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1. X-ray polarization measurement of the gold standard of radio-quiet active galactic nuclei : NGC 1068

Author

Marin, F., Marinucci, A., Laurenti, M., Kim, D. E., Barnouin, T., Di Marco, A., Ursini, F., Bianchi, S., Ravi, S., Marshall, H. L., Matt, G., Chen, C. -T., Gianolli, V. E., Ingram, A., Maksym, W. P., Panagiotou, C., Podgorny, J., Puccetti, S., Ratheesh, A., Tombesi, F., Agudo, I., Antonelli, L. A., Bachetti, M., Baldini, L., Baumgartner, W., Bellazzini, R., Bongiorno, S., Bonino, R., Brez, A., Bucciantini, N., Capitanio, F., Castellano, S., Cavazzuti, E., Ciprini, S., Costa, E., De Rosa, A., Del Monte, E., Di Gesu, L., Di Lalla, N., Donnarumma, I., Doroshenko, V., Dovciak, M., Ehlert, S., Enoto, T., Evangelista, Y., Fabiani, S., Ferrazzoli, R., Garcia, J., Gunji, S., Heyl, J., Iwakiri, W., Jorstad, S., Kaaret, P., Karas, V., Kislat, F., Kitaguchi, T., Kolodziejczak, J., Krawczynski, H., La Monaca, F., Latronico, L., Liodakis, I., Madejski, G., Maldera, S., Manfreda, A., Marscher, A., Massaro, F., Mitsuishi, I., Mizuno, T., Muleri, F., Negro, M., Ng, S., O'Dell, S., Omodei, N., Oppedisano, C., Papitto, A., Pavlov, G., Perri, M., Pesce-Rollins, M., Petrucci, P. -O., Pilia, M., Possenti, A., Poutanen, J., Ramsey, B., Rankin, J., Roberts, O., Romani, R., Sgro, C., Slane, P., Soffitta, P., Spandre, G., Swartz, D., Tamagawa, T., Tavecchio, F., Taverna, R., Tawara, Y., Tennant, A., Thomas, N., Trois, A., Tsygankov, S., Turolla, R., Vink, J., Weisskopf, M., Wu, K., Xie, F., and Zane, S.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Astrophysics of Galaxies, J.2.3, J.2.9
Abstract

We used the Imaging X-ray Polarimetry Explorer (IXPE) satellite to measure, for the first time, the 2-8 keV polarization of NGC 1068. We pointed IXPE for a net exposure time of 1.15 Ms on the target, in addition to two ~ 10 ks each Chandra snapshots in order to account for the potential impact of several ultraluminous X-ray source (ULXs) within IXPE's field-of-view. We measured a 2 - 8 keV polarization degree of 12.4% +/- 3.6% and an electric vector polarization angle of 101{\deg} +/- 8{\deg} at 68% confidence level. If we exclude the spectral region containing the bright Fe K lines and other soft X-ray lines where depolarization occurs, the polarization fraction rises up to 21.3% +/- 6.7% in the 3.5 - 6.0 keV band, with a similar polarization angle. The observed polarization angle is found to be perpendicular to the parsec scale radio jet. Using a combined Chandra and IXPE analysis plus multi-wavelength constraints, we estimated that the circumnuclear "torus" may sustain a half-opening angle of 50{\deg} - 55{\deg} (from the vertical axis of the system). Thanks to IXPE, we have measured the X-ray polarization of NGC 1068 and found comparable results, both in terms of polarization angle orientation with respect to the radio-jet and torus half-opening angle, to the X-ray polarimetric measurement achieved for the other archetypal Compton-thick AGN : the Circinus galaxy. Probing the geometric arrangement of parsec-scale matter in extragalactic object is now feasible thanks to X-ray polarimetry., Comment: 9 pages, 5 figures, 2 tables, submited to A&A

Published
2024
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2. IXPE observation confirms a high spin in the accreting black hole 4U 1957+115

Author

Marra, L., Brigitte, M., Cavero, N. Rodriguez, Chun, S., Steiner, J. F., Dovčiak, M., Nowak, M., Bianchi, S., Capitanio, F., Ingram, A., Matt, G., Muleri, F., Podgorný, J., Poutanen, J., Svoboda, J., Taverna, R., Ursini, F., Veledina, A., De Rosa, A., Garcia, J. A., Lutovinov, A. A., Mereminskiy, I. A., Farinelli, R., Gunji, S., Kaaret, P., Kallman, T., Krawczynski, H., Kan, Y., Hu, K., Marinucci, A., Mastroserio, G., Mikušincová, R., Parra, M., Petrucci, P. O., Ratheesh, A., Soffitta, P., Tombesi, F., Zane, S., Agudo, I., Antonelli, L. A., Bachetti, M., Baldini, L., Baumgartner, W. H., Bellazzini, R., Bongiorno, S. D., Bonino, R., Brez, A., Bucciantini, N., Castellano, S., Cavazzuti, E., Chen, C., Ciprini, S., Costa, E., Del Monte, E., Di Gesu, L., Di Lalla, N., Di Marco, A., Donnarumma, I., Doroshenko, V., Ehlert, S. R., Enoto, T., Evangelista, Y., Fabiani, S., Ferrazzoli, R., Hayashida, K., Heyl, J., Iwakiri, W., Jorstad, S. G., Karas, V., Kislat, F., Kitaguchi, T., Kolodziejczak, J. J., La Monaca, F., Latronico, L., Liodakis, I., Maldera, S., Manfreda, A., Marin, F., Marscher, A. P., Marshall, H. L., Massaro, F., Mitsuishi, I., Mizuno, T., Negro, M., Ng, C. Y., O'Dell, S. L., Omodei, N., Oppedisano, C., Papitto, A., Pavlov, G. G., Peirson, A. L., Perri, M., Pesce-Rollins, M., Pilia, M., Possenti, A., Puccetti, S., Ramsey, B. D., Rankin, J., Roberts, O. J., Romani, R. W., Sgro, C., Slane, P., Spandre, G., Swartz, D. A., Tamagawa, T., Tavecchio, F., Tawara, Y., Tennant, A. F., Thomas, N. E., Trois, A., Tsygankov, S. S., Turolla, R., Vink, J., Weisskopf, M. C., Wu, K., and Xie, F.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

We present the results of the first X-ray polarimetric observation of the low-mass X-ray binary 4U 1957+115, performed with the Imaging X-ray Polarimetry Explorer in May 2023. The binary system has been in a high-soft spectral state since its discovery and is thought to host a black hole. The $\sim$571 ks observation reveals a linear polarisation degree of $1.9\% \pm 0.6\%$ and a polarisation angle of $-41^\circ.8 \pm 7^\circ.9$ in the 2-8 keV energy range. Spectral modelling is consistent with the dominant contribution coming from the standard accretion disc, while polarimetric data suggest a significant role of returning radiation: photons that are bent by strong gravity effects and forced to return to the disc surface, where they can be reflected before eventually reaching the observer. In this setting, we find that models with a black hole spin lower than 0.96 and an inclination lower than $50^\circ$ are disfavoured., Comment: 12 pages, 10 figures, 2 tables, accepted for publication in A&A

Published
2023

3. X-ray polarimetry and spectroscopy of the neutron star low-mass X-ray binary GX 9+9: an in-depth study with IXPE and NuSTAR

Author

Ursini, F., Farinelli, R., Gnarini, A., Poutanen, J., Bianchi, S., Capitanio, F., Di Marco, A., Fabiani, S., La Monaca, F., Malacaria, C., Matt, G., Mikušincová, R., Cocchi, M., Kaaret, P., Kajava, J. J. E., Pilia, M., Zhang, W., Agudo, I., Antonelli, L. A., Bachetti, M., Baldini, L., Baumgartner, W. H., Bellazzini, R., Bongiorno, S. D., Bonino, R., Brez, A., Bucciantini, N., Castellano, S., Cavazzuti, E., Chen, C. -T., Ciprini, S., Costa, E., De Rosa, A., Del Monte, E., Di Gesu, L., Di Lalla, N., Donnarumma, I., Doroshenko, V., Dovčiak, M., Ehlert, S. R., Enoto, T., Evangelista, Y., Ferrazzoli, R., Garcia, J. A., Gunji, S., Hayashida, K., Heyl, J., Iwakiri, W., Jorstad, S. G., Karas, V., Kislat, F., Kitaguchi, T., Kolodziejczak, J. J., Krawczynski, H., Latronico, L., Liodakis, I., Maldera, S., Manfreda, A., Marin, F., Marinucci, A., Marscher, A. P., Marshall, H. L., Massaro, F., Mitsuishi, I., Mizuno, T., Muleri, F., Negro, M., Ng, C. -Y., O'Dell, S. L., Omodei, N., Oppedisano, C., Papitto, A., Pavlov, G. G., Peirson, A. L., Perri, M., Pesce-Rollins, M., Petrucci, P. -O., Possenti, A., Puccetti, S., Ramsey, B. D., Rankin, J., Ratheesh, A., Roberts, O. J., Romani, R. W., Sgrò, C., Slane, P., Soffitta, P., Spandre, G., Swartz, D. A., Tamagawa, T., Tavecchio, F., Taverna, R., Tawara, Y., Tennant, A. F., Thomas, N. E., Tombesi, F., Trois, A., Tsygankov, S. S., Turolla, R., Vink, J., Weisskopf, M. C., Wu, K., Xie, F., and Zane, S.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Solar and Stellar Astrophysics
Abstract

We report on a comprehensive analysis of simultaneous X-ray polarimetric and spectral data of the bright atoll source GX 9+9 with the Imaging X-ray Polarimetry Explorer (IXPE) and NuSTAR. The source is significantly polarized in the 4--8 keV band, with a degree of $2.2\% \pm 0.5\%$ (uncertainty at the 68% confidence level). The NuSTAR broad-band spectrum clearly shows an iron line, and is well described by a model including thermal disk emission, a Comptonized component, and reflection. From a spectro-polarimetric fit, we obtain an upper limit to the polarization degree of the disk of 4% (at 99% confidence level), while the contribution of Comptonized and reflected radiation cannot be conclusively separated. However, the polarization is consistent with resulting from a combination of Comptonization in a boundary or spreading layer, plus reflection off the disc, which gives a significant contribution in any realistic scenario., Comment: 10 pages, accepted for publication in A&A

Published
2023
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4. The X-ray polarisation of the Seyfert 1 galaxy IC 4329A

Author

Ingram, A., Ewing, M., Marinucci, A., Tagliacozzo, D., Rosario, D. J., Veledina, A., Kim, D. E., Marin, F., Bianchi, S., Poutanen, J., Matt, G., Marshall, H. L., Ursini, F., De Rosa, A., Petrucci, P-O., Madejski, G., Barnouin, T., Di Gesu, L., Dovvciak, M., Gianolli, V. E., Krawczynski, H., Loktev, V., Middei, R., Podgorny, J., Puccetti, S., Ratheesh, A., Soffitta, P., Tombesi, F., Ehlert, S. R., Massaro, F., Agudo, I., Antonelli, L. A., Bachetti, M., Baldini, L., Baumgartner, W. H., Bellazzini, R., Bongiorno, S. D., Bonino, R., Brez, A., Bucciantini, N., Capitanio, F., Castellano, S., Cavazzuti, E., Chen, C. -T., Ciprini, S., Costa, E., Del Monte, E., Di Lalla, N., Di Marco, A., Donnarumma, I., Doroshenko, V., Enoto, T., Evangelista, Y., Fabiani, S., Ferrazzoli, R., Garcia, J. A., Gunji, S., Heyl, J., Iwakiri, W., Jorstad, S. G., Kaaret, P., Karas, V., Kislat, F., Kitaguchi, T., Kolodziejczak, J. J., La Monaca, F., Latronico, L., Liodakis, I., Maldera, S., Manfreda, A., Marscher, A. P., Mitsuishi, I., Mizuno, T., Muleri, F., Negro, M., Ng, C. -Y., ODell, S. L., Omodei, N., Oppedisano, C., Papitto, A., Pavlov, G. G., Peirson, A. L., Perri, M., Pesce-Rollins, M., Pilia, M., Possenti, A., Ramsey, B. D., Rankin, J., Roberts, O. J., Romani, R. W., Sgro, C., Slane, P., Spandre, G., Swartz, D. A., Tamagawa, T., Tavecchio, F., Taverna, R., Tawara, Y., Tennant, A. F., Thomas, N. E., Trois, A., Tsygankov, S. S., Turolla, R., Vink, J., Weisskopf, M. C., Wu, K., Xie, F., and Zane, S.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

We present an X-ray spectro-polarimetric analysis of the bright Seyfert galaxy IC 4329A. The Imaging X-ray Polarimetry Explorer (IXPE) observed the source for ~500 ks, supported by XMM-Newton (~60 ks) and NuSTAR (~80 ks) exposures. We detect polarisation in the 2-8 keV band with 2.97 sigma confidence. We report a polarisation degree of $3.3\pm1.1$ per cent and a polarisation angle of $78\pm10$ degrees (errors are 1 sigma confidence). The X-ray polarisation is consistent with being aligned with the radio jet, albeit partially due to large uncertainties on the radio position angle. We jointly fit the spectra from the three observatories to constrain the presence of a relativistic reflection component. From this, we obtain constraints on the inclination angle to the inner disc (< 39 degrees at 99 per cent confidence) and the disc inner radius (< 11 gravitational radii at 99 per cent confidence), although we note that modelling systematics in practice add to the quoted statistical error. Our spectro-polarimetric modelling indicates that the 2-8 keV polarisation is consistent with being dominated by emission directly observed from the X-ray corona, but the polarisation of the reflection component is completely unconstrained. Our constraints on viewer inclination and polarisation degree tentatively favour more asymmetric, possibly out-flowing, coronal geometries that produce more highly polarised emission, but the coronal geometry is unconstrained at the 3 sigma level., Comment: Accepted for publication in MNRAS, 13 pages, 9 figures

Published
2023

5. The geometry of the hot corona in MCG-05-23-16 constrained by X-ray polarimetry

Author

Tagliacozzo, D., Marinucci, A., Ursini, F., Matt, G., Bianchi, S., Baldini, L., Barnouin, T., Rodriguez, N. Cavero, De Rosa, A., Di Gesu, L., Dovciak, M., Harper, D., Ingram, A., Karas, V., Kim, D. E., Krawczynski, H., Madejski, G., Marin, F., Middei, R., Marshall, H. L., Muleri, F., Panagiotou, C., Petrucci, P. O., Podgorny, J., Poutanen, J., Puccetti, S., Soffitta, P., Tombesi, F., Veledina, A., Zhang, W., Agudo, I., Antonelli, L. A., Bachetti, M., Baumgartner, W. H., Bellazzini, R., Bongiorno, S. D., Bonino, R., Brez, A., Bucciantini, N., Capitanio, F., Castellano, S., Cavazzuti, E., Chen, C. T., Ciprini, S., Costa, E., Del Monte, E., Di Lalla, N., Di Marco, A., Donnarumma, I., Doroshenko, V., Ehlert, S. R., Enoto, T., Evangelista, Y., Fabiani, S., Ferrazzoli, R., Garcia, J. A., Gunji, S., Heyl, J., Iwakiri, W., Jorstad, S. G., Kaaret, P., Kislat, F., Kitaguchi, T., Kolodziejczak, J. J., La Monaca, F., Latronico, L., Liodakis, I., Maldera, S., Manfreda, A., Marscher, A. P., Massaro, F., Mitsuishi, I., Mizuno, T., Negro, M., Ng, C. Y., O'Dell, S. L., Omodei, N., Oppedisano, C., Papitto, A., Pavlov, G. G., Peirson, A. L., Perri, M., Rollins, M. Pesce, Pilia, M., Possenti, A., Ramsey, B. D., Rankin, J., Ratheesh, A., Roberts, O. J., Romani, R. W., Sgrò, C., Slane, P., Spandre, G., Swartz, D. A., Tamagawa, T., Tavecchio, F., Taverna, R., Tawara, Y., Tennant, A. F., Thomas, N. E., Trois, A., Tsygankov, S. S., Turolla, R., Vink, J., Weisskopf, M. C., Wu, K., Xie, F., and Zane, S.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

We report on the second observation of the radio-quiet active galactic nucleus (AGN) MCG-05-23-16 performed with the Imaging X-ray Polarimetry Explorer (IXPE). The observation started on 2022 November 6 for a net observing time of 640 ks, and was partly simultaneous with NuSTAR (86 ks). After combining these data with those obtained in the first IXPE pointing on May 2022 (simultaneous with XMM-Newton and NuSTAR) we find a 2-8 keV polarization degree $\Pi$ = 1.6 $\pm$ 0.7 (at 68 per cent confidence level), which corresponds to an upper limit $\Pi$ = 3.2 per cent (at 99 per cent confidence level). We then compare the polarization results with Monte Carlo simulations obtained with the MONK code, with which different coronal geometries have been explored (spherical lamppost, conical, slab and wedge). Furthermore, the allowed range of inclination angles is found for each geometry. If the best fit inclination value from a spectroscopic analysis is considered, a cone-shaped corona along the disc axis is disfavoured., Comment: 9 pages, 8 figures, 3 table. Submitted to MNRAS

Published
2023

6. X-ray polarimetry of X-ray pulsar X Persei: another orthogonal rotator?

Author

Mushtukov, A. A., Tsygankov, S. S., Poutanen, J., Doroshenko, V., Salganik, A., Costa, E., Di Marco, A., Heyl, J., La Monaca, F., Lutovinov, A. A., Mereminsky, I. A., Papitto, A., Semena, A. N., Shtykovsky, A. E., Suleimanov, V. F., Forsblom, S. V., González-Caniulef, D., Malacaria, C., Sunyaev, R. A., Agudo, I., Antonelli, L. A., Bachetti, M., Baldini, L., Baumgartner, W. H., Bellazzini, R., Bianchi, S., Bongiorno, S. D., Bonino, R., Brez, A., Bucciantini, N., Capitanio, F., Castellano, S., Cavazzuti, E., Chen, C. -T., Ciprini, S., De Rosa, A., Del Monte, E., Di Gesu, L., Di Lalla, N., Donnarumma, I., Dovčiak, M., Ehlert, S. R., Enoto, T., Evangelista, Y., Fabiani, S., Ferrazzoli, R., Garcia, J. A., Gunji, S., Hayashida, K., Iwakiri, W., Jorstad, S. G., Kaaret, P., Karas, V., Kislat, F., Kitaguchi, T., Kolodziejczak, J. J., Krawczynski, H., Latronico, L., Liodakis, I., Maldera, S., Manfreda, A., Marin, F., Marscher, A. P., Marshall, H. L., Massaro, F., Matt, G., Mitsuishi, I., Mizuno, T., Muleri, F., Negro, M., Ng, C. -Y., O'Dell, S. L., Omodei, N., Oppedisano, C., Pavlov, G. G., Peirson, A. L., Perri, M., Pesce-Rollins, M., Petrucci, P. -O., Pilia, M., Possenti, A., Puccetti, S., Ramsey, B. D., Rankin, J., Ratheesh, A., Roberts, O. J., Romani, R. W., Sgrò, C., Slane, P., Soffitta, P., Spandre, G., Swartz, D. A., Tamagawa, T., Tavecchio, F., Taverna, R., Tawara, Y., Tennant, A. F., Thomas, N. E., Tombesi, F., Trois, A., Turolla, R., Vink, J., Weisskopf, M. C., Wu, K., Xie, F., and Zane, S.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Solar and Stellar Astrophysics
Abstract

X Persei is a persistent low-luminosity X-ray pulsar of period of $\sim$835 s in a Be binary system. The field strength at the neutron star surface is not known precisely, but indirect signs indicate a magnetic field above $10^{13}$ G, which makes the object one of the most magnetized known X-ray pulsars. Here we present the results of observations X Persei performed with the Imaging X-ray Polarimetry Explorer (IXPE). The X-ray polarization signal was found to be strongly dependent on the spin phase of the pulsar. The energy-averaged polarization degree in 3-8 keV band varied from several to $\sim$20 per cent over the pulse with a positive correlation with the pulsed X-ray flux. The polarization angle shows significant variation and makes two complete revolutions during the pulse period resulting in nearly nil pulse-phase averaged polarization. Applying the rotating vector model to the IXPE data we obtain the estimates for the rotation axis inclination and its position angle on the sky as well as for the magnetic obliquity. The derived inclination is close to the orbital inclination reported earlier for X Persei. The polarimetric data imply a large angle between the rotation and magnetic dipole axes, which is similar to the result reported recently for the X-ray pulsar GRO J1008$-$57. After eliminating the effect of polarization angle rotation over the pulsar phase using the best-fitting rotating vector model, the strong dependence of the polarization degree with energy was discovered with its value increasing from 0% at $\sim$2 keV to 30% at 8 keV., Comment: 11 pages, 7 figures, submitted to MNRAS

Published
2023
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7. Uncovering the geometry of the hot X-ray corona in the Seyfert galaxy NGC4151 with IXPE

Author

Gianolli, V. E., Kim, D. E., Bianchi, S., Agís-González, B., Madejski, G., Marin, F., Marinucci, A., Matt, G., Middei, R., Petrucci, P-O., Soffitta, P., Tagliacozzo, D., Tombesi, F., Ursini, F., Barnouin, T., De Rosa, A., Di Gesu, L., Ingram, A., Loktev, V., Panagiotou, C., Podgorny, J., Poutanen, J., Puccetti, S., Ratheesh, A., Veledina, A., Zhang, W., Agudo, I., Antonelli, L. A., Bachetti, M., Baldini, L., Baumgartner, W. H., Bellazzini, R., Bongiorno, S. D., Bonino, R., Brez, A., Bucciantini, N., Capitanio, F., Castellano, S., Cavazzuti, E., Chen, C. -T., Ciprini, S., Costa, E., Del Monte, E., Di Lalla, N., Di Marco, A., Donnarumma, I., Doroshenko, V., Dovčiak, M., Ehlert, S. R., Enoto, T., Evangelista, Y., Fabiani, S., Ferrazzoli, R., García, J. A., Gunji, S., Heyl, J., Iwakiri, W., Jorstad, S. G., Kaaret, P., Karas, V., Kislat, F., Kitaguchi, T., Kolodziejczak, J. J., Krawczynski, H., La Monaca, F., Latronico, L., Liodakis, I., Maldera, S., Manfreda, A., Marscher, A. P., Marshall, H. L., Massaro, F., Mitsuishi, I., Mizuno, T., Muleri, F., Negro, M., Ng, C. -Y., ODell, S. L., Omodei, N., Oppedisano, C., Papitto, A., Pavlov, G. G., Peirson, A. L., Perri, M., Pesce-Rollins, M., Pilia, M., Possenti, A., Ramsey, B. D., Rankin, J., Roberts, O. J., Romani, R. W., Sgrò, C., Slane, P., Spandre, G., Swartz, D. A., Tamagawa, T., Tavecchio, F., Taverna, R., Tawara, Y., Tennant, A. F., Thomas, N. E., Trois, A., Tsygankov, S. S., Turolla, R., Vink, J., Weisskopf, M. C., Wu, K., Xie, F., and Zane, S.

Subjects
Astrophysics - Astrophysics of Galaxies, Astrophysics - High Energy Astrophysical Phenomena
Abstract

We present an X-ray spectro-polarimetric analysis of the bright Seyfert galaxy NGC4151. The source has been observed with the Imaging X-ray Polarimetry Explorer (IXPE) for 700 ks, complemented with simultaneous XMM-Newton (50 ks) and NuSTAR (100 ks) pointings. A polarization degree ${\Pi} = 4.9 {\pm} 1.1 \%$ and angle ${\Psi}= 86{\deg} {\pm} 7{\deg}$ east of north ($68\%$ confidence level) are measured in the 2-8 keV energy range. The spectro-polarimetric analysis shows that the polarization could be entirely due to reflection. Given the low reflection flux in the IXPE band, this requires however a reflection with a very large ($> 38 \%$) polarization degree. Assuming more reasonable values, a polarization degree of the hot corona ranging from ${\sim}4$ to ${\sim}8\%$ is found. The observed polarization degree excludes a spherical lamppost geometry for the corona, suggesting instead a slab-like geometry, possibly a wedge, as determined via Monte Carlo simulations. This is further confirmed by the X-ray polarization angle, which coincides with the direction of the extended radio emission in this source, supposed to match the disc axis. NGC4151 is the first AGN with an X-ray polarization measure for the corona, illustrating the capabilities of X-ray polarimetry and IXPE in unveiling its geometry., Comment: 9 pages, 4 figures

Published
2023
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8. Accretion geometry of the neutron star low mass X-ray binary Cyg X-2 from X-ray polarization measurements

Author

Farinelli, R., Fabiani, S., Poutanen, J., Ursini, F., Ferrigno, C., Bianchi, S., Cocchi, M., Capitanio, F., De Rosa, A., Gnarini, A., Kislat, F., Matt, G., Mikusincova, R., Muleri, F., Agudo, I., Antonelli, L. A., Bachetti, M., Baldini, L., Baumgartner, W. H., Bellazzini, R., Bongiorno, S. D., Bonino, R., Brez, A., Bucciantini, N., Castellano, S., Cavazzuti, E., Ciprini, S., Costa, E., Del Monte, E., Di Gesu, L., Di Lalla, N., Di Marco, A., Donnarumma, I., Doroshenko, V., Dovčiak, M., Ehlert, S. R., Enoto, T., Evangelista, Y., Ferrazzoli, R., Garcia, J. A., Gunji, S., Hayashida, K., Heyl, J., Iwakiri, W., Jorstad, S. G., Karas, V., Kitaguchi, T., Kolodziejczak, J. J., Krawczynski, H., La Monaca, F., Latronico, L., Liodakis, I., Maldera, S., Manfreda, A., Marin, F., Marscher, A. P., Marshall, H. L., Mitsuishi, I., Mizuno, T., Ng, C. -Y., O'Dell, S. L., Omodei, N., Oppedisano, C., Papitto, A., Pavlov, G. G., Peirson, A. L., Perri, M., Pesce-Rollins, M., Petrucci, P. O., Pilia, M., Possenti, A., Puccetti, S., Ramsey, B. D., Rankin, J., Ratheesh, A., Romani, R. W., Sgrò, C., Slane, P., Soffitta, P., Spandre, G., Tamagawa, T., Tavecchio, F., Taverna, R., Tawara, Y., Tennant, A. F., Thomas, N. E., Tombesi, F., Trois, A., Tsygankov, S. S., Turolla, R., Vink, J., Weisskopf, M. C., Wu, K., Xie, F., and Zane, S.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

We report spectro-polarimetric results of an observational campaign of the bright neutron star low-mass X-ray binary Cyg X-2 simultaneously observed by IXPE, NICER and INTEGRAL. Consistently with previous results, the broad-band spectrum is characterized by a lower-energy component, attributed to the accretion disc with $kT_{\rm in} \approx$ 1 keV, plus unsaturated Comptonization in thermal plasma with temperature $kT_{\rm e} = 3$ keV and optical depth $\tau \approx 4$, assuming a slab geometry. We measure the polarization degree in the 2-8 keV band $P=1.8 \pm 0.3$ per cent and polarization angle $\phi = 140^{\circ} \pm 4^{\circ}$, consistent with the previous X-ray polarimetric measurements by OSO-8 as well as with the direction of the radio jet which was earlier observed from the source. While polarization of the disc spectral component is poorly constrained with the IXPE data, the Comptonized emission has a polarization degree $P =4.0 \pm 0.7$ per cent and a polarization angle aligned with the radio jet. Our results strongly favour a spreading layer at the neutron star surface as the main source of the polarization signal. However, we cannot exclude a significant contribution from reflection off the accretion disc, as indicated by the presence of the iron fluorescence line., Comment: 10 pages, 7 figures, accepted for publication in MNRAS

Published
2022
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9. Mapping the circumnuclear regions of the Circinus galaxy with the Imaging X-ray Polarimetry Explorer

Author

Ursini, F., Marinucci, A., Matt, G., Bianchi, S., Marin, F., Marshall, H. L., Middei, R., Poutanen, J., Rogantini, D., De Rosa, A., Di Gesu, L., García, J. A., Ingram, A., Kim, D. E., Krawczynski, H., Puccetti, S., Soffitta, P., Svoboda, J., Tombesi, F., Weisskopf, M. C., Barnouin, T., Perri, M., Podgorny, J., Ratheesh, A., Zaino, A., Agudo, I., Antonelli, L. A., Bachetti, M., Baldini, L., Baumgartner, W. H., Bellazzini, R., Bongiorno, S. D., Bonino, R., Brez, A., Bucciantini, N., Capitanio, F., Castellano, S., Cavazzuti, E., Ciprini, S., Costa, E., Del Monte, E., Di Lalla, N., Di Marco, A., Donnarumma, I., Doroshenko, V., Dovčiak, M., Ehlert, S. R., Enoto, T., Evangelista, Y., Fabiani, S., Ferrazzoli, R., Gunji, S., Heyl, J., Iwakiri, W., Jorstad, S. G., Karas, V., Kitaguchi, T., Kolodziejczak, J. J., La Monaca, F., Latronico, L., Liodakis, I., Maldera, S., Manfreda, A., Marscher, A. P., Mitsuishi, I., Mizuno, T., Muleri, F., Ng, C. Y., O'Dell, S. L., Omodei, N., Oppedisano, C., Papitto, A., Pavlov, G. G., Peirson, A. L., Pesce-Rollins, M., Petrucci, P. -O., Pilia, M., Possenti, A., Ramsey, B. D., Rankin, J., Romani, R. W., Sgrò, C., Slane, P., Spandre, G., Tamagawa, T., Tavecchio, F., Taverna, R., Tawara, Y., Tennant, A. F., Thomas, N. E., Trois, A., Tsygankov, S. S., Turolla, R., Vink, J., Wu, K., Xie, F., and Zane, S.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

We report on the Imaging X-ray Polarimetry Explorer (IXPE) observation of the closest and X-ray brightest Compton-thick active galactic nucleus (AGN), the Circinus galaxy. We find the source to be significantly polarized in the 2--6 keV band. From previous studies, the X-ray spectrum is known to be dominated by reflection components, both neutral (torus) and ionized (ionization cones). Our analysis indicates that the polarization degree is $28 \pm 7$ per cent (at 68 per cent confidence level) for the neutral reflector, with a polarization angle of $18{\deg} \pm 5{\deg}$, roughly perpendicular to the radio jet. The polarization of the ionized reflection is unconstrained. A comparison with Monte Carlo simulations of the polarization expected from the torus shows that the neutral reflector is consistent with being an equatorial torus with a half-opening angle of 45{\deg}-55{\deg}. This is the first X-ray polarization detection in a Seyfert galaxy, demonstrating the power of X-ray polarimetry in probing the geometry of the circumnuclear regions of AGNs, and confirming the basic predictions of standard Unification Models., Comment: 9 pages, accepted for publication in MNRAS, authors list updated

Published
2022
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10. Polarization constraints on the X-ray corona in Seyfert Galaxies: MCG-05-23-16

Author

Marinucci, A., Muleri, F., Dovčiak, M., Bianchi, S., Marin, F., Matt, G., Ursini, F., Middei, R., Marshall, H. L., Baldini, L., Barnouin, T., Rodriguez, N. Cavero, De Rosa, A., Di Gesu, L., Harper, D., Ingram, A., Karas, V., Krawczynski, H., Madejski, G., Panagiotou, C., Petrucci, P. O., Podgorny, J., Puccetti, S., Tombesi, F., Veledina, A., Zhang, W., Agudo, I., Antonelli, L. A., Bachetti, M., Baumgartner, W. H., Bellazzini, R., Bongiorno, S. D., Bonino, R., Brez, A., Bucciantini, N., Capitanio, F., Castellano, S., Cavazzuti, E., Ciprini, S., Costa, E., Del Monte, E., Di Lalla, N., Di Marco, A., Donnarumma, I., Doroshenko, V., Ehlert, S. R., Enoto, T., Evangelista, Y., Fabiani, S., Ferrazzoli, R., Garcia, J. A., Gunji, S., Hayashida, K., Heyl, J., Iwakiri, W., Jorstad, S. G., Kitaguchi, T., Kolodziejczak, J. J., La Monaca, F., Latronico, L., Liodakis, I., Maldera, S., Manfreda, A., Marscher, A. P., Mitsuishi, I., Mizuno, T., Ng, C. -Y., O'Dell, S. L., Omodei, N., Oppedisano, C., Papitto, A., Pavlov, G. G., Peirson, A. L., Perri, M., Pesce-Rollins, M., Pilia, M., Possenti, A., Poutanen, J., Ramsey, B. D., Rankin, J., Ratheesh, A., Romani, R. W., Sgrò, C., Slane, P., Soffitta, P., Spandre, G., Tamagawa, T., Tavecchio, F., Taverna, R., Tawara, Y., Tennant, A. F., Thomas, N. E., Trois, A., Tsygankov, S. S., Turolla, R., Vink, J., Weisskopf, M. C., Wu, K., Xie, F., and Zane, S.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

We report on the first observation of a radio-quiet Active Galactic Nucleus (AGN) using polarized X-rays: the Seyfert 1.9 galaxy MCG-05-23-16. This source was pointed with the Imaging X-ray Polarimetry Explorer (IXPE) starting on May 14, 2022 for a net observing time of 486 ks, simultaneously with XMM-Newton (58 ks) and NuSTAR (83 ks). A polarization degree smaller than $\Pi<4.7\%$ (at the 99% c.l.) is derived in the 2-8 keV energy range, where emission is dominated by the primary component ascribed to the hot corona. The broad-band spectrum, inferred from a simultaneous fit to the IXPE, NuSTAR, and XMM-Newton data, is well reproduced by a power law with photon index $\Gamma=1.85\pm0.01$ and a high-energy cutoff $E_{\rm C}=120\pm15$ keV. A comparison with Monte Carlo simulations shows that a lamp-post and a conical geometry of the corona are consistent with the observed upper limit, a slab geometry is allowed only if the inclination angle of the system is less than 50$^{\circ}$., Comment: 7 pages, 3 figures, 1 table. Submitted to MNRAS Letters

Published
2022
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11. Design, Construction, and Test of the Gas Pixel Detectors for the IXPE Mission

Author

Baldini, L., Barbanera, M., Bellazzini, R., Bonino, R., Borotto, F., Brez, A., Caporale, C., Cardelli, C., Castellano, S., Ceccanti, M., Citraro, S., Di Lalla, N., Latronico, L., Lucchesi, L., Magazzù, C., Magazzù, G., Maldera, S., Manfreda, A., Marengo, M., Marrocchesi, A., Mereu, P., Minuti, M., Mosti, F., Nasimi, H., Nuti, A., Oppedisano, C., Orsini, L., Pesce-Rollins, M., Pinchera, M., Profeti, A., Sgrò, C., Spandre, G., Tardiola, M., Zanetti, D., Amici, F., Andersson, H., Attinà, P., Bachetti, M., Baumgartner, W., Brienza, D., Carpentiero, R., Castronuovo, M., Cavalli, L., Cavazzuti, E., Centrone, M., Costa, E., D'Alba, E., D'Amico, F., Del Monte, E., Di Cosimo, S., Di Marco, A., Di Persio, G., Donnarumma, I., Evangelista, Y., Fabiani, S., Ferrazzoli, R., Kitaguchi, T., La Monaca, F., Lefevre, C., Loffredo, P., Lorenzi, P., Mangraviti, E., Matt, G., Meilahti, T., Morbidini, A., Muleri, F., Nakano, T., Negri, B., Nenonen, S., O'Dell, S. L., Perri, M., Piazzolla, R., Pieraccini, S., Pilia, M., Puccetti, S., Ramsey, B. D., Rankin, J., Ratheesh, A., Rubini, A., Santoli, F., Sarra, P., Scalise, E., Sciortino, A., Soffitta, P., Tamagawa, T., Tennant, A. F., Tobia, A., Trois, A., Uchiyama, K., Vimercati, M., Weisskopf, M. C., Xie, F., Zanetti, F., and Zhou, Y.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Physics - Instrumentation and Detectors
Abstract

Due to be launched in late 2021, the Imaging X-Ray Polarimetry Explorer (IXPE) is a NASA Small Explorer mission designed to perform polarization measurements in the 2-8 keV band, complemented with imaging, spectroscopy and timing capabilities. At the heart of the focal plane is a set of three polarization-sensitive Gas Pixel Detectors (GPD), each based on a custom ASIC acting as a charge-collecting anode. In this paper we shall review the design, manufacturing, and test of the IXPE focal-plane detectors, with particular emphasis on the connection between the science drivers, the performance metrics and the operational aspects. We shall present a thorough characterization of the GPDs in terms of effective noise, trigger efficiency, dead time, uniformity of response, and spectral and polarimetric performance. In addition, we shall discuss in detail a number of instrumental effects that are relevant for high-level science analysis -- particularly as far as the response to unpolarized radiation and the stability in time are concerned., Comment: To be published in Astroparticle Physics

Published
2021
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12. Performance of the ReD TPC, a novel double-phase LAr detector with Silicon Photomultiplier Readout

Author

Agnes, P., Albergo, S., Albuquerque, I., Arba, M., Ave, M., Boiano, A., Bonivento, W. M., Bottino, B., Bussino, S., Cadeddu, M., Caminata, A., Canci, N., Cappello, G., Caravati, M., Cariello, M., Castellano, S., Catalanotti, S., Cataudella, V., Cereseto, R., Cesarano, R., Cicalò, C., Covone, G., de Candia, A., De Filippis, G., De Rosa, G., Davini, S., Dionisi, C., Dolganov, G., Fiorillo, G., Franco, D., Giovanetti, G. K., Galbiati, C., Gulino, M., Ippolito, V., Kemmerich, N., Kochanek, I., Korga, G., Kuss, M., La Commara, M., La Delfa, L., Leyton, M., Li, X., Lissia, M., Mari, S. M., Martoff, C. J., Masone, V., Matteucci, G., Musico, P., Oleynikov, V., Pallavicini, M., Pandola, L., Razeto, A., Rescigno, M., Rode, J., Rossi, N., Sablone, D., Sanfilippo, S., Scapparone, E., Sosa, A., Suvorov, Y., Testera, G., Tricomi, A., Tuveri, M., Wada, M., Wang, H., Wang, Y., and Westerdale, S.

Subjects
Physics - Instrumentation and Detectors
Abstract

A double-phase argon Time Projection Chamber (TPC), with an active mass of 185 g, has been designed and constructed for the Recoil Directionality (ReD) experiment. The aim of the ReD project is to investigate the directional sensitivity of argon-based TPCs via columnar recombination to nuclear recoils in the energy range of interest (20-200 keV$_{nr}$) for direct dark matter searches. The key novel feature of the ReD TPC is a readout system based on cryogenic Silicon Photomultipliers, which are employed and operated continuously for the first time in an argon TPC. Over the course of six months, the ReD TPC was commissioned and characterised under various operating conditions using $\gamma$-ray and neutron sources, demonstrating remarkable stability of the optical sensors and reproducibility of the results. The scintillation gain and ionisation amplification of the TPC were measured to be $g_1 = (0.194 \pm 0.013)$ PE/photon and $g_2 = (20.0 \pm 0.9)$ PE/electron, respectively. The ratio of the ionisation to scintillation signals (S2/S1), instrumental for the positive identification of a candidate directional signal induced by WIMPs, has been investigated for both nuclear and electron recoils. At a drift field of 183 V/cm, an S2/S1 dispersion of 12% was measured for nuclear recoils of approximately 60-90 keV$_{nr}$, as compared to 18% for electron recoils depositing 60 keV of energy. The detector performance reported here meets the requirements needed to achieve the principal scientific goals of the ReD experiment in the search for a directional effect due to columnar recombination. A phenomenological parameterisation of the recombination probability in LAr is presented and employed for modeling the dependence of scintillation quenching and charge yield on the drift field for electron recoils between 50-500 keV and fields up to 1000 V/cm., Comment: 19 pages, 19 figures, prepared for submission to EPJ C

Published
2021
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13. X-ray polarization measurement of the gold standard of radio-quiet active galactic nuclei: NGC 1068

Author

Marin, F., primary, Marinucci, A., additional, Laurenti, M., additional, Kim, D.E., additional, Barnouin, T., additional, Di Marco, A., additional, Ursini, F., additional, Bianchi, S., additional, Ravi, S., additional, Marshall, H.L., additional, Matt, G., additional, Chen, C.-T., additional, Gianolli, V.E., additional, Ingram, A., additional, Middei, R., additional, Maksym, W.P., additional, Panagiotou, C., additional, Podgorny, J., additional, Puccetti, S., additional, Ratheesh, A., additional, Tombesi, F., additional, Agudo, I., additional, Antonelli, L.A., additional, Bachetti, M., additional, Baldini, L., additional, Baumgartner, W., additional, Bellazzini, R., additional, Bongiorno, S., additional, Bonino, R., additional, Brez, A., additional, Bucciantini, N., additional, Capitanio, F., additional, Castellano, S., additional, Cavazzuti, E., additional, Ciprini, S., additional, Costa, E., additional, De Rosa, A., additional, Del Monte, E., additional, Di Gesu, L., additional, Di Lalla, N., additional, Donnarumma, I., additional, Doroshenko, V., additional, Dovčiak, M., additional, Ehlert, S., additional, Enoto, T., additional, Evangelista, Y., additional, Fabiani, S., additional, Ferrazzoli, R., additional, Garcia, J., additional, Gunji, S., additional, Heyl, J., additional, Iwakiri, W., additional, Jorstad, S., additional, Kaaret, P., additional, Karas, V., additional, Kislat, F., additional, Kitaguchi, T., additional, Kolodziejczak, J., additional, Krawczynski, H., additional, La Monaca, F., additional, Latronico, L., additional, Liodakis, I., additional, Madejski, G., additional, Maldera, S., additional, Manfreda, A., additional, Marscher, A., additional, Massaro, F., additional, Mitsuishi, I., additional, Mizuno, T., additional, Muleri, F., additional, Negro, M., additional, Ng, S., additional, O'Dell, S., additional, Omodei, N., additional, Oppedisano, C., additional, Papitto, A., additional, Pavlov, G., additional, Perri, M., additional, Pesce-Rollins, M., additional, Petrucci, P.-O., additional, Pilia, M., additional, Possenti, A., additional, Poutanen, J., additional, Ramsey, B., additional, Rankin, J., additional, Roberts, O., additional, Romani, R., additional, Sgrò, C., additional, Slane, P., additional, Soffitta, P., additional, Spandre, G., additional, Swartz, D., additional, Tamagawa, T., additional, Tavecchio, F., additional, Taverna, R., additional, Tawara, Y., additional, Tennant, A., additional, Thomas, N., additional, Trois, A., additional, Tsygankov, S., additional, Turolla, R., additional, Vink, J., additional, Weisskopf, M., additional, Wu, K., additional, Xie, F., additional, and Zane, S., additional

Published
2024
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14. Sex, cholesterol and machine learning

Author

Rubio Lanchas, S., primary, Villar Vázquez, C., additional, Trapiello Fernández, W., additional, Velasco De Cos, G., additional, Herrero Castellano, S., additional, Aníbarro Miralles, I., additional, Mayán Santos, L., additional, Calvo Nieves, M.D., additional, Vidriales Vicente, I., additional, Aguirre Guervás, B., additional, Marcos Sánchez, H., additional, and Guerrero Peral, A.B., additional

Published
2024
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15. Scales in cerebrospinal fluid

Author

Rubio Lanchas, S., primary, Valentín Cid, J., additional, Vidriales Vicente, I., additional, Velasco De Cos, G., additional, Calvo Nieves, M.D., additional, Mayán Santos, L., additional, Trapiello Fernández, W., additional, Aníbarro Miralles, I., additional, Herrero Castellano, S., additional, Guerrero Peral, A.B., additional, Marcos Sánchez, H., additional, and Aguirre Gervas, B., additional

Published
2024
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16. Non-classical promyelocytic leukemia. A case report

Author

Mayán Santos, L., primary, Rubio Lanchas, S., additional, Herrero Castellano, S., additional, Anibarro Miralles, I., additional, Trapiello Fernández, W., additional, Velasco De Cos, G., additional, Gómez García, L., additional, and Vidriales Vicente, M.I., additional

Published
2024
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17. The machine learning models compete for LDL-C cholesterol

Author

Rubio Lanchas, S., primary, Velasco De Cos, G., additional, Villar Vázquez, C., additional, Trapiello Fernández, W., additional, Aníbarro Miralles, I., additional, Herrero Castellano, S., additional, Mayán Santos, L., additional, Guerrero Peral, A.B., additional, Calvo Nieves, M.D., additional, Vidriales Vicente, I., additional, Aguirre Guervás, B., additional, and Marcos Sánchez, H., additional

Published
2024
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21. Model independent result on possible diurnal effect in DAMA/LIBRA-phase1

Author

Bernabei, R., Belli, P., Cappella, F., Caracciolo, V., Castellano, S., Cerulli, R., Dai, C. J., d'Angelo, A., d'Angelo, S., Di Marco, A., He, H. L., Incicchitti, A., Kuang, H. H., Ma, X. H., Montecchia, F., Prosperi, D., Sheng, X. D., Wang, R. G., and Ye, Z. P.

Subjects
Astrophysics - Astrophysics of Galaxies, Astrophysics - Instrumentation and Methods for Astrophysics, High Energy Physics - Experiment
Abstract

The results obtained in the search for possible diurnal effect in the single-hit low energy data collected by DAMA/LIBRA-phase1 (total exposure: 1.04 ton x yr) deep underground at the Gran Sasso National Laboratory (LNGS) of the I.N.F.N. are presented. At the present level of sensitivity the presence of any significant diurnal variation and of diurnal time structures in the data can be excluded for both the cases of solar and sidereal time. In particular, the diurnal modulation amplitude expected, because of the Earth diurnal motion, on the basis of the DAMA Dark Matter annual modulation results is below the present sensitivity., Comment: 14 pages, 5 figures, 2 tables; in publication on Eur. Phys. J. C

Published
2014
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22. DAMA/LIBRA results and perspectives, Bled 2013

Author

Bernabei, R., Belli, P., d'Angelo, S., Di Marco, A., Montecchia, F., Cappella, F., d'Angelo, A., Incicchitti, A., Caracciolo, V., Castellano, S., Cerulli, R., Dai, C. J., He, H. L., Ma, X. H., Sheng, X. D., Wang, R. G., and Ye, Z. P.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

The DAMA/LIBRA experiment is composed by about 250 kg of highly radiopure NaI(Tl). It is in operation at the underground Gran Sasso National Laboratory of the INFN. The main aim of the experiment is to investigate the Dark Matter (DM) particles in the Galactic halo by exploiting the model independent DM annual modulation signature. The DAMA/LIBRA experiment and the former DAMA/NaI (the first generation experiment having an exposed mass of about 100 kg) have released results corresponding to a total exposure of 1.17 ton $\times$ yr over 13 annual cycles; they have provided a model independent evidence of the presence of DM particles in the galactic halo at 8.9 $\sigma$ C.L.. The results of a further annual cycle, concluding the DAMA/LIBRA--phase1, have been released after this Workshop and are not included here. In the fall 2010 an important upgrade of the experiment have been performed. All the PMTs of the NaI(Tl) detectors have been replaced with new ones having higher quantum efficiency with the aim to decrease the software energy threshold considered in the data analysis. The perspectives of the running DAMA/LIBRA--phase2 will be shortly summarized., Comment: Appeared in Proceedings to the 16th Workshop "What Comes Beyond the Standard Models?", Bled 14-21 of July 2013, Vol. 14, No. 2, DMFA Zaloznistvo, Ljubljana, Dec. 2013

Published
2014
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23. Search for 2{\beta} decay of 116Cd with the help of enriched 116CdWO4 crystal scintillators

Author

Poda, D. V., Barabash, A. S., Belli, P., Bernabei, R., Cappella, F., Caracciolo, V., Castellano, S., Chernyak, D. M., Cerulli, R., Danevich, F. A., d'Angelo, S., Incicchitti, A., Kobychev, V. V., Konovalov, S. I., Laubenstein, M., Podviyanuk, R. B., Polischuk, O. G., Shlegel, V. N., Tretyak, V. I., Umatov, V. I., and Vasiliev, Ya. V.

Subjects
Nuclear Experiment, Physics - Instrumentation and Detectors
Abstract

Cadmium tungstate crystal scintillators enriched in $^{116}$Cd to 82% ($^{116}$CdWO$_4$, total mass of $\approx$1.2 kg) are used to search for 2$\beta$ decay of $^{116}$Cd deep underground at the Gran Sasso National Laboratory of the INFN (Italy). The radioactive contamination of the $^{116}$CdWO$_4$ crystals has been studied carefully to reconstruct the background of the detector. The measured half-life of $^{116}$Cd relatively to 2$\nu$2$\beta$ decay is $T^{2\nu2\beta}_{1/2}$ = [2.8 $\pm$ 0.05(stat.) $\pm$ 0.4(syst.)] $\times$ 10$^{19}$ yr, in agreement with the results of previous experiments. The obtained limit on the 0$\nu$2$\beta$ decay of $^{116}$Cd (considering the data of the last 8696 h run with an advanced background 0.12(2) counts/yr/kg/keV in the energy interval 2.7-2.9 MeV) is $T_{1/2} \ge 1.0 \times 10^{23}$ yr at 90% C.L. The sensitivity of the experiment to the $0\nu2\beta$ process is $\lim T_{1/2} = 3 \times 10^{23}$ yr at 90% C.L. over 5 years of the measurements and it can be advanced (by further reduction of the background by a factor 3-30) to the level of $\lim T_{1/2} = (0.5-1.5) \times 10^{24}$ yr for the same period of the data taking., Comment: Contribution to Proc. of Int. Workshop on Radiopure Scintillators RPSCINT 2013, 17-20.09.2013, Kyiv, Ukraine; to be published in EPJ Web of Conferences; 4 pages, 1 figure and 3 tables

Published
2013
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24. Clinical and Neurocognitive Predictors of Functional Outcome in Depressed Patients with Partial Response to Treatment: One Year Follow-Up Study

Author

Castellano S, Torrent C, Petralia MC, Godos J, Cantarella RA, Ventimiglia A, De Vivo S, Platania S, Guarnera M, Pirrone C, Drago F, Vieta E, Di Nuovo S, Popovic D, and Caraci F

Subjects
major depression, ssri, snri, cognition, psychometric tools, antidepressant drugs, Neurosciences. Biological psychiatry. Neuropsychiatry, RC321-571, Neurology. Diseases of the nervous system, RC346-429
Abstract

Sabrina Castellano,1 Carla Torrent,2 Maria Cristina Petralia,3 Justyna Godos,4 Rita Anna Cantarella,5 Andrea Ventimiglia,6 Simona De Vivo,6 Silvia Platania,1 Maria Guarnera,7 Concetta Pirrone,1 Filippo Drago,4 Eduard Vieta,2 Santo Di Nuovo,1 Dina Popovic,2,8,* Filippo Caraci4,9,* 1Department of Educational Sciences, University of Catania, Catania, Italy; 2Barcelona Bipolar Disorders Program, Institute of Neurosciences, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Catalonia, Spain; 3IRCCS Centro Neurolesi Bonino Pulejo, Messina, Italy; 4Oasi Research Institute-IRCCS, Troina 94018, Italy; 5Department of Mental Health, ASP3 Catania, Catania, Italy; 6Villa dei Gerani Clinic ASP3 Catania, Catania, Italy; 7Faculty of Human and Social Sciences, University of Enna “KORE”, Enna, Italy; 8Bipolar Disorders Program, Sheba Medical Center, Ramat Gan, Israel; 9Department of Drug Sciences, University of Catania, Catania, Italy*These authors contributed equally to this workCorrespondence: Sabrina CastellanoDepartment of Educational Sciences, University of Catania, Via Ofelia 1, Catania 95124, ItalyTel +39 0952508060Fax +39 0952508070Email sabrina.castellano@unict.itBackground: Cognitive dysfunction represents a distinct biological and clinical dimension in major depression disorders (MDD) and cognitive performance strongly affects psychosocial functioning in patients diagnosed with MDD.Objective: To assess which neurocognitive variables at baseline predict the functional outcome of MDD patients in a 1-year follow-up study as assessed by Functioning Assessment Short Test (FAST) and whether the improvement observed on affective and cognitive symptoms in our 12 week-prospective observational study after treatment with selective serotonin reuptake inhibitors (SSRIs) and selective noradrenalin reuptake inhibitors (SNRIs) can affect the following long-term psychosocial functional outcome at 1 year in the same MDD patients.Methods: We recruited a total of 31 patients (8 males; 23 females) with MDD who had previously completed a pharmacological treatment with SSRIs (n = 22) or SNRIs (n = 9) for 12 weeks, and then continued the same pharmacological treatment for 1 year. After an average 1-year follow-up, they were interviewed with the FAST to assess functional outcome. Multivariate analyses were applied to identify clinical and neurocognitive predictors of functional outcome.Results: Total Montreal Cognitive Assessment (MoCA), Digit Span forward (Span F) and backward (Span B), and 15 Rey words immediate recall (Rey I) scores significantly correlated with FAST. However, after performing regression models only Rey immediate recall score was useful to predict long-term functional outcome (Pearson correlation coefficient R= − 0.68, p

Published
2020

25. Activation priming and cytokine polyfunctionality modulate the enhanced functionality of low-affinity CD19 CAR T cells

Author

Michelozzi, I, Gomez-Castaneda, E, Pohle, R, Rodriguez, F, Sufi, J, Costa, P, Subramaniyam, M, Kirtsios, E, Eddaoudi, A, Wu, S, Guvenel, A, Fisher, J, Ghorashian, S, Pule, M, Tape, C, Castellano, S, Amrolia, P, Giustacchini, A, Michelozzi I. M., Gomez-Castaneda E., Pohle R. V. C., Rodriguez F. C., Sufi J., Costa P. P., Subramaniyam M., Kirtsios E., Eddaoudi A., Wu S. W., Guvenel A., Fisher J., Ghorashian S., Pule M. A., Tape C. J., Castellano S., Amrolia P. J., Giustacchini A., Michelozzi, I, Gomez-Castaneda, E, Pohle, R, Rodriguez, F, Sufi, J, Costa, P, Subramaniyam, M, Kirtsios, E, Eddaoudi, A, Wu, S, Guvenel, A, Fisher, J, Ghorashian, S, Pule, M, Tape, C, Castellano, S, Amrolia, P, Giustacchini, A, Michelozzi I. M., Gomez-Castaneda E., Pohle R. V. C., Rodriguez F. C., Sufi J., Costa P. P., Subramaniyam M., Kirtsios E., Eddaoudi A., Wu S. W., Guvenel A., Fisher J., Ghorashian S., Pule M. A., Tape C. J., Castellano S., Amrolia P. J., and Giustacchini A.

Abstract

We recently described a low-affinity second-generation CD19 chimeric antigen receptor (CAR) CAT that showed enhanced expansion, cytotoxicity, and antitumor efficacy compared with the high-affinity (FMC63-based) CAR used in tisagenlecleucel, in preclinical models. Furthermore, CAT demonstrated an excellent toxicity profile, enhanced in vivo expansion, and long-term persistence in a phase 1 clinical study. To understand the molecular mechanisms behind these properties of CAT CAR T cells, we performed a systematic in vitro characterization of the transcriptomic (RNA sequencing) and protein (cytometry by time of flight) changes occurring in T cells expressing low-affinity vs high-affinity CD19 CARs following stimulation with CD19-expressing cells. Our results show that CAT CAR T cells exhibit enhanced activation to CD19 stimulation and a distinct transcriptomic and protein profile, with increased activation and cytokine polyfunctionality compared with FMC63 CAR T cells. We demonstrate that the enhanced functionality of low-affinity CAT CAR T cells is a consequence of an antigen-dependent priming induced by residual CD19-expressing B cells present in the manufacture.

Published
2023

26. Final model independent result of DAMA/LIBRA-phase1

Author

Bernabei, R., Belli, P., Cappella, F., Caracciolo, V., Castellano, S., Cerulli, R., Dai, C. J., d'Angelo, A., d'Angelo, S., Di Marco, A., He, H. L., Incicchitti, A., Kuang, H. H., Ma, X. H., Montecchia, F., Prosperi, D., Sheng, X. D., Wang, R. G., and Ye, Z. P.

Subjects
Astrophysics - Astrophysics of Galaxies, High Energy Physics - Experiment
Abstract

The results obtained with the total exposure of 1.04 ton x yr collected by DAMA/LIBRA-phase1 deep underground at the Gran Sasso National Laboratory (LNGS) of the I.N.F.N. during 7 annual cycles (i.e. adding a further 0.17 ton x yr exposure) are presented. The DAMA/LIBRA-phase1 data give evidence for the presence of Dark Matter (DM) particles in the galactic halo, on the basis of the exploited model independent DM annual modulation signature by using highly radio-pure NaI(Tl) target, at 7.5 sigma C.L.. Including also the first generation DAMA/NaI experiment (cumulative exposure 1.33 ton x yr, corresponding to 14 annual cycles), the C.L. is 9.3 sigma and the modulation amplitude of the single-hit events in the (2-6) keV energy interval is: (0.0112 \pm 0.0012) cpd/kg/keV; the measured phase is (144 \pm 7) days and the measured period is (0.998 \pm 0.002) yr, values well in agreement with those expected for DM particles. No systematic or side reaction able to mimic the exploited DM signature has been found or suggested by anyone over more than a decade., Comment: 20 pages, 13 figures, 6 tables; in publication on Eur. Phys. J. C

Published
2013
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27. Dark Matter investigation by DAMA at Gran Sasso

Author

Bernabei, R., Belli, P., d'Angelo, S., Di Marco, A., Montecchia, F., Cappella, F., d'Angelo, A., Incicchitti, A., Caracciolo, V., Castellano, S., Cerulli, R., Dai, C. J., He, H. L., Ma, X. H., Sheng, X. D., Wang, R. G., and Ye, Z. P.

Subjects
Astrophysics - Galaxy Astrophysics, High Energy Physics - Phenomenology
Abstract

Experimental observations and theoretical arguments at Galaxy and larger scales have suggested that a large fraction of the Universe is composed by Dark Matter particles. This has motivated the DAMA experimental efforts to investigate the presence of such particles in the galactic halo by exploiting a model independent signature and very highly radiopure set-ups deep underground. Few introductory arguments are summarized before presenting a review of the present model independent positive results obtained by the DAMA/NaI and DAMA/LIBRA set-ups at the Gran Sasso National Laboratory of the INFN. Implications and model dependent comparisons with other different kinds of results will be shortly addressed. Some arguments put forward in literature will be confuted., Comment: review article, 71 pages, 25 figures, 8 tables; v2: minor modifications. In publication on the International Journal of Modern Physics A

Published
2013
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28. New search for correlated e+e- pairs in the alpha decay of 241Am

Author

Bernabei, R., Belli, P., Cappella, F., Caracciolo, V., Castellano, S., Cerulli, R., Dai, C. J., d'Angelo, A., Di Marco, A., He, H. L., Incicchitti, A., Laubenstein, M., Ma, X. H., Montecchia, F., Sheng, X. D., Tretyak, V. I., Wang, R. G., and Ye, Z. P.

Subjects
Nuclear Experiment
Abstract

A new search for production of correlated e+e- pairs in the alpha decay of 241Am has been carried out deep underground at the Gran Sasso National Laboratory of the I.N.F.N. by using pairs of NaI(Tl) detectors of the DAMA/LIBRA set-up. The experimental data show an excess of double coincidences of events with energy around 511 keV in faced pairs of detectors, which are not explained by known side reactions. This measured excess gives a relative activity lambda = (4.70 \pm 0.63) \times 10^{-9} for the Internal Pair Production (IPP) with respect to alpha decay of 241Am; this value is of the same order of magnitude as previous determinations. In a conservative approach the upper limit lambda < 5.5 \times 10^{-9} (90% C.L.) can be derived. It is worth noting that this is the first result on IPP obtained in an underground experiment, and that the lambda value obtained in the present work is independent on the live-time estimate., Comment: 18 pages, 5 figures, 3 tables; version accepted for publication on Eur. Phys. J. A

Published
2013
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29. CdWO4 crystal scintillators from enriched isotopes for double beta decay experiments

Author

Poda, D. V., Barabash, A. S., Belli, P., Bernabei, R., Boiko, R. S., Brudanin, V. B., Cappella, F., Caracciolo, V., Castellano, S., Cerulli, R., Chernyak, D. M., Danevich, F. A., d'Angelo, S., Degoda, V. Ya., Di Vacri, M. L., Dossovitskiy, A. E., Galashov, E. N., Incicchitti, A., Kobychev, V. V., Konovalov, S. I., Kovtun, G. P., Laubenstein, M., Mikhlin, A. L., Mokina, V. M., Nikolaiko, A. S., Nisi, S., Podviyanuk, R. B., Polischuk, O. G., Shcherban, A. P., Shlegel, V. N., Solopikhin, D. A., Tretyak, V. I., Umatov, V. I., Vasiliev, Ya. V., and Virich, V. D.

Subjects
Physics - Instrumentation and Detectors, Nuclear Experiment
Abstract

Cadmium tungstate crystal scintillators enriched in 106Cd and 116Cd were developed. The produced scintillators exhibit good optical and scintillation properties, and a low level of radioactive contamination. Experiments to search for double beta decay of 106Cd and 116Cd are in progress at the Gran Sasso National Laboratories of the INFN (Italy). Prospects to further improve the radiopurity of the detectors by recrystallization are discussed., Comment: 9 pages, 1 figure (4 eps-figs), 1 table. Accepted for publication in Radiation Measurements as a Proceedings of the 8th International Conference on Luminescent Detectors and Transformers of Ionizing Radiation (LUMDETR 2012), September 09-14, 2012, Halle (Saale), Germany

Published
2013
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30. Ancient human genomes suggest three ancestral populations for present-day Europeans

Author

Mahley, Robert, Lazaridis, I, Patterson, N, Mittnik, A, Renaud, G, Mallick, S, Kirsanow, K, Sudmant, PH, Schraiber, JG, Castellano, S, and Lipson, M

Abstract

©2014 Macmillan Publishers Limited. All rights reserved.We sequenced the genomes of a ∼7,000-year-old farmer from Germany and eight ∼8,000-year-old hunter-gatherers from Luxembourg and Sweden. We analysed these and other ancient genomes1-4 with

Published
2014

31. The first X-ray polarimetric observation of the black hole binary LMC X-1

Author

Podgorný, J, primary, Marra, L, additional, Muleri, F, additional, Cavero, N Rodriguez, additional, Ratheesh, A, additional, Dovčiak, M, additional, Mikušincová, R, additional, Brigitte, M, additional, Steiner, J F, additional, Veledina, A, additional, Bianchi, S, additional, Krawczynski, H, additional, Svoboda, J, additional, Kaaret, P, additional, Matt, G, additional, García, J A, additional, Petrucci, P-O, additional, Lutovinov, A, additional, Semena, A, additional, Di Marco, A, additional, Negro, M, additional, Weisskopf, M C, additional, Ingram, A, additional, Poutanen, J, additional, Beheshtipour, B, additional, Chun, S, additional, Hu, K, additional, Mizuno, T, additional, Sixuan, Z, additional, Tombesi, F, additional, Zane, S, additional, Agudo, I, additional, Antonelli, L A, additional, Bachetti, M, additional, Baldini, L, additional, Baumgartner, W H, additional, Bellazzini, R, additional, Bongiorno, S D, additional, Bonino, R, additional, Brez, A, additional, Bucciantini, N, additional, Capitanio, F, additional, Castellano, S, additional, Cavazzuti, E, additional, Chen, C, additional, Ciprini, S, additional, Costa, E, additional, De Rosa, A, additional, Del Monte, E, additional, Di Gesu, L, additional, Di Lalla, N, additional, Donnarumma, I, additional, Doroshenko, V, additional, Ehlert, S R, additional, Enoto, T, additional, Evangelista, Y, additional, Fabiani, S, additional, Ferrazzoli, R, additional, Gunji, S, additional, Hayashida, K, additional, Heyl, J, additional, Iwakiri, W, additional, Jorstad, S G, additional, Karas, V, additional, Kislat, F, additional, Kitaguchi, T, additional, Kolodziejczak, J J, additional, Monaca, F La, additional, Latronico, L, additional, Liodakis, I, additional, Maldera, S, additional, Manfreda, A, additional, Marin, F, additional, Marinucci, A, additional, Marscher, A P, additional, Marshall, H L, additional, Massaro, F, additional, Mitsuishi, I, additional, Ng, C-Y, additional, O’Dell, S L, additional, Omodei, N, additional, Oppedisano, C, additional, Papitto, A, additional, Pavlov, G G, additional, Peirson, A L, additional, Perri, M, additional, Pesce-Rollins, M, additional, Pilia, M, additional, Possenti, A, additional, Puccetti, S, additional, Ramsey, B D, additional, Rankin, J, additional, Roberts, O J, additional, Romani, R W, additional, Sgró, C, additional, Slane, P, additional, Soffitta, P, additional, Spandre, G, additional, Swartz, D A, additional, Tamagawa, T, additional, Tavecchio, F, additional, Taverna, R, additional, Tawara, Y, additional, Tennant, A F, additional, Thomas, N E, additional, Trois, A, additional, Tsygankov, S S, additional, Turolla, R, additional, Vink, J, additional, Wu, K, additional, and Xie, F, additional

Published
2023
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32. The X-ray polarization of the Seyfert 1 galaxy IC 4329A

Author

Ingram, A, primary, Ewing, M, additional, Marinucci, A, additional, Tagliacozzo, D, additional, Rosario, D J, additional, Veledina, A, additional, Kim, D E, additional, Marin, F, additional, Bianchi, S, additional, Poutanen, J, additional, Matt, G, additional, Marshall, H L, additional, Ursini, F, additional, De Rosa, A, additional, Petrucci, P-O, additional, Madejski, G, additional, Barnouin, T, additional, Gesu, L Di, additional, Dovčiak, M, additional, Gianolli, V E, additional, Krawczynski, H, additional, Loktev, V, additional, Middei, R, additional, Podgorny, J, additional, Puccetti, S, additional, Ratheesh, A, additional, Soffitta, P, additional, Tombesi, F, additional, Ehlert, S R, additional, Massaro, F, additional, Agudo, I, additional, Antonelli, L A, additional, Bachetti, M, additional, Baldini, L, additional, Baumgartner, W H, additional, Bellazzini, R, additional, Bongiorno, S D, additional, Bonino, R, additional, Brez, A, additional, Bucciantini, N, additional, Capitanio, F, additional, Castellano, S, additional, Cavazzuti, E, additional, Chen, C-T, additional, Ciprini, S, additional, Costa, E, additional, Del Monte, E, additional, Lalla, N Di, additional, Marco, A Di, additional, Donnarumma, I, additional, Doroshenko, V, additional, Enoto, T, additional, Evangelista, Y, additional, Fabiani, S, additional, Ferrazzoli, R, additional, García, J A, additional, Gunji, S, additional, Heyl, J, additional, Iwakiri, W, additional, Jorstad, S G, additional, Kaaret, P, additional, Karas, V, additional, Kislat, F, additional, Kitaguchi, T, additional, Kolodziejczak, J J, additional, Monaca, F La, additional, Latronico, L, additional, Liodakis, I, additional, Maldera, S, additional, Manfreda, A, additional, Marscher, A P, additional, Mitsuishi, I, additional, Mizuno, T, additional, Muleri, F, additional, Negro, M, additional, Ng, C-Y, additional, O’Dell, S L, additional, Omodei, N, additional, Oppedisano, C, additional, Papitto, A, additional, Pavlov, G G, additional, Peirson, A L, additional, Perri, M, additional, Pesce-Rollins, M, additional, Pilia, M, additional, Possenti, A, additional, Ramsey, B D, additional, Rankin, J, additional, Roberts, O J, additional, Romani, R W, additional, Sgrò, C, additional, Slane, P, additional, Spandre, G, additional, Swartz, D A, additional, Tamagawa, T, additional, Tavecchio, F, additional, Taverna, R, additional, Tawara, Y, additional, Tennant, A F, additional, Thomas, N E, additional, Trois, A, additional, Tsygankov, S S, additional, Turolla, R, additional, Vink, J, additional, Weisskopf, M C, additional, Wu, K, additional, Xie, F, additional, and Zane, S, additional

Published
2023
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33. The geometry of the hot corona in MCG-05-23-16 constrained by X-ray polarimetry

Author

Tagliacozzo, D, primary, Marinucci, A, additional, Ursini, F, additional, Matt, G, additional, Bianchi, S, additional, Baldini, L, additional, Barnouin, T, additional, Cavero Rodriguez, N, additional, De Rosa, A, additional, Di Gesu, L, additional, Dovčiak, M, additional, Harper, D, additional, Ingram, A, additional, Karas, V, additional, Kim, D E, additional, Krawczynski, H, additional, Madejski, G, additional, Marin, F, additional, Middei, R, additional, Marshall, H L, additional, Muleri, F, additional, Panagiotou, C, additional, Petrucci, P-O, additional, Podgorny, J, additional, Poutanen, J, additional, Puccetti, S, additional, Soffitta, P, additional, Tombesi, F, additional, Veledina, A, additional, Zhang, W, additional, Agudo, I, additional, Antonelli, L A, additional, Bachetti, M, additional, Baumgartner, W H, additional, Bellazzini, R, additional, Bongiorno, S D, additional, Bonino, R, additional, Brez, A, additional, Bucciantini, N, additional, Capitanio, F, additional, Castellano, S, additional, Cavazzuti, E, additional, Chen, C-T, additional, Ciprini, S, additional, Costa, E, additional, Del Monte, E, additional, Di Lalla, N, additional, Di Marco, A, additional, Donnarumma, I, additional, Doroshenko, V, additional, Ehlert, S R, additional, Enoto, T, additional, Evangelista, Y, additional, Fabiani, S, additional, Ferrazzoli, R, additional, Garcia, J A, additional, Gunji, S, additional, Heyl, J, additional, Iwakiri, W, additional, Jorstad, S G, additional, Kaaret, P, additional, Kislat, F, additional, Kitaguchi, T, additional, Kolodziejczak, J J, additional, La Monaca, F, additional, Latronico, L, additional, Liodakis, I, additional, Maldera, S, additional, Manfreda, A, additional, Marscher, A P, additional, Massaro, F, additional, Mitsuishi, I, additional, Mizuno, T, additional, Negro, M, additional, Ng, C-Y, additional, O’Dell, S L, additional, Omodei, N, additional, Oppedisano, C, additional, Papitto, A, additional, Pavlov, G G, additional, Peirson, A L, additional, Perri, M, additional, Pesce-Rollins, M, additional, Pilia, M, additional, Possenti, A, additional, Ramsey, B D, additional, Rankin, J, additional, Ratheesh, A, additional, Roberts, O J, additional, Romani, R W, additional, Sgrò, C, additional, Slane, P, additional, Spandre, G, additional, Swartz, D A, additional, Tamagawa, T, additional, Tavecchio, F, additional, Taverna, R, additional, Tawara, Y, additional, Tennant, A F, additional, Thomas, N E, additional, Trois, A, additional, Tsygankov, S S, additional, Turolla, R, additional, Vink, J, additional, Weisskopf, M C, additional, Wu, K, additional, Xie, F, additional, and Zane, S, additional

Published
2023
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34. M for Martin-Hopkins or machine learning?

Author

Rubio Lanchas, S., Villar Vázquez, C., Trapiello Férnandez, W., Velasco De Cos, G., Herrero Castellano, S., Mayán Santos, L., Aníbarro Miralles, I., Calvo Nieves, M.D., Guerrero Peral, A.B., Aguirre Gervas, B., Marcos Sánchez, H., and Vidriales Vicente, I.

Published
2024
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36. X-ray polarimetry and spectroscopy of the neutron star low-mass X-ray binary GX 9+9: An in-depth study with IXPE and NuSTAR

Author

Ursini, F., primary, Farinelli, R., additional, Gnarini, A., additional, Poutanen, J., additional, Bianchi, S., additional, Capitanio, F., additional, Di Marco, A., additional, Fabiani, S., additional, La Monaca, F., additional, Malacaria, C., additional, Matt, G., additional, Mikušincová, R., additional, Cocchi, M., additional, Kaaret, P., additional, Kajava, J. J. E., additional, Pilia, M., additional, Zhang, W., additional, Agudo, I., additional, Antonelli, L. A., additional, Bachetti, M., additional, Baldini, L., additional, Baumgartner, W. H., additional, Bellazzini, R., additional, Bongiorno, S. D., additional, Bonino, R., additional, Brez, A., additional, Bucciantini, N., additional, Castellano, S., additional, Cavazzuti, E., additional, Chen, C.-T., additional, Ciprini, S., additional, Costa, E., additional, De Rosa, A., additional, Del Monte, E., additional, Di Gesu, L., additional, Di Lalla, N., additional, Donnarumma, I., additional, Doroshenko, V., additional, Dovčiak, M., additional, Ehlert, S. R., additional, Enoto, T., additional, Evangelista, Y., additional, Ferrazzoli, R., additional, Garcia, J. A., additional, Gunji, S., additional, Hayashida, K., additional, Heyl, J., additional, Iwakiri, W., additional, Jorstad, S. G., additional, Karas, V., additional, Kislat, F., additional, Kitaguchi, T., additional, Kolodziejczak, J. J., additional, Krawczynski, H., additional, Latronico, L., additional, Liodakis, I., additional, Maldera, S., additional, Manfreda, A., additional, Marin, F., additional, Marinucci, A., additional, Marscher, A. P., additional, Marshall, H. L., additional, Massaro, F., additional, Mitsuishi, I., additional, Mizuno, T., additional, Muleri, F., additional, Negro, M., additional, Ng, C.-Y., additional, O’Dell, S. L., additional, Omodei, N., additional, Oppedisano, C., additional, Papitto, A., additional, Pavlov, G. G., additional, Peirson, A. L., additional, Perri, M., additional, Pesce-Rollins, M., additional, Petrucci, P.-O., additional, Possenti, A., additional, Puccetti, S., additional, Ramsey, B. D., additional, Rankin, J., additional, Ratheesh, A., additional, Roberts, O. J., additional, Romani, R. W., additional, Sgrò, C., additional, Slane, P., additional, Soffitta, P., additional, Spandre, G., additional, Swartz, D. A., additional, Tamagawa, T., additional, Tavecchio, F., additional, Taverna, R., additional, Tawara, Y., additional, Tennant, A. F., additional, Thomas, N. E., additional, Tombesi, F., additional, Trois, A., additional, Tsygankov, S. S., additional, Turolla, R., additional, Vink, J., additional, Weisskopf, M. C., additional, Wu, K., additional, Xie, F., additional, and Zane, S., additional

Published
2023
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37. X-ray polarimetry of X-ray pulsar X Persei: another orthogonal rotator?

Author

Mushtukov, A A, primary, Tsygankov, S S, additional, Poutanen, J, additional, Doroshenko, V, additional, Salganik, A, additional, Costa, E, additional, Marco, A Di, additional, Heyl, J, additional, Monaca, F La, additional, Lutovinov, A A, additional, Mereminsky, I A, additional, Papitto, A, additional, Semena, A N, additional, Shtykovsky, A E, additional, Suleimanov, V F, additional, Forsblom, S V, additional, González-Caniulef, D, additional, Malacaria, C, additional, Sunyaev, R A, additional, Agudo, I, additional, Antonelli, L A, additional, Bachetti, M, additional, Baldini, L, additional, Baumgartner, W H, additional, Bellazzini, R, additional, Bianchi, S, additional, Bongiorno, S D, additional, Bonino, R, additional, Brez, A, additional, Bucciantini, N, additional, Capitanio, F, additional, Castellano, S, additional, Cavazzuti, E, additional, Chen, C-T, additional, Ciprini, S, additional, De Rosa, A, additional, Del Monte, E, additional, Gesu, L Di, additional, Lalla, N Di, additional, Donnarumma, I, additional, Dovčiak, M, additional, Ehlert, S R, additional, Enoto, T, additional, Evangelista, Y, additional, Fabiani, S, additional, Ferrazzoli, R, additional, Garcia, J A, additional, Gunji, S, additional, Hayashida, K, additional, Iwakiri, W, additional, Jorstad, S G, additional, Kaaret, P, additional, Karas, V, additional, Kislat, F, additional, Kitaguchi, T, additional, Kolodziejczak, J J, additional, Krawczynski, H, additional, Latronico, L, additional, Liodakis, I, additional, Maldera, S, additional, Manfreda, A, additional, Marin, F, additional, Marscher, A P, additional, Marshall, H L, additional, Massaro, F, additional, Matt, G, additional, Mitsuishi, I, additional, Mizuno, T, additional, Muleri, F, additional, Negro, M, additional, Ng, C-Y, additional, O’Dell, S L, additional, Omodei, N, additional, Oppedisano, C, additional, Pavlov, G G, additional, Peirson, A L, additional, Perri, M, additional, Pesce-Rollins, M, additional, Petrucci, P-O, additional, Pilia, M, additional, Possenti, A, additional, Puccetti, S, additional, Ramsey, B D, additional, Rankin, J, additional, Ratheesh, A, additional, Roberts, O J, additional, Romani, R W, additional, Sgrò, C, additional, Slane, P, additional, Soffitta, P, additional, Spandre, G, additional, Swartz, D A, additional, Tamagawa, T, additional, Tavecchio, F, additional, Taverna, R, additional, Tawara, Y, additional, Tennant, A F, additional, Thomas, N E, additional, Tombesi, F, additional, Trois, A, additional, Turolla, R, additional, Vink, J, additional, Weisskopf, M C, additional, Wu, K, additional, Xie, F, additional, and Zane, S, additional

Published
2023
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38. Uncovering the geometry of the hot X-ray corona in the Seyfert galaxy NGC 4151 with IXPE

Author

Gianolli, V E, primary, Kim, D E, additional, Bianchi, S, additional, Agís-González, B, additional, Madejski, G, additional, Marin, F, additional, Marinucci, A, additional, Matt, G, additional, Middei, R, additional, Petrucci, P-O, additional, Soffitta, P, additional, Tagliacozzo, D, additional, Tombesi, F, additional, Ursini, F, additional, Barnouin, T, additional, De Rosa, A, additional, Di Gesu, L, additional, Ingram, A, additional, Loktev, V, additional, Panagiotou, C, additional, Podgorny, J, additional, Poutanen, J, additional, Puccetti, S, additional, Ratheesh, A, additional, Veledina, A, additional, Zhang, W, additional, Agudo, I, additional, Antonelli, L A, additional, Bachetti, M, additional, Baldini, L, additional, Baumgartner, W H, additional, Bellazzini, R, additional, Bongiorno, S D, additional, Bonino, R, additional, Brez, A, additional, Bucciantini, N, additional, Capitanio, F, additional, Castellano, S, additional, Cavazzuti, E, additional, Chen, C-T, additional, Ciprini, S, additional, Costa, E, additional, Del Monte, E, additional, Di Lalla, N, additional, Di Marco, A, additional, Donnarumma, I, additional, Doroshenko, V, additional, Dovčiak, M, additional, Ehlert, S R, additional, Enoto, T, additional, Evangelista, Y, additional, Fabiani, S, additional, Ferrazzoli, R, additional, García, J A, additional, Gunji, S, additional, Heyl, J, additional, Iwakiri, W, additional, Jorstad, S G, additional, Kaaret, P, additional, Karas, V, additional, Kislat, F, additional, Kitaguchi, T, additional, Kolodziejczak, J J, additional, Krawczynski, H, additional, La Monaca, F, additional, Latronico, L, additional, Liodakis, I, additional, Maldera, S, additional, Manfreda, A, additional, Marscher, A P, additional, Marshall, H L, additional, Massaro, F, additional, Mitsuishi, I, additional, Mizuno, T, additional, Muleri, F, additional, Negro, M, additional, Ng, C-Y, additional, O’Dell, S L, additional, Omodei, N, additional, Oppedisano, C, additional, Papitto, A, additional, Pavlov, G G, additional, Peirson, A L, additional, Perri, M, additional, Pesce-Rollins, M, additional, Pilia, M, additional, Possenti, A, additional, Ramsey, B D, additional, Rankin, J, additional, Roberts, O J, additional, Romani, R W, additional, Sgrò, C, additional, Slane, P, additional, Spandre, G, additional, Swartz, D A, additional, Tamagawa, T, additional, Tavecchio, F, additional, Taverna, R, additional, Tawara, Y, additional, Tennant, A F, additional, Thomas, N E, additional, Trois, A, additional, Tsygankov, S S, additional, Turolla, R, additional, Vink, J, additional, Weisskopf, M C, additional, Wu, K, additional, Xie, F, additional, and Zane, S, additional

Published
2023
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41. Complex variations of X-ray polarization in the X-ray pulsar LS V +44 17/RX J0440.9+4431

Author

Doroshenko, V., Poutanen, J., Heyl, J., Tsygankov, S. S., Berdyugin, A. V., Caiazzo, I., Forsblom, S. V., Gonz\ález-Caniulef, D., Kravtsov, V., Loktev, V. V., Lutovinov, A. A., Malacaria, C., Mereminskiy, I. A., Molkov, S. V., Mushtukov, A., Nitindala, A. P., Salganik, A., Santangelo, A., Suleimanov, V. F., Turolla, R., Veledina, A., Agudo, I., Antonelli, L. A., Bachetti, M., Baldini, L., Baumgartner, W. H., Bellazzini, R., Bianchi, S., Bongiorno, S. D., Bonino, R., Brez, A., Bucciantini, N., Capitanio, F., Castellano, S., Cavazzuti, E., Chen, C., Ciprini, S., Costa, E., De Rosa, A., Del Monte, E., Di Gesu, L., Di Lalla, N., Di Marco, A., Donnarumma, I., Dovčiak, M., Ehlert, S. R., Enoto, T., Evangelista, Y., Fabiani, S., Ferrazzoli, R., Garcia, J. A., Gunji, S., Hayashida, K., Iwakiri, W., Jorstad, S. G., Kaaret, P., Karas, V., Kislat, F., Kitaguchi, T., Kolodziejczak, J. J., Krawczynski, H., La Monaca, F., Latronico, L., Liodakis, I., Maldera, S., Manfreda, A., Marin, F., Marinucci, A., Marscher, A. P., Marshall, H. L., Massaro, F., Matt, G., Mitsuishi, I., Mizuno, T., Muleri, F., Negro, M., Ng, C., O'Dell, S. L., Omodei, N., Oppedisano, C., Papitto, A., Pavlov, G. G., Peirson, A. L., Perri, M., Pesce-Rollins, M., Petrucci, P., Pilia, M., Possenti, A., Puccetti, S., Ramsey, B. D., Rankin, J., Ratheesh, A., Roberts, O. J., Romani, R. W., Sgrò, C., Slane, P., Soffitta, P., Spandre, G., Swartz, D. A., Tamagawa, T., Tavecchio, F., Taverna, R., Tawara, Y., Tent, A. F., Thomas, N. E., Tombesi, F., Trois, A., Vink, J., Weisskopf, M. C., Wu, K., Xie, F., and Zane, S.

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), FOS: Physical sciences, Astrophysics - High Energy Astrophysical Phenomena
Abstract

We report on \ixpe observations of the Be-transient X-ray pulsar LS V +44 17/RX J0440.9+4431 at two luminosity levels during the giant outburst in January--February 2023. Considering the observed spectral variability and changes in the pulse profiles, the source was likely caught in super- and sub-critical states with significantly different emission region geometry, associated with the presence of accretion columns and hot spots, respectively. We focus here on the pulse-phase resolved polarimetric analysis and find that the observed dependencies of the polarization degree and polarization angle (PA) on pulse phase are indeed drastically different for the two observations. The observed differences, if interpreted within the framework of the rotating vector model (RVM), imply dramatic variations of the spin axis inclination and the position angle and the magnetic colatitude by tens of degrees within just a few days separating the observations. We suggest that the apparent changes in the observed PA phase dependence are predominantly related to the presence of a polarized unpulsed component in addition to the polarized radiation associated with the pulsar itself. We show that the observed PA phase dependence in both observations can then be explained with a single set of RVM parameters defining the pulsar's geometry. We also suggest that the additional polarized component is likely produced by scattering of the pulsar radiation off the equatorial disk wind., 9 pages, 5 figures, submitted to A&A

Published
2023

42. Discovery of strongly variable X-ray polarization in the neutron star low-mass X-ray binary transient XTE J1701$-$462

Author

Cocchi, M., Gnarini, A., Fabiani, S., Ursini, F., Poutanen, J., Capitanio, F., Bobrikova, A., Farinelli, R., Paizis, A., Sidoli, L., Veledina, A., Bianchi, S., Di Marco, A., Ingram, A., Kajava, J. J. E., La Monaca, F., Matt, G., Malacaria, C., Mikusincova, R., Rankin, J., Zane, S., Agudo, I., Antonelli, L. A., Bachetti, M., Baldini, L., Baumgartner, W. H., Bellazzini, R., Bongiorno, S. D., Bonino, R., Brez, A., Bucciantini, N., Castellano, S., Cavazzuti, E., Chen, C. -T., Ciprini, S., Costa, E., De Rosa, A., Del Monte, E., Di Gesu, L., Di Lalla, N., Donnarumma, I., Doroshenko, V., Dovciak, M., Ehlert, S. R., Enoto, T., Evangelista, Y., Ferrazzoli, R., Garcia, J. A., Gunji, S., Hayashida, K., Heyl, J., Iwakiri, W., Jorstad, S. G., Kaaret, P., Karas, V., Kislat, F., Kitaguchi, T., Kolodziejczak, J. J., Krawczynski, H., Latronico, L., Liodakis, I., Maldera, S., Manfreda, A., Marin, F., Marinucci, A., Marscher, A. P., Marshall, H. L., Massaro, F., Mitsuishi, I., Mizuno, T., Muleri, F., Negro, M., C. -Y., Ng, O'Dell, S. L., Omodei, N., Oppedisano, C., Papitto, A., Pavlov, G. G., Peirson, A. L., Perri, M., Pesce-Rollins, M., Petrucci, P. -O., Pilia, M., Possenti, A., Puccetti, S., Ramsey, B. D., Ratheesh, A., Roberts, O. J., Romani, R. W., Sgro, C., Slane, P., Soffitta, P., Spandre, G., Swartz, D. A., Tamagawa, T., Tavecchio, F., Taverna, R., Tawara, Y., Tennant, A. F., Thomas, N. E., Tombesi, F., Trois, A., Tsygankov, S. S., Turolla, R., Vink, J., Weisskopf, M. C., Wu, K., Xie, F., Cocchi, M., Gnarini, A., Fabiani, S., Ursini, F., Poutanen, J., Capitanio, F., Bobrikova, A., Farinelli, R., Paizis, A., Sidoli, L., Veledina, A., Bianchi, S., Di Marco, A., Ingram, A., Kajava, J. J. E., La Monaca, F., Matt, G., Malacaria, C., Mikusincova, R., Rankin, J., Zane, S., Agudo, I., Antonelli, L. A., Bachetti, M., Baldini, L., Baumgartner, W. H., Bellazzini, R., Bongiorno, S. D., Bonino, R., Brez, A., Bucciantini, N., Castellano, S., Cavazzuti, E., Chen, C. -T., Ciprini, S., Costa, E., De Rosa, A., Del Monte, E., Di Gesu, L., Di Lalla, N., Donnarumma, I., Doroshenko, V., Dovciak, M., Ehlert, S. R., Enoto, T., Evangelista, Y., Ferrazzoli, R., Garcia, J. A., Gunji, S., Hayashida, K., Heyl, J., Iwakiri, W., Jorstad, S. G., Kaaret, P., Karas, V., Kislat, F., Kitaguchi, T., Kolodziejczak, J. J., Krawczynski, H., Latronico, L., Liodakis, I., Maldera, S., Manfreda, A., Marin, F., Marinucci, A., Marscher, A. P., Marshall, H. L., Massaro, F., Mitsuishi, I., Mizuno, T., Muleri, F., Negro, M., Ng, C. -Y., O'Dell, S. L., Omodei, N., Oppedisano, C., Papitto, A., Pavlov, G. G., Peirson, A. L., Perri, M., Pesce-Rollins, M., Petrucci, P. -O., Pilia, M., Possenti, A., Puccetti, S., Ramsey, B. D., Ratheesh, A., Roberts, O. J., Romani, R. W., Sgro, C., Slane, P., Soffitta, P., Spandre, G., Swartz, D. A., Tamagawa, T., Tavecchio, F., Taverna, R., Tawara, Y., Tennant, A. F., Thomas, N. E., Tombesi, F., Trois, A., Tsygankov, S. S., Turolla, R., Vink, J., Weisskopf, M. C., Wu, K., and Xie, F.

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Astrophysics - Solar and Stellar Astrophysics, FOS: Physical sciences, Astrophysics - High Energy Astrophysical Phenomena, Solar and Stellar Astrophysics (astro-ph.SR)
Abstract

After about 16 years since its first outburst, the transient neutron star low-mass X-ray binary XTE J1701$-$462 turned on again in September 2022, allowing for the first study of its X-ray polarimetric characteristics by a dedicated observing program with the Imaging X-ray Polarimeter Explorer (IXPE). Polarimetric studies of XTE J1701$-$462 have been expected to improve our understanding of accreting weakly magnetized neutron stars, in particular, the physics and the geometry of the hot inner regions close to the compact object. The IXPE data of two triggered observations were analyzed using time-resolved spectroscopic and polarimetric techniques, following the source along its Z-track of the color-color diagram. During the first pointing on 2022 September 29, an average 2-8 keV polarization degree of 4.6$\pm$ 0.4\% was measured, the highest value found up to now for this class of sources. Conversely, only a $\sim$0.6\% average degree was obtained during the second pointing ten days later. The polarimetric signal appears to be strictly related to the higher energy blackbody component associated with the boundary layer (BL) emission and its reflection from the inner accretion disk, and it is as strong as 6.1\% and 1.2\% ($>95\%$ significant) above 3-4 keV for the two measurements, respectively. The variable polarimetric signal is apparently related to the spectral characteristics of XTE J1701$-$462, which is the strongest when the source was in the horizontal branch of its Z-track and the weakest in the normal branch. These IXPE results provide new important observational constraints on the physical models and geometry of the Z-sources. Here, we discuss the possible reasons for the presence of strong and variable polarization among these sources., 7 pages, 8 figures; published in A&A 674, L10 (2023)

Published
2023
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43. X-ray polarimetry of X-ray pulsar X Persei: another orthogonal rotator?

Author

Mushtukov, A A, Tsygankov, S S, Poutanen, J, Doroshenko, V, Salganik, A, Costa, E, Marco, A Di, Heyl, J, Monaca, F La, Lutovinov, A A, Mereminsky, I A, Papitto, A, Semena, A N, Shtykovsky, A E, Suleimanov, V F, Forsblom, S V, González-Caniulef, D, Malacaria, C, Sunyaev, R A, Agudo, I, Antonelli, L A, Bachetti, M, Baldini, L, Baumgartner, W H, Bellazzini, R, Bianchi, S, Bongiorno, S D, Bonino, R, Brez, A, Bucciantini, N, Capitanio, F, Castellano, S, Cavazzuti, E, Chen, C-T, Ciprini, S, De&nbsp, Rosa, A, Del Monte, E, Gesu, L Di, Lalla, N Di, Donnarumma, I, Dovčiak, M, Ehlert, S R, Enoto, T, Evangelista, Y, Fabiani, S, Ferrazzoli, R, Garcia, J A, Gunji, S, Hayashida, K, Iwakiri, W, Jorstad, S G, Kaaret, P, Karas, V, Kislat, F, Kitaguchi, T, Kolodziejczak, J J, Krawczynski, H, Latronico, L, Liodakis, I, Maldera, S, Manfreda, A, Marin, F, Marscher, A P, Marshall, H L, Massaro, F, Matt, G, Mitsuishi, I, Mizuno, T, Muleri, F, Negro, M, Ng, C-Y, O’Dell, S L, Omodei, N, Oppedisano, C, Pavlov, G G, Peirson, A L, Perri, M, Pesce-Rollins, M, Petrucci, P-O, Pilia, M, Possenti, A, Puccetti, S, Ramsey, B D, Rankin, J, Ratheesh, A, Roberts, O J, Romani, R W, Sgrò, C, Slane, P, Soffitta, P, Spandre, G, Swartz, D A, Tamagawa, T, Tavecchio, F, Taverna, R, Tawara, Y, Tennant, A F, Thomas, N E, Tombesi, F, Trois, A, Turolla, R, Vink, J, Weisskopf, M C, Wu, K, Xie, F, Zane, S, Mushtukov, A A, Tsygankov, S S, Poutanen, J, Doroshenko, V, Salganik, A, Costa, E, Marco, A Di, Heyl, J, Monaca, F La, Lutovinov, A A, Mereminsky, I A, Papitto, A, Semena, A N, Shtykovsky, A E, Suleimanov, V F, Forsblom, S V, González-Caniulef, D, Malacaria, C, Sunyaev, R A, Agudo, I, Antonelli, L A, Bachetti, M, Baldini, L, Baumgartner, W H, Bellazzini, R, Bianchi, S, Bongiorno, S D, Bonino, R, Brez, A, Bucciantini, N, Capitanio, F, Castellano, S, Cavazzuti, E, Chen, C-T, Ciprini, S, De&nbsp, Rosa, A, Del Monte, E, Gesu, L Di, Lalla, N Di, Donnarumma, I, Dovčiak, M, Ehlert, S R, Enoto, T, Evangelista, Y, Fabiani, S, Ferrazzoli, R, Garcia, J A, Gunji, S, Hayashida, K, Iwakiri, W, Jorstad, S G, Kaaret, P, Karas, V, Kislat, F, Kitaguchi, T, Kolodziejczak, J J, Krawczynski, H, Latronico, L, Liodakis, I, Maldera, S, Manfreda, A, Marin, F, Marscher, A P, Marshall, H L, Massaro, F, Matt, G, Mitsuishi, I, Mizuno, T, Muleri, F, Negro, M, Ng, C-Y, O’Dell, S L, Omodei, N, Oppedisano, C, Pavlov, G G, Peirson, A L, Perri, M, Pesce-Rollins, M, Petrucci, P-O, Pilia, M, Possenti, A, Puccetti, S, Ramsey, B D, Rankin, J, Ratheesh, A, Roberts, O J, Romani, R W, Sgrò, C, Slane, P, Soffitta, P, Spandre, G, Swartz, D A, Tamagawa, T, Tavecchio, F, Taverna, R, Tawara, Y, Tennant, A F, Thomas, N E, Tombesi, F, Trois, A, Turolla, R, Vink, J, Weisskopf, M C, Wu, K, Xie, F, and Zane, S

Published
2023

44. Uncovering the geometry of the hot X-ray corona in the seyfert galaxy NGC 4151 with IXPE

Author

E Gianolli, V, E Kim, D, Bianchi, S, Ag??s-Gonz??lez, B, Madejski, G, Marin, F, Marinucci, A, Matt, G, Middei, R, P-O, Petrucci, Soffitta, P, Tagliacozzo, D, Tombesi, F, Ursini, F, Barnouin, T, A De Rosa, L Di Gesu, Ingram, A, Loktev, V, Panagiotou, C, Podgorny, J, Poutanen, J, Puccetti, S, Ratheesh, A, Veledina, A, Zhang, W, Agudo, I, A Antonelli, L, Bachetti, M, Baldini, L, H Baumgartner, W, Bellazzini, R, D Bongiorno, S, Bonino, R, Brez, A, Bucciantini, N, Capitanio, F, Castellano, S, Cavazzuti, E, C-T, Chen, Ciprini, S, Costa, E, E Del Monte, N Di Lalla, A Di Marco, Donnarumma, I, Doroshenko, V, Dov??iak, M, R Ehlert, S, Enoto, T, Evangelista, Y, Fabiani, S, Ferrazzoli, R, A Garc??a, J, Gunji, S, Heyl, J, Iwakiri, W, G Jorstad, S, Kaaret, P, Karas, V, Kislat, F, Kitaguchi, T, J Kolodziejczak, J, Krawczynski, H, F La Monaca, Latronico, L, Liodakis, I, Maldera, S, Manfreda, A, P Marscher, A, L Marshall, H, Massaro, F, Mitsuishi, I, Mizuno, T, Muleri, F, Negro, M, C-Y, Ng, L O???Dell, S, Omodei, N, Oppedisano, C, Papitto, A, G Pavlov, G, L Peirson, A, Perri, M, Pesce-Rollins, M, Pilia, M, Possenti, A, D Ramsey, B, Rankin, J, J Roberts, O, W Romani, R, Sgr??, C, Slane, P, Spandre, G, A Swartz, D, Tamagawa, T, Tavecchio, F, Taverna, R, Tawara, Y, F Tennant, A, E Thomas, N, Trois, A, S Tsygankov, S, Turolla, R, Vink, J, C Weisskopf, M, K, Wu, Xie, F, Zane, S, E Gianolli, V, E Kim, D, Bianchi, S, Ag??s-Gonz??lez, B, Madejski, G, Marin, F, Marinucci, A, Matt, G, Middei, R, Petrucci, P-O, Soffitta, P, Tagliacozzo, D, Tombesi, F, Ursini, F, Barnouin, T, De Rosa, A, Di Gesu, L, Ingram, A, Loktev, V, Panagiotou, C, Podgorny, J, Poutanen, J, Puccetti, S, Ratheesh, A, Veledina, A, Zhang, W, Agudo, I, A Antonelli, L, Bachetti, M, Baldini, L, H Baumgartner, W, Bellazzini, R, D Bongiorno, S, Bonino, R, Brez, A, Bucciantini, N, Capitanio, F, Castellano, S, Cavazzuti, E, Chen, C-T, Ciprini, S, Costa, E, Del Monte, E, Di Lalla, N, Di Marco, A, Donnarumma, I, Doroshenko, V, Dov??iak, M, R Ehlert, S, Enoto, T, Evangelista, Y, Fabiani, S, Ferrazzoli, R, A Garc??a, J, Gunji, S, Heyl, J, Iwakiri, W, G Jorstad, S, Kaaret, P, Karas, V, Kislat, F, Kitaguchi, T, J Kolodziejczak, J, Krawczynski, H, La Monaca, F, Latronico, L, Liodakis, I, Maldera, S, Manfreda, A, P Marscher, A, L Marshall, H, Massaro, F, Mitsuishi, I, Mizuno, T, Muleri, F, Negro, M, Ng, C-Y, L O???Dell, S, Omodei, N, Oppedisano, C, Papitto, A, G Pavlov, G, L Peirson, A, Perri, M, Pesce-Rollins, M, Pilia, M, Possenti, A, D Ramsey, B, Rankin, J, J Roberts, O, W Romani, R, Sgr??, C, Slane, P, Spandre, G, A Swartz, D, Tamagawa, T, Tavecchio, F, Taverna, R, Tawara, Y, F Tennant, A, E Thomas, N, Trois, A, S Tsygankov, S, Turolla, R, Vink, J, C Weisskopf, M, Wu, K, Xie, F, and Zane, S

Published
2023

45. Genomic investigations of unexplained acute hepatitis in children

Author

Morfopoulou, S., Buddle, S., Torres Montaguth, O.E., Atkinson, L., Guerra-Assunção, J.A., Moradi Marjaneh, M., Zenezeni Chiozzi, R., Storey, N., Campos, L., Hutchinson, J.C., Counsell, J.R., Pollara, G., Roy, S., Venturini, C., Antinao Diaz, J.F., Siam, A., Tappouni, L.J., Asgarian, Z., Ng, J., Hanlon, K.S., Lennon, A., McArdle, A., Czap, A., Rosenheim, J., Andrade, C., Anderson, G., Lee, J.C.D., Williams, R., Williams, C.A, Tutill, H., Bayzid, N., Martin Bernal, L.M., Macpherson, H., Montgomery, K.A., Moore, C., Templeton, K., Neill, C., Holden, M., Gunson, R., Shepherd, S.J., Shah, P., Cooray, S., Voice, M., Steele, M., Fink, C., Whittaker, T.E., Santilli, G., Gissen, P., Kaufer, B.B., Reich, J., Andreani, J., Simmonds, P., Alrabiah, D.K., Castellano, S., Chikowore, P., Odam, M., Rampling, T., Houlihan, C., Hoschler, K., Talts, T., Celma, C., Gonzalez, S., Gallagher, E., Simmons, R., Watson, C., Mandal, Sema, Zambon, M., Chand, M., Hatcher, J., De, S., Baillie, K., Semple, M.G., Groot, R. de, Gool, A.J. van, Gloerich, J., Aerde, K.J. van, Henriet, S.S.V., Broek, B. van den, Huijnen, M.A., Philipsen, R., Martin, J., Ushiro-Lumb, I., Noursadeghi, M., Deheragoda, M., Hadzic, N., Grammatikopoulos, T., Brown, R., Kelgeri, C., Thalassinos, K., Waddington, S.N., Jacques, T.S., Thomson, E., Levin, M., Brown, J.R., Breuer, J., Morfopoulou, S., Buddle, S., Torres Montaguth, O.E., Atkinson, L., Guerra-Assunção, J.A., Moradi Marjaneh, M., Zenezeni Chiozzi, R., Storey, N., Campos, L., Hutchinson, J.C., Counsell, J.R., Pollara, G., Roy, S., Venturini, C., Antinao Diaz, J.F., Siam, A., Tappouni, L.J., Asgarian, Z., Ng, J., Hanlon, K.S., Lennon, A., McArdle, A., Czap, A., Rosenheim, J., Andrade, C., Anderson, G., Lee, J.C.D., Williams, R., Williams, C.A, Tutill, H., Bayzid, N., Martin Bernal, L.M., Macpherson, H., Montgomery, K.A., Moore, C., Templeton, K., Neill, C., Holden, M., Gunson, R., Shepherd, S.J., Shah, P., Cooray, S., Voice, M., Steele, M., Fink, C., Whittaker, T.E., Santilli, G., Gissen, P., Kaufer, B.B., Reich, J., Andreani, J., Simmonds, P., Alrabiah, D.K., Castellano, S., Chikowore, P., Odam, M., Rampling, T., Houlihan, C., Hoschler, K., Talts, T., Celma, C., Gonzalez, S., Gallagher, E., Simmons, R., Watson, C., Mandal, Sema, Zambon, M., Chand, M., Hatcher, J., De, S., Baillie, K., Semple, M.G., Groot, R. de, Gool, A.J. van, Gloerich, J., Aerde, K.J. van, Henriet, S.S.V., Broek, B. van den, Huijnen, M.A., Philipsen, R., Martin, J., Ushiro-Lumb, I., Noursadeghi, M., Deheragoda, M., Hadzic, N., Grammatikopoulos, T., Brown, R., Kelgeri, C., Thalassinos, K., Waddington, S.N., Jacques, T.S., Thomson, E., Levin, M., Brown, J.R., and Breuer, J.

Abstract

Contains fulltext : 294860.pdf (Publisher’s version ) (Open Access)

Published
2023

46. Genomic investigations of unexplained acute hepatitis in children

Author

Morfopoulou, S, Buddle, S, Torres Montaguth, OE, Atkinson, L, Guerra-Assunção, JA, Moradi Marjaneh, M, Zennezini Chiozzi, R, Storey, N, Campos, L, Hutchinson, JC, Counsell, JR, Pollara, G, Roy, S, Venturini, C, Antinao Diaz, JF, Siam, A, Tappouni, LJ, Asgarian, Z, Ng, J, Hanlon, KS, Lennon, A, McArdle, A, Czap, A, Rosenheim, J, Andrade, C, Anderson, G, Lee, JCD, Williams, R, Williams, CA, Tutill, H, Bayzid, N, Martin Bernal, LM, Macpherson, H, Montgomery, K-A, Moore, C, Templeton, K, Neill, C, Holden, M, Gunson, R, Shepherd, SJ, Shah, P, Cooray, S, Voice, M, Steele, M, Fink, C, Whittaker, TE, Santilli, G, Gissen, P, Kaufer, BB, Reich, J, Andreani, J, Simmonds, P, Alrabiah, DK, Castellano, S, Chikowore, P, Odam, M, Rampling, T, Houlihan, C, Hoschler, K, Talts, T, Celma, C, Gonzalez, S, Gallagher, E, Simmons, R, Watson, C, Mandal, S, Zambon, M, Chand, M, Hatcher, J, De, S, Baillie, K, Semple, MG, DIAMONDS Consortium, PERFORM Consortium, ISARIC 4C Investigators, Martin, J, Ushiro-Lumb, I, Noursadeghi, M, Deheragoda, M, Hadzic, N, Grammatikopoulos, T, Brown, R, Kelgeri, C, Thalassinos, K, Waddington, SN, Jacques, TS, Thomson, E, Levin, M, Brown, JR, and Breuer, J

Abstract

Since its first identification in Scotland, over 1,000 cases of unexplained paediatric hepatitis in children have been reported worldwide, including 278 cases in the UK1. Here we report an investigation of 38 cases, 66 age-matched immunocompetent controls and 21 immunocompromised comparator participants, using a combination of genomic, transcriptomic, proteomic and immunohistochemical methods. We detected high levels of adeno-associated virus 2 (AAV2) DNA in the liver, blood, plasma or stool from 27 of 28 cases. We found low levels of adenovirus (HAdV) and human herpesvirus 6B (HHV-6B) in 23 of 31 and 16 of 23, respectively, of the cases tested. By contrast, AAV2 was infrequently detected and at low titre in the blood or the liver from control children with HAdV, even when profoundly immunosuppressed. AAV2, HAdV and HHV-6 phylogeny excluded the emergence of novel strains in cases. Histological analyses of explanted livers showed enrichment for T cells and B lineage cells. Proteomic comparison of liver tissue from cases and healthy controls identified increased expression of HLA class 2, immunoglobulin variable regions and complement proteins. HAdV and AAV2 proteins were not detected in the livers. Instead, we identified AAV2 DNA complexes reflecting both HAdV-mediated and HHV-6B-mediated replication. We hypothesize that high levels of abnormal AAV2 replication products aided by HAdV and, in severe cases, HHV-6B may have triggered immune-mediated hepatic disease in genetically and immunologically predisposed children.

Published
2023

47. The Recoil Directionality (ReD) Experiment

Author

Sanfilippo S., Agnes P., Albergo S., Albuquerque I. F. M., Arba M., Ave M. P., Boiano A., Bonivento W., Bottino B., Bussino S., Cadeddu M., Caminata A., Canci N., Cappello G., Caravati M., Cariello M., Castellano S., Catalanotti S., Cataudella V., Cereseto R., Cesarano R., Cicalo C., Covone G., De Candia A., De Filippis G., De Rosa G., Davini S., Dionisi C., Dolganov G., Fiorillo G., Franco D., Galbiati C., Giovanetti G. K., Gulino M., Ippolito V., Kemmerich N., Kochanek I., Korga G., Kuss M., La Commara M., La Delfa L., Leyton M., Li X., Lissia M., Mari S. M., Martoff C. J., Masone V., Matteucci G., Musico P., Oleynikov V., Pallavicini M., Pandola L., Razeto A., Rescigno M., Rode J., Rossi N., Sablone D., Scapparone E., Sosa A., Suvorov Y., Testera G., Tricomi A., Tuveri M., Wada M., Wang H., Wang Y., Sanfilippo, S, Agnes, P, Albergo, S, Albuquerque, I, Arba, M, Ave, M, Boiano, A, Bonivento, W M, Bottino, B, Bussino, S, Cadeddu, M, Caminata, A, Canci, N, Cappello, G, Caravati, M, Cariello, M, Castellano, S, Catalanotti, S, Cataudella, V, Cereseto, R, Cesarano, R, Cicalò, C, Covone, G, de Candia, A, De Filippis, G, De Rosa, G, Davini, S, Dionisi, C, Dolganov, G, Fiorillo, G, Franco, D, Giovanetti, G K, Galbiati, C, Gulino, M, Ippolito, V, Kemmerich, N, Kochanek, I, Korga, G, Kuss, M, La Commara, M, La Delfa, L, Leyton, M, Li, X, Lissia, M, Mari, S M, Martoff, C J, Masone, V, Matteucci, G, Musico, P, Oleynikov, V, Pallavicini, M, Pandola, L, Razeto, A, Rescigno, M, Rode, J, Rossi, N, Sablone, D, Scapparone, E, Sosa, A, Suvorov, Y, Testera, G, Tricomi, A, Tuveri, M, Wada, M, Wang, H, Wang, Y, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Sanfilippo, S., Agnes, P., Albergo, S., Albuquerque, I. F. M., Arba, M., Ave, M. P., Boiano, A., Bonivento, W., Bottino, B., Bussino, S., Cadeddu, M., Caminata, A., Canci, N., Cappello, G., Caravati, M., Cariello, M., Castellano, S., Catalanotti, S., Cataudella, V., Cereseto, R., Cesarano, R., Cicalo, C., Covone, G., De Candia, A., De Filippis, G., De Rosa, G., Davini, S., Dionisi, C., Dolganov, G., Fiorillo, G., Franco, D., Galbiati, C., Giovanetti, G. K., Gulino, M., Ippolito, V., Kemmerich, N., Kochanek, I., Korga, G., Kuss, M., La Commara, M., La Delfa, L., Leyton, M., Li, X., Lissia, M., Mari, S. M., Martoff, C. J., Masone, V., Matteucci, G., Musico, P., Oleynikov, V., Pallavicini, M., Pandola, L., Razeto, A., Rescigno, M., Rode, J., Rossi, N., Sablone, D., Scapparone, E., Sosa, A., Suvorov, Y., Testera, G., Tricomi, A., Tuveri, M., Wada, M., Wang, H., and Wang, Y.

Subjects
History, irradiation, Physics::Instrumentation and Detectors, WIMP, WIMP nucleus: scattering, nucleus, Astrophysics::Cosmology and Extragalactic Astrophysics, dark matter: detector, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], sensitivity, dark matter, Computer Science Applications, Education, time projection chamber, n: irradiation, recoil, argon, beam, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], activity report, detector: design, performance, nucleus: recoil
Abstract

International audience; Directional sensitivity to nuclear recoils would provide a smoking gun for a possible discovery of dark matter in the form of WIMPs (Weakly Interacting Massive Particles). A hint of directional dependence of the response of a dual-phase argon Time Projection Chamber (TPC) was found in the SCENE experiment. Given the potential importance of such a capability in the framework of dark matter searches, a new dedicated experiment, ReD (Recoil Directionality), was designed by the Global Argon Dark Matter Collaboration, in order to scrutinize this hint. Prior to the irradiation with a neutron beam, the ReD TPC underwent a long campaign of characterization and optimization: some selected results are presented in this contribution.

Published
2022

50. Accretion geometry of the neutron star low mass X-ray binary Cyg X-2 from X-ray polarization measurements

Author

Farinelli, R, primary, Fabiani, S, additional, Poutanen, J, additional, Ursini, F, additional, Ferrigno, C, additional, Bianchi, S, additional, Cocchi, M, additional, Capitanio, F, additional, De Rosa, A, additional, Gnarini, A, additional, Kislat, F, additional, Matt, G, additional, Mikusincova, R, additional, Muleri, F, additional, Agudo, I, additional, Antonelli, L A, additional, Bachetti, M, additional, Baldini, L, additional, Baumgartner, W H, additional, Bellazzini, R, additional, Bongiorno, S D, additional, Bonino, R, additional, Brez, A, additional, Bucciantini, N, additional, Castellano, S, additional, Cavazzuti, E, additional, Ciprini, S, additional, Costa, E, additional, Del Monte, E, additional, Di Gesu, L, additional, Di Lalla, N, additional, Di Marco, A, additional, Donnarumma, I, additional, Doroshenko, V, additional, Dovčiak, M, additional, Ehlert, S R, additional, Enoto, T, additional, Evangelista, Y, additional, Ferrazzoli, R, additional, Garcia, J A, additional, Gunji, S, additional, Hayashida, K, additional, Heyl, J, additional, Iwakiri, W, additional, Jorstad, S G, additional, Karas, V, additional, Kitaguchi, T, additional, Kolodziejczak, J J, additional, Krawczynski, H, additional, La Monaca, F, additional, Latronico, L, additional, Liodakis, I, additional, Maldera, S, additional, Manfreda, A, additional, Marin, F, additional, Marscher, A P, additional, Marshall, H L, additional, Mitsuishi, I, additional, Mizuno, T, additional, Ng, C-Y, additional, O’Dell, S L, additional, Omodei, N, additional, Oppedisano, C, additional, Papitto, A, additional, Pavlov, G G, additional, Peirson, A L, additional, Perri, M, additional, Pesce-Rollins, M, additional, Petrucci, P O, additional, Pilia, M, additional, Possenti, A, additional, Puccetti, S, additional, Ramsey, B D, additional, Rankin, J, additional, Ratheesh, A, additional, Romani, R W, additional, Sgrò, C, additional, Slane, P, additional, Soffitta, P, additional, Spandre, G, additional, Tamagawa, T, additional, Tavecchio, F, additional, Taverna, R, additional, Tawara, Y, additional, Tennant, A F, additional, Thomas, N E, additional, Tombesi, F, additional, Trois, A, additional, Tsygankov, S S, additional, Turolla, R, additional, Vink, J, additional, Weisskopf, M C, additional, Wu, K, additional, Xie, F, additional, and Zane, S, additional

Published
2022
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