A dataset provided by the European Space Agency

Name: Regular INTEGRAL monitoring of the Crab
Published: 2025-03-25T09:54:38Z

Proposal ID	1420005
Obs ID	14200050001, 14200050002, 14200050003, 14200050004, 14200050005, 14200050006, 14200050007
Title	Regular INTEGRAL monitoring of the Crab
Download Data Associated to the proposal	https://isla.esac.esa.int/tap/download/bundle?format=ascii_curl&product_id=prop_id:1420005
DOI	https://doi.org/10.57780/esa-69387mn
Author	Kuulkers
Abstract	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 $>$100\,MeV 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.
Publications	2003-2018 Monitoring of the Crab Nebula Polarization in Hard X-Rays with INTEGRAL SPI - Jourdain, E., Roques, J. -P. (2019-09-01) http://ui.adsabs.harvard.edu/#abs/2019ApJ...882..129J 2003-2019 Monitoring of the Crab Emission through INTEGRAL SPI, or Vice Versa - Jourdain, E., Roques, J. P. (2020-08-01) http://ui.adsabs.harvard.edu/#abs/2020ApJ...899..131J A photometric study of two neglected eclipsing binaries - Kudak, V., Fedurco, M.,Perig, V.,Parimucha, S. (2021-08-01) http://ui.adsabs.harvard.edu/#abs/2021RAA....21..174K Background modelling for I3-ray spectroscopy with INTEGRAL/SPI - Siegert, Thomas, Diehl, Roland,Weinberger, Christoph,Pleintinger, Moritz M. M.,Greiner, Jochen,Zhang, Xiaoling (2019-06-01) http://ui.adsabs.harvard.edu/#abs/2019A&A...626A..73S Gamma-Ray Emission of ⁶⁰Fe and ²⁶Al Radioactivity in Our Galaxy - Wang, W., Siegert, T.,Dai, Z. G.,Diehl, R.,Greiner, J.,Heger, A.,Krause, M.,Lang, M.,Pleintinger, M. M. M.,Zhang, X. L. (2020-02-01) http://ui.adsabs.harvard.edu/#abs/2020ApJ...889..169W Multiwavelength observation of 1A 0535+262=HD 245770 from 2010 to 2021 - Liu, Wei, Yan, Jingzhi,Xiao, Guangcheng,Li, Xiukun,Gao, Bo,Liu, Qingzhong (2024-01-01) http://ui.adsabs.harvard.edu/#abs/2024A&A...681A..10L New hard X-ray sources discovered in the ongoing INTEGRAL Galactic plane survey after 14 yr of observations - Krivonos, Roman A., Tsygankov, Sergey S.,Mereminskiy, Ilya A.,Lutovinov, Alexander A.,Sazonov, Sergey Yu.,Sunyaev, Rashid A. (2017-09-01) http://ui.adsabs.harvard.edu/#abs/2017MNRAS.470..512K Study of changes in the pulsation period of 148 Galactic Cepheid variables - Csornyei, G., Szabados, L.,Molnar, L.,Cseh, B.,Egei, N.,Kalup, Cs,Kecskemethy, V.,Konyves-Toth, R.,Sarneczky, K.,Szakats, R. (2022-04-01) http://ui.adsabs.harvard.edu/#abs/2022MNRAS.511.2125C The 7-year MAXI/GSC Source Catalog of the Low-Galactic-latitude Sky (3MAXI) - Hori, T., Shidatsu, M.,Ueda, Y.,Kawamuro, T.,Morii, M.,Nakahira, S.,Isobe, N.,Kawai, N.,Mihara, T.,Matsuoka, M.,Morita, T.,Nakajima, M.,Negoro, H.,Oda, S.,Sakamoto, T.,Serino, M.,Sugizaki, M.,Tanimoto, A.,Tomida, H.,Tsuboi, Y.,Tsunemi, H.,Ueno, S.,Yamaoka, K.,Yamada, S.,Yoshida, A.,Iwakiri, W.,Kawakubo, Y.,Sugawara, Y.,Sugita, S.,Tachibana, Y.,Yoshii, T. (2018-03-01) http://ui.adsabs.harvard.edu/#abs/2018ApJS..235....7H The Galactic Bulge Diffuse Emission in Broadband X-Rays with NuSTAR - Perez, Kerstin, Krivonos, Roman,Wik, Daniel R. (2019-10-01) http://ui.adsabs.harvard.edu/#abs/2019ApJ...884..153P
Temporal Coverage	2017-02-10T13:31:42Z / 2017-10-24T06:57:31Z
Version	1.0
Mission Description	The INTEGRAL (International Gamma-Ray Astrophysics Laboratory) mission, launched by the European Space Agency (ESA) on October 17, 2002, was designed to study high-energy phenomena in the universe. INTEGRAL was operating until february 2025 and it was equipped with three high-energy instruments: the Imager on Board the INTEGRAL Satellite (IBIS), the Spectrometer on INTEGRAL (SPI), and the JEM-X (Joint European Monitor for X-rays). Its Optical Monitoring Camera (OMC) provided optical V-band magnitude measurements, complementing the high-energy observations.
Creator Contact	https://www.cosmos.esa.int/web/integral/helpdesk
Date Published	2025-03-25T09:54:38Z
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Kuulkers, 2025, 'Regular INTEGRAL monitoring of the Crab', 1.0, European Space Agency, https://doi.org/10.57780/esa-69387mn