2026ApJ...997...18C


Query : 2026ApJ...997...18C

2026ApJ...997...18C - Astrophys. J., 997, 18 (2026/January-3)

MrMARTIAN: A Multiresolution Mass Reconstruction Algorithm Combining Free-form and Analytic Components.

CHA S. and JEE M.J.

Abstract (from CDS):

We present Multi-resolution MAximum-entropy Reconstruction Technique Integrating Analytic Node (MrMARTIAN), a new hybrid strong lensing (SL) modeling algorithm. By incorporating physically motivated analytic nodes into the free-form method MARS, MrMARTIAN enables stable and flexible mass reconstructions while mitigating oversmoothing in the inner mass profile. Its multiresolution framework increases the degrees of freedom in regions with denser SL constraints, thereby enhancing computational efficiency for a fixed number of free parameters. We evaluate the performance of MrMARTIAN using publicly available simulated SL data and find that it consistently outperforms MARS in recovering both mass and magnification. In particular, it delivers significantly more stable reconstructions when multiple images are sparsely distributed. Finally, we apply MrMARTIAN to the galaxy cluster MACS J0416.1-2403, incorporating two analytic nodes centered on the northeastern and southwestern brightest cluster galaxies. Our mass model, constrained by 412 multiple images, achieves an image-plane rms scatter of $\sim 0\mathop{.}\limits^{^{\prime\prime} }11$, the smallest to date for this dataset.

Abstract Copyright: © 2026. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Dark matter - Strong gravitational lensing - Galaxy clusters - Dark matter distribution

Simbad objects: 1

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Number of rows : 1
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 MCS J0416.1-2403 ClG 04 16 08.380 -24 04 20.80           ~ 425 0

Query : 2026ApJ...997...18C

Basic data :
MCS J0416.1-2403 -- Cluster of Galaxies
Other object types:
otypes_help
gLe (2013ApJ), ClG (2013ApJ,MCS), X (1RXS)
ICRS coord. (ep=J2000) :
04 16 08.380 -24 04 20.80 [ ] E 2016ApJ...821..116U
FK4 coord. (ep=B1950 eq=1950) :
04 14 01.494 -24 11 43.89 [ ]
Gal coord. (ep=J2000) :
221.092888 -44.061725 [ ]
Radial velocity / Redshift / cz :
V(km/s) 96462 [~] / z(~) 0.396 [~] / cz 118718 [~]
   D 2016ApJ...819...36D
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

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: 1031
: 790 Display criteria :

Identifiers (2) :
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MCS J0416.1-2403 1RXS J041609.9-240358

References (425 between 1850 and 2026) (Total 425)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Observing logs

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External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : MCS J0416.1-2403

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1RXS J041609.9-240358

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