cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.57780/esa-5w0pb7j
title: 1720001

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 190 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-5wlc7ni
title: 8860308

description: OMC FF sequence ISOC V10 onwards: sequence of ff measurements with LED on/off followed by a DC cal.
DOI: 10.57780/esa-5xz5jwr
title: 1370002

description: Multi-wavelength campaign on Cyg X-1
DOI: 10.57780/esa-5z9icas
title: 1570001

description: We propose to observe the new bright X-ray transient Swift J1658.2-4242 as soon as feasible during one of the coming revolutions for a total exposure time of ~170 ks in order to probe the nature of the source (the observation can also be split in two revolutions).We note that although the Galactic Center region will be observed during the next revolutions Swift J1658.2-4242 will be always far off-axis and visible only in a very few pointings. This is detrimental for the spectral signal to noise ratio and the instrument calibrations (beside being always outside the JEMX field of view).The observation could be performed together with an already accepted NuSTAR DDT ToO (not requested by our group but the NuSTAR PI can be contacted).Swift J1658.2-4242 is a new transient source in the Galactic plane which has been recently discovered by the Swift Burst Alert Telescope (GCN #22416 GCN #22417). A follow up Swift/XRT observation (ATel #11307) showed that its 0.3-10 keV spectrum can be described by an absorbed power-law with photon index 1.2+/-0.3 and column density of 1.5e23 cm^-2. The source flux is about 7.2 (+/-0.6)E-10 erg/cm^2/s in the 0.3-10 keV.Swift J1658.2-4242 has been observed also by INTEGRAL (ATEL #11306) during an observation of the Galactic center region.The source was always observed strongly off-axis thus outside of the JEM-X field of view. The IBIS/ISGRI fluxes were about 7e-10 erg/cm^2/s (20-40 keV) and 4e-10 erg/cm^2/s (40-80 keV).Kennea (ATel #11311) reported the detection of possible periodicity in Swift/XRT data (exposure: 1629s) of P = 8.7274 +- 0.0078 s indicating the Swift J1658.2-4242 is possibly an accreting pulsar.We propose to monitor the soft and hard X-ray emission of the source throughout the evolution and fall of the outburst to better constrain its nature from its X-ray properties and optimally measure its broad-band X-ray spectrum looking in particular for cyclotron lines. If detec [truncated! Please see actual data for full text]
DOI: 10.57780/esa-5zsm5uh
title: 1320015

description: The structure and energetics of the innermost regions of black holes are still matter of debate. In particular a lot of the attention is given to the understanding of the radiative mechanisms in coronal plasma around the black hole as well as its connection to the accretion disk and the outflowing material in winds and jets. We have identified the NLSy1 Mkn 110 as an ideal laboratory to investigate both issues through its multi wavelength variability. On one hand an energy-dependent delay between the hard and the soft X-ray emission on few minutes to one hour scale has been discovered in this source and it has been modeled in terms of Comptonization in a hot plasma within 10 R_S from the black hole. On the other hand this source is one of the most variable X-ray AGN in the RXTE sample on time scales of months to years with similar variability also observed in the 8.4 GHz VLA radio light curve (with a peak to peak variability amplitude of ~ 60%) suggesting a connection between the inflow and the outflow. Here we propose to observe Mkn 110 with INTEGRAL for 980 ks followed-up by Swift(XRT) and VLBA observations with the main aim of looking for possible multi frequency time lags. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-62mfxf7
title: 8860234

description: OMC FF sequence ISOC V10 onwards: sequence of ff measurements with LED on/off followed by a DC cal.
DOI: 10.57780/esa-63jzump
title: 8860048

description: Crab calibration spring/04.Crab on-axis observation with 5x5 dither.
DOI: 10.57780/esa-65rmolh
title: 0120281

description: SS 433 is a galactic superaccreting binary with relativistic jets.Previously performed numerous X-ray observations of this source left main important topics undiscovered. Neither the compact object type and mass nor the jet acceleration mechanizm is known.We propose to obtain the hard X-ray and gamma spectrum of SS 433 with INTEGRAL with attempt to trace the variation of the spectrum  with precession phase and in eclipses.This  hard emission might be produced in  the  lower region of the jet according to mostmodels of the jets.The expected scientific output of the proposed observation is clarification of jet formation and emission model and possible putting more strict limits on the compact object nature.  [truncated! Please see actual data for full text]
DOI: 10.57780/esa-665fafs
title: 0520050

description: Several years ago a new class of type I X-ray bursters was discovered. This sources were detected only during an X-ray burst and no persistent emission around the burst (burst-only sources). On the present moment more then ten sources can be related to this class of objects (that exceed 15% from all known bursters).We propose a set from 2 observations any of 14 known sources (or/and from unknown source(s) from which it will be detected an X-ray burst and which do not show clear detectable persistent emission) in a bursting state. Duration of each observation is ~200ks one just after a detecting the first X-ray burst from a source with any X-ray mission (INTEGRAL SWIFT RXTE...) and one 30-40 days after the first observation. A bursting state of a such source could means that the source stays in a high state (with flux $>10^{34-35}$ ergs/s in soft energy band 1-8 keV). But then the flux from this system in a low state could be below $10^{33}$ ergs/s. It means that it is very difficult to detect such source in the low state even using high sensitive telescopes. The main goal of the proposal to determine possible hard X-ray counterpart of such source during a high state and to study its spectral and temporal evolution (during transition to low state).We also have submitted proposal on the follow-up observations of X-ray bursters with weak persistent emission in a high state on CHANDRA mission and planing organize simultaneous observations on other wavelength. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-66w8d4z
title: 0120192

description: We propose to study in detail a hard X-ray emission from transient and burster Aql X-1.With a total ~300 ksec exposure in 6 observations during a full outburst (one observationwith exposure of 50.4 ksec per five days after the begining of outburst) we plan to studythe evolution of hard X-ray (IBIS and SPI energy band) spectrum. That will enable us to testthe hypothesis about anti-correlation among hard and soft (JEM-X energy band) X-rayemission and answer on the questions about the nature of the hard X-ray emission(thermal-like Comptonization versus non-thermal impulsive acceleration) and do NSsystems spectral properties compare with those of BH systems. And second task isinvestigation of X-ray bursts using timing and spectral capabilities of INTEGRAL telescopes. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-684kr7e
title: 8860251

description: Crab 2012: JEM-X Staring rev 1159
DOI: 10.57780/esa-68lp67j
title: 0620059

description: (Abridged) This proposal is a continuation of the on-going (AO4--AO5) program of making a several Msec-long series of multiple latitude scans of selected regions of the Galactic disk. Even although our AO4 and AO5 accepted proposals are not yet completed our analysis of first 4 Msec of already performed observations showed that this technique of studying the extended/diffuse high-energy emission of the Galaxy is very successful in minimizing systematic errors associated with the SPI and ISGRI detectors background variations and thus providing a clean emission spectrum of the Galactic disk limited only by the photon counting statistics. In this proposal we selected three regions in the Galaxy for dissections -- l~4022.5 -30 -- which will be complimentary to the already performed observations of the inner Galaxy [truncated! Please see actual data for full text]
DOI: 10.57780/esa-69387mn
title: 1420005

description: For as long as X-ray astronomy exists X-ray (and gamma-ray) astronomers consider the Crab supernova remnant to be a steady standard candle suitable as a calibration source. INTEGRAL has been observing the Crab for mainly calibration purposes only about twice per year for a total of about 4 revolutions per AO up to AO-11. Further observations have been sparse and only every now and then it was in the field of view during a few ad-hoc observations of relatively nearby sources. In AO-11 we started a program to monitor the Crab more frequently on a regular basis. We propose to continue this project. The objectives are two-fold: 1) monitor and seek for accompanying flares which have been seen at $>$100MeV by Fermi and AGILE 2) improve on the (cross-) calibration of the INTEGRAL instruments as well as with other high-energy instruments. We propose to look at the Crab every 4th revolution with a single standard 5x5 pattern for 45 ksec. The data will be made public immediately. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-6c1gahc
title: 8860118

description: OMC FF sequence ISOC V10 onwards: sequence of ff measurements with LED on/off followed by a DC cal.
DOI: 10.57780/esa-6dvw3of
title: 8860159

description: OMC FF sequence ISOC V10 onwards: sequence of ff measurements with LED on/off followed by a DC cal.
DOI: 10.57780/esa-6epqhu2
title: 0299824

description: Galactic Plane Survey for AO 02 and Pattern 24
DOI: 10.57780/esa-6g8gwfy
title: 8860275

description: OMC FF sequence ISOC V10 onwards: sequence of ff measurements with LED on/off followed by a DC cal.
DOI: 10.57780/esa-6j10e22
title: 1720014

description: Massive stars and their impacts on their surrounding interstellar medium comprise the feedback scenario which is one of the main astrophysical issues in the context of galaxy and cosmic chemical evolution. Radioactivity from 26Al adds a unique diagnostic tool for studying this scenario in nearby massive-star regions. The Orion region hosts one of the closest such regions at ~400 pc. COMPTELs measurement of 1809 keV emission from this region had shown an interesting offset of the 26Al emission source from its likely sources and emission appears rather extended. This suggests champagne-like outflow into the Eridanus cavity as has recently also been seen with XMM-Newton. If true this opens unique possibilities to study the ISM as it is shaped by massive stars and the interaction of massive stars with their surrounding ISM in a new way: Due to their proximity and location on the near side of molecular clouds and at the edge of a large cavity we can compare the locations of massive stars to the morphology of the ISM and the emission pattern of 26Al radioactivity in order to constrain 26Al ejection from massive stars in mass and velocity. First observations with~3 Ms of exposure were enough for a marginal hint of the expected signal. With our proposed deepening of exposure we aim to measure the intensity and kinematics of this nearby 26Al source with INTEGRAL. With these observations we can also search for annihilation radiation and for the intensity of nuclear deexcitation gamma-rays in the MeV range both valuable diagnostics of the structure of superbubble interiors and more than 30 Fermi sources are within our target region. But mainly this will give us unique measurements of ISM dynamics and massive stars as its driving engines within INTEGRALs lifetime  there is hardly a more suitable and closer target region. [truncated! Please see actual data for full text]
DOI: 10.3217/25g2e-6ha82
title: The uncertainty inherent to DEM simulations of interlocking particles, Dataset

description: This dataset contains all postprocessed data used in "The uncertainty inherent to DEM simulations of interlocking particles" by Maier, Mitterlindner, Benabchiasli, Fasching, and Radl (2025) (DOI: 10.1038/s41598-025-90129-6). This data can be used to reproduce all results presented in said study.
DOI: 10.57780/esa-6jtak9q
title: 1870010

description: The source has recently entered into outburst. We observe an increase in the radio band with a flux reaching about 10 Jy at 4.7 GHz. Moreover Swift/Bat shows an increase in the lightcurve the flux is more than 100 mCrab in the 15-50 keV band.With this observation we aim to:- investigate the evolution of hard X-ray spectral shape and the relative contribution of the Comptonization and jet components to the X-ray spectra emission. - assess correlated multi-wavelength behavior across the spectral states to probe the accretion-ejection connec- tion and the contribution of the jets to the hard X-ray emission in different states. - search for mHz QPOs that have been previosly detected only in individual observations of Cyg X-3. INTEGRALs unique long observations are especially well suited for searches for such slow QPOs that at lower energies are also expected to be washed out by the Compton thick absorption in the dense wind of the companion.  [truncated! Please see actual data for full text]
DOI: 10.3217/x03b4-cqs65
title: The uncertainty inherent to DEM simulations of interlocking particles, Dataset

description: This dataset contains all postprocessed data used in "The uncertainty inherent to DEM simulations of interlocking particles" by Maier, Mitterlindner, Benabchiasli, Fasching, and Radl (2025) (DOI: 10.1038/s41598-025-90129-6). This data can be used to reproduce all results presented in said study.
DOI: 10.57780/esa-6krdenl
title: 1670009

description: The black hole X-ray binary GRS1915+105 (1915) has been in outburst since 1992. 1915 is the first micro-quasar that showed relativistic super-luminal radio ejections (Mirabel+1994) and it is known for its X-ray variability states (Belloni+1999) and the clear disk:jet coupling. We hereby ask for 90ks of INTEGRAL observing time to be scheduled overlapping with the 45ks XMM-Newton TOO in order to probe the high-energy emission of 1915. Only XMM-Newton and INTEGRAL are able to provide the long uninterrupted observations necessary to probe the X-ray emission of GRS1915+105 on hourly time-scales. Our main goal is to probe the accretion flow in this unusual accretion state through broad-band spectroscopy of the source which will also potentially offer new insights into the properties of accretion disc and of possible outflows. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-6krg66r
title: 1770006

description: INTEGRAL Observations of Vela X-1
DOI: 10.57780/esa-6o7u6hu
title: 8860262

description: This is a public observation where the Earth will drift through the field of view of the INTEGRAL instruments. Results from this observation will help in separating the cosmic and instrumental backgrounds and so ultimately lead to improved background subtraction.Scientifically the main goals are to measure the spectral shape of the cosmic X-ray background emission above 20 keV and to study any high-energy emission from the Earth during storms in auroral regions. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-6ob2ji8
title: 1970007

description: Multiwavelength coordinated observation of 3C 273
DOI: 10.57780/esa-6pcvvw0
title: 1520026

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 and 1.8 MeV Al26) 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-6wksd9n
title: 1040022

description: One of the most active areas in black hole research currently is understanding the role of jets in the overall emission properties of black holes from radio all the way to gamma-rays. Thanks to RXTE and the daily monitoring campaigns of radio and optical/IR facilities we have gained good understanding of the relation between jet emission in the optical/Infrared (OIR) Radio and X-rays in the PCA band. Yet our understanding about jet and high energy emission is still not clear because of limited information from INTEGRAL and due to absence of dedicated reasonably long observations to investigate this relation directly. Using HEXTE on RXTE and some INTEGRAL data we clearly see the spectral breaks right before we see evidence of compact jets in radio and IR during outburst decays but we do not know how they evolve. This evolution may provide information about the conditions of launching compact jets that are ubiquitous in the low hard state of black holes. With the experience our group gained over the years we can pinpoint almost exactly the time that the compact jet forms and evolves during decays of outbursts. We therefore propose one TOO observation of a GBHT with INTEGRAL for 220 ks at the transition to the hard state as the jet turns on to investigate the relation between the X-ray emission and jet formation. We will achieve multiwavelength coverage using ATCA in radio and SMARTS in OIR. This proposal is accompanied by an accepted SWIFT proposal. The current archival data are not enough to carry out this research. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-6wkxgfo
title: 8860133

description: AOCS calibration rev 562: FSS/STR Misalignment + SAS calibrations
DOI: 10.57780/esa-6y07vfs
title: 0320110

description: Observations of the X-ray background strongly suggest that there should be a large number of highly obscured AGN in the local Universe. However the exact number and space density of these objects remains unknown even though they may nearly double the space density of supermassive black holes. These Compton-thick AGN will be easily detected by INTEGRAL. We propose very deep (3 Msec) INTEGRAL observations of the XMM-LSS field which will provide a complete view of the highly obscured AGN population in the local Universe. The combination of INTEGRAL high-energy coverage with XMMs excellent X-ray spectral and spatial resolution allows for essential multiwavelength follow up of these sources providing unprecedented information on NH redshifts bolometric luminosities etc. for Compton-thick AGN. Together with the existing XMM GALEX Spitzer and VLA data the INTEGRAL observations will make this by far the best field in the sky to obtain a complete sample of Compton-thick AGN in the local Universe leading to a solution of the long-standing X-ray background problem and a full understanding of the demographics of black holes. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-75fzns2
title: 8860116

description: AOCS calibrations revolution 501: FSS/STR Misalignment Calibration
DOI: 10.57780/esa-765t0a0
title: 1020011

description: The Large  and  Small Magellanic Clouds (LMC  and  SMC) represent an exceptional opportunity to study the evolution of X-ray binaries (XRB) under very different conditions to those in the Milky Way. The Clouds are close enough for the individual sources to be detected identified  and  studied whilst presenting diverse environments in terms of metallicity and tidal effects. In addition the population as a whole is possibly greater than the comparable Milky Way population so it provides an invaluable test-bed for accretion physics  and  binary evolution. An earlier Key Programme covering the SMC produced a wealth of data on persistent and transient systems plus revealing strong evidence for the emergence of a new XRB population in the western Bridge (the structure linking the LMC to the SMC). We request time to carry out regular monitoring of the SMC to locate new transient pulsar systems and to continue exploring the ~100 known  and  suspected HMXB systems (precise source location will be achieved using the XMM time). This source location step is critical to unlocking the full potential science of these High Mass X-ray Binary (HMXB) systems and it enables us to explore stellar and binary evolution in different chemical and tidal environments. Only INTEGRAL has a big enough field of view to be able to carry out this crucial role of monitoring activity across the whole SMC/Bridge region. In this proposal we request 12 x 100ks INTEGRAL observations over a period of 3 months with contemporaneous XMM observations. This intensive monitoring programme will permit us to extend the work started by RXTE (Galache et al. 2008 ApJS 177 189) and complement the XMM survey of the SMC carried out in 2010 (PI Frank Haberl). We further request that this programme is repeated in the following AO-11 round to maintain the monitoring/exploring programme into the future. All these studies will be supported by OGLE IV monitoring of the SMC  and  Bridge as wel [truncated! Please see actual data for full text]
DOI: 10.57780/esa-770syf0
title: 0199922

description: Galactic Centre Deep Exposure for cycle 2 pattern 2
DOI: 10.57780/esa-78petlv
title: 0840006

description: We propose  to perform a 250 ks INTEGRAL ToO observation of a transient millisecond X-ray pulsar in outburst. The target can be either one of the ten known transient accreting millisecond X-ray pulsars in the case of a new outburst or a newly observed object of this class. As these transient sources have broad astronomical interest an outburst will trigger ToO criteria with other X-ray observatories. These observations can be coordinated in order to study the broad band spectrum in detail from hard to soft X-ray energies as well as the timing properties or eclipsing features of the  source during its outburst.  This will allow us to disentangle the contribution of soft black body reflection (if any) and hard Comptonized spectral components as well as the detection of type-I X-ray bursts or for the first time also burst oscillation at high energy (if present). In particular we will be able to study the energy spectrum of these sources which is usually observed to be quite hard even in outburst in a broad band energy range and with unprecedented high sensitivity above 20 keV. The INTEGRAL observation will also allow  a timing analysis to study the pulse profile time lags total and pulsed spectrum in an interesting energy range also for in future planed missions. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-79ir5kw
title: 8860312

description: Crab 2015.2 in 1598-99