin we are studying jet physics and subsequently the physics of particle acceleration by the proposed observation.       [truncated! Please see actual data for full text]
DOI: 10.57780/esa-j0lzgh3
title: 0620029

description: We propose to conduct 	extbf{fixed-time} uninterrupted observations (163+235=398 ks) of the galactic microquasar SS433 in the primary orbital eclipse immediately after the face-on disk precessional phase of the source in September 2008}. The main goal is to obtain hard X-ray spectroscopy of the egress from the primary orbital eclipse and to study its highly variable form. The phase-resolved spectroscopy is crucial to study the structure and physical parameters of a 20 keV rarefied corona at the center of the supercritical accretion disk in SS433 discoverd in  previous INTEGRAL observations. The form of the eclipse is also needed to constrain binary mass ratio in this system which is still controversial.  The proposal is not associated with the AO-6 Key Programs. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-j1atzfa
title: 0299828

description: Galactic Plane Survey for AO 02 and Pattern 28
DOI: 10.57780/esa-j2revk9
title: 0220141

description: We propose to observe pulsar PSR B1509-58 for 1000 ks with INTEGRAL to determine its hard X-ray/softgamma-ray characteristics in great detail. This pulsar is a young pulsar posssesing the highest spin-downdipole magnetic field of the known gamma-ray pulsars and is among the top four in the known radio pulsarpopulation.We plan to exploit the proposed INTEGRAL observation together with available CGRO BATSECGRO COMPTEL and BeppoSAX data for a consistent in-depth study of the pulse profile shape and spectral variations with phase from 1 keV up to 30 Mev. Such phase resolved spectral analyses give crucial input fordetailed modelling. Both scenarios outer gap and polar cap have been used for detailed calculations to account for the observed high-energy characteristics of PSR B1509-58. More detailed observations and morerefined model calculations are required to decide this ``battle. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-j2xwe81
title: 8860024

description: The hexagone dither observation with the Crab on-axis is used for absolute calibration of the response timing analysis and to improve the imaging calibration.
DOI: 10.57780/esa-j30xpp4
title: 8860115

description: OMC FF sequence ISOC V10 onwards: sequence of ff measurements with LED on/off followed by a DC cal.
DOI: 10.57780/esa-j3p48tb
title: 0530000

description: We underline the importance of deep and continued observations of the central molecular zone (CMZ) of the Galaxy with INTEGRAL as crucial to gaining a more complete understanding of the origin and nature of the energetic X-rays and gamma-rays detected from this unique part of the Galaxy. We require long cumulative exposure on the CMZ ( +- 200 pc or +-1.5 deg from Sgr A* and request 2 Ms per year for 4 years. We point out that given INTEGRALs large field of view (FOV) an observation programme in the standard dithering mode for which the nuclear region is the main target and hence within IBIS fully coded FOV will satisfy the interests of many as these central 30o abound in sources of all kinds including that which is responsible for the intense 511 keV line emission. Our primary interests remain the extended emission from the molecular complexes of the CMZ including the central compact emission region known as IGR J17456-2901. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-j4rfpbn
title: 1220001

description: The Galactic bulge region is a rich host of variable X-ray and gamma-ray point sources. Since AO-3 we are monitoring about 180 of them with one hexagonal pattern about every 3 days whenever the region is visible by INTEGRAL. Due to the high scientific return and in order to preserve the continuity with respect to past observations of this ever-changing region we propose to continue our successful program. Our main aim is to monitor and actively report on any (transient) activity  in the long run the program is providing regular and homogeneous inputs about the soft and hard-X-ray (transient) population as well as on the accretion regimes in the various types of binary systems. As a service to the scientific community the observations are to be made public. We will continue to make the IBIS/ISGRI and JEM-X quick-look results publicly available through the web soon after the data have been taken to preserve the possibility for rapid follow-up by the community. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-j55yi9r
title: 0920002

description: This is a confirmatory resubmission of the successful AO7 proposal 0720003 currently being carried out requesting a completion of the programme as described in the original proposal.  Recently significant advances have been made in  understanding of the diffuse Galactic continuum emission observed by SPI on INTEGRAL. The hard power-law component has been identified with inverse-Compton emission from relativistic (GeV) electrons on the cosmic microwave background and Galactic infrared radiation field. The observed intensity is in good agreement with detailed predictions from the GALPROP model which accounts for both primary and secondary electrons and positrons.  We propose to exploit this with INTEGRAL to obtain a probe of the distribution of cosmic-ray electrons in the Galaxy in particular in the Galactic halo seen at high latitudes. To this end we propose a multi-year scan covering a wide latitude range in the inner Galaxy significantly deepening the exposure over what is currently available. The decreasing background due to the solar cycle will improve the signal-to-noise over that for the INTEGRAL   mission so far. The results will have implications for Fermi-LAT which is now in operation - taken together the data from the  two missions will constrain the cosmic-ray electron spectrum at GeV energies and help to give an unambiguous decomposition of the diffuse gamma-ray sky. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-j8qk076
title: 0320086

description: We propose to use advantages of the INTEGRAL observatory -- excellentenergy resolution and high sensitivity of its telescopes in the hardX-rays -- to study primary eclipse light curve of SS433 andspectral changes during the eclipse in hard X-rays inprecessional phase 0.5.  This should help to localize the HXRemission region and derive its structure comparing HXR behavior withthe well-known data in softer X-ray bands (Ginga RXTE) and giveimportant hints for determination of the binary system parameters. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-jc3dkou
title: 0399836

description: Galactic Plane Survey for AO 03 and Pattern 36
DOI: 10.57780/esa-jcfqnjn
title: 8860316

description: OMC FF sequence ISOC V10 onwards: sequence of ff measurements with LED on/off followed by a DC cal.
DOI: 10.57780/esa-je6ozii
title: 0399924

description: Galactic lattitude scan Proposal for AO 03 Cycle 2
DOI: 10.57780/esa-jga7u81
title: 8860084

description: OMC FF sequence ISOC V10 onwards: sequence of ff measurements with LED on/off followed by a DC cal.
DOI: 10.57780/esa-jhm80up
title: 8860249

description: FSS-STR calibration for rev. 1154
DOI: 10.57780/esa-jhw6okx
title: 8860056

description: OMC FF sequence ISOC V10 onwards: sequence of ff measurements with LED on/off followed by a DC cal.
DOI: 10.57780/esa-jjcue94
title: 8860306

description: OMC FF sequence ISOC V10 onwards: sequence of ff measurements with LED on/off followed by a DC cal.
DOI: 10.57780/esa-jk50of0
title: 0420087

description: The Clocked Burster GS 1826-24  is a key source for comparisons of thermonuclear (type-I) burst properties and theoretical predictions. It is the only source which consistently exhibits bright regular hydrogen-rich bursts and is thus also a laboratory for studies of rp-process burning. We propose to observe the source twice during AO-4 for 50 ks each to continue our monitoring of the burst behaviour which commenced in 1997. Measurements of the burst recurrence times burst profiles and energetics will be compared to the existing dataset and best theoretical predictions to provide an increasingly stringent test of numerical ignition models. With steadily increasing persistent flux (accretion rate) over time we expect this source to eventually transition to unsteady bursting providing the opportunity to observe and hence understand this phenomenon better than ever before. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-jmfyqs7
title: 1770008

description: INTEGRAL observations of 3C 273 coordinated witn NuSTAR NICER and XMM-Newton
DOI: 10.57780/esa-jmkzz3q
title: 1270007

description: We propose to perform two exposures of half INTEGRAL revolution (~85 ks) in hexagonal dither pattern to ensure an accurate broad-band coverage. One observation should be performed near the maximum of the current giant outburst which is presumably happening at the start of the INTEGRAL visibility window (see below) the other about 2-3 weeks afterwards when the flux will be declining by a factor ~2. The scientific goals of these observations are:- a comparison with the spectrum of the previous outburst: neutron star X-ray binaries show remarkable similarities between the outbursts but for V0332+53 we have not had the opportunity to verify this trend owing to the lack of outbursts - extension the luminosity range of the L_X vs E_cyc correlation to the maximum luminosity of the current outburst which is still unknown and might exceed the previous one - application of physical models for accretion onto magnetized neutron stars to the unique broad-band spectrum observed by INTEGRAL - a combined study of timing and spectral properties using high S/N data from the current and previous outburst to unveil the accretion geometry.We notice that owing to observational constraints the 2005 outburst was followed by INTEGRAL in rather short snapshots (29 and 57 ks in rev. 272 and 273) at the outburst maximum and the proposed observations will overcome this limitation giving an unprecedented data-set to be analysed. The current 15-50 keV flux is about 600 mCrab and seems to be still increasing in a quasi-linear trend see http://swift.gsfc.nasa.gov/results/transients/V0332p53/ [truncated! Please see actual data for full text]
DOI: 10.57780/esa-jnj406a
title: 0770005

description: TOO on PKS 1830-211
DOI: 10.57780/esa-jnqqw2j
title: 0299822

description: Galactic Plane Survey for AO 02 and Pattern 22
DOI: 10.57780/esa-jryjhyy
title: 8860242

description: OMC FF sequence ISOC V10 onwards: sequence of ff measurements with LED on/off followed by a DC cal.
DOI: 10.57780/esa-jsemfgj
title: 0920011

description: This proposal is aimed on obtaining legacy-level observational datasets on the Milky Way Galactic disk.  The ultimate goal of the entire project is to have model independent and systematics free measurements of the fluxes in nuclear lines (511 keV annihilation emission 1.8 MeV Al26 and 1.17 MeV and 1.33 MeV Fe60 lines) and a broad band spectrum of the Galactic background emission which at different energies is provided either by cumulative emission of faint Galactic source or by interaction of low energy cosmic rays with interstellar medium. Taking into account the unique combination of properties of INTEGRAL instruments - broad band coverage large fields of view and possibilities to eliminate the contribution of discrete sources from the total measured photon flux the proposed strategy is the best possible usage of the valuable INTEGRAL time. Wide mapping of the Milky Way during the campaign of Galactic latitude scans also contributes to the legacy of the INTEGRAL observatory giving the opportunity to study the population of Galactic sources at high latitudes. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-jukoph1
title: 0120214

description: By many of their properties radio quiet quasars (RQQs) occupy apoorly understood  intermediary position between Seyfert 1 galaxies (Sy1s) and radio loud quasars (RLQs). In the X-ray domain there are however several notable differences between these 3 categories of Active Galactic Nuclei (AGN).We propose to observe with INTEGRAL the three brightest RQQs in the X-ray band E 1821+643 HE 1029-1401 and MR 2251-178} in order to measure the spectral shape of their hard X-ray emission which is not well known up to now. Our aim is: a) to test thepresence of Compton reflection components ionized or neutral and  b)to measure the shape and energy of the high energy spectral cut-off.The scientific goal of this proposal is to obtain a better understanding of the hard spectral energy distribution of RQQs in particular at high energies.  We will thereby  gain deeper insight on the relationship between RQQs Sy1s and RLQs.This will be achieved by taking a single exposure of 500 ksper quasar. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-jurev8q
title: 8860227

description: Crab 2011: SPI/IBIS 5x5 wide rev 1019
DOI: 10.57780/esa-jv18q3p
title: 0199914

description: Galactic Centre Deep Exposure for cycle 1 pattern 4
DOI: 10.57780/esa-jwdlzbb
title: 8860123

description: Crab-2007 Spring: JEM-X grey filter test
DOI: 10.57780/esa-jwwfiu0
title: 0620034

description: The discovery of transient Anomalous X-ray Pulsars (AXPs) and outbursts from known AXPs has opened a new perspective in the magnetars field.  This proposal is aimed at gathering new insights on the physics of magnetars through the study of the multi-band spectrum of the initial phase of their outbursts. We ask for one 200 ks ToO INTEGRAL observation to be triggered within 10 days  following a X--ray flux increase (> than a factor of 10) from a sample of known AXPs and from possible new sources. This observation is aimed at discovering (or study the variability) of the hard X-ray emissionduring magnetars outburst activity. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-jx2n1xo
title: 1220024

description: Swift/BAT and INTEGRAL/IBIS have revolutionized our view of Active Galactic Nuclei (AGN) in the local Universe. While their successful ongoing surveys count hundreds of AGN essential issues related to properties and evolution of AGN call for more sensitive surveys rather than larger numbers of AGN. To address these issues we have developed a new survey technique by merging the independent observations of BAT and IBIS/ISGRI: the Swift-INTEGRAL X-ray (SIX) survey. This survey capitalizes on the very uniform BAT sensitivity over the entire sky and the very deep sensitivity of IBIS/ISGRI over selected sky areas. Here we propose to perform a very deep IBIS/ISGRI survey of 9 Ms over a selected sky area in order to obtain the most sensitive survey of the local Universe. We will use the SIX survey to study properties and evolution of AGN in the local Universe. This will be the reference sample of local AGN in terms of redshift  luminosity parameter space. Our simulations of the proposed observations show that the lowest fluxes will be sampled on a sky area of ~300 deg^2 that is much larger compared to what NuSTAR can cover with its focusing optics. Only IBIS/ISGRI observations can lead to these achievements. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-jxat2qf
title: 8860044

description: OMC FF sequence.Contains a sequence of 5 FF observations followed by short observation with OMC in standbyfollowed by DC calibration observationfollowed by short observation with OMC in standbyobservation scheduling constraints: at least 10h after perigee and not under Goldstone coverage [truncated! Please see actual data for full text]
DOI: 10.57780/esa-jxhpuph
title: 1640004

description: We propose a 1Ms TOO observation of a bright black-hole transient either known or unknown to follow its complete transition from hard to soft state. This transition which takes place at high flux levels encompasses marked changes in the properties of the accretion flow and it includes the time at which the ejection of an accelerating relativistic jet stops abruptly. The study of the high-energy properties during the transition is important for our understanding of accretion onto black holes and can only be accomplished with INTEGRAL. A simultaneous large multi-wavelength campaign is being organized to support the proposed observation including other X-ray satellites. In particular we have submitted a proposal for a 10-day near-continuous coverage of a black-hole transient with AstroSat with similar trigger criteria. The campaign will be centered around the INTEGRAL and Astrosat pointings. The trigger will be provided by a threshold limit in either hard or soft X-ray flux. Such a monitoring  is becoming a key goal in the community working on black-hole binaries. [truncated! Please see actual data for full text]