2024ApJ...964...77R

Query : 2024ApJ...964...77R

2024ApJ...964...77R - Astrophys. J., 964, 77 (2024/March-3)

X-Ray Polarization of the Black Hole X-Ray Binary 4U 1630-47 Challenges the Standard Thin Accretion Disk Scenario.

RATHEESH A., DOVCIAK M., KRAWCZYNSKI H., PODGORNY J., MARRA L., VELEDINA A., SULEIMANOV V.F., RODRIGUEZ CAVERO N., STEINER J.F., SVOBODA J., MARINUCCI A., BIANCHI S., NEGRO M., MATT G., TOMBESI F., POUTANEN J., INGRAM A., TAVERNA R., WEST A., KARAS V., URSINI F., SOFFITTA P., CAPITANIO F., VISCOLO D., MANFREDA A., MULERI F., PARRA M., BEHESHTIPOUR B., CHUN S., CIBRARIO N., DI LALLA N., FABIANI S., HU K., KAARET P., LOKTEV V., MIKUSINCOVA R., MIZUNO T., OMODEI N., PETRUCCI P.-O., PUCCETTI S., RANKIN J., ZANE S., ZHANG 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 MARCO A., DONNARUMMA I., DOROSHENKO V., EHLERT S.R., ENOTO T., EVANGELISTA Y., FERRAZZOLI R., GARCIA J.A., GUNJI S., HAYASHIDA K., HEYL J., IWAKIRI W., JORSTAD S.G., KISLAT F., KITAGUCHI T., KOLODZIEJCZAK J.J., LA MONACA F., LATRONICO L., LIODAKIS I., MALDERA S., MARIN F., MARSCHER A.P., MARSHALL H.L., MASSARO F., MITSUISHI I., NG S.C.-Y., O'DELL S.L., OPPEDISANO C., PAPITTO A., PAVLOV G.G., PEIRSON A.L., PERRI M., PESCE-ROLLINS M., PILIA M., POSSENTI A., RAMSEY B.D., 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.

Abstract (from CDS):

A large energy-dependent X-ray polarization degree is detected by the Imaging X-ray Polarimetry Explorer (IXPE) in the high-soft emission state of the black hole X-ray binary 4U 1630-47. The highly significant detection (at ≈50σ confidence level) of an unexpectedly high polarization, rising from ∼6% at 2 keV to ∼10% at 8 keV, cannot be easily reconciled with standard models of thin accretion disks. In this work, we compare the predictions of different theoretical models with the IXPE data and conclude that the observed polarization properties are compatible with a scenario in which matter accretes onto the black hole through a thin disk covered by a partially ionized atmosphere flowing away at mildly relativistic velocities.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Polarimetry - X-ray astronomy - Stellar mass black holes - Accretion

Simbad objects: 8

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Number of rows : 8
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 X LMC X-3 HXB 05 38 56.6323605504 -64 05 03.317937504   17 17.2     B2.5Ve 722 0
2 X LMC X-1 HXB 05 39 38.8284304464 -69 44 35.531553624   14.8 14.5 14.924   O8(f)p 700 0
3 X Nor X-1 LXB 16 34 01.610 -47 23 34.80           ~ 579 0
4 SWIFT J1727.8-1613 HXB 17 27 43.3135483931 -16 12 19.062182343           ~ 140 0
5 MAXI J1820+070 LXB 18 20 21.9423816480 +07 11 07.284859440           ~ 511 0
6 HD 226868 HXB 19 58 21.6757355952 +35 12 05.784512688 9.38 9.72 8.91 8.42   O9.7Iabpvar 4590 0
7 V* V1408 Aql LXB 19 59 24.0074252040 +11 42 29.859773292 18.40 18.97 18.95 18.70 18.66 ~ 234 0
8 V* V1521 Cyg HXB 20 32 25.78 +40 57 27.9           WN4/5-6/7 2035 2

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