Search Results - "Muzahid, S"
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An HST/COS survey of molecular hydrogen in DLAs & sub-DLAs at z < 1: molecular fraction and excitation temperature
Published in Monthly notices of the Royal Astronomical Society (11-04-2015)“…We present the results of a systematic search for molecular hydrogen (H2) in low-redshift (0.05 ≲ z ≲ 0.7) Damped Lyα absorbers (DLAs) and sub-DLAs with…”
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COS-Weak: probing the CGM using analogues of weak Mg ii absorbers at z < 0.3
Published in Monthly notices of the Royal Astronomical Society (01-06-2018)Get full text
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3
On the covering fraction variability in an EUV mini-BAL outflow from PG 1206+459
Published in Monthly notices of the Royal Astronomical Society (11-04-2016)“…We report on the first detection of extreme-ultraviolet (EUV) absorption variability in the Ne viii λλ770, 780 mini-broad absorption line (mini-BAL) in the…”
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Spectral variations of Lyman $\alpha$ emission within strongly lensed sources observed with MUSE
Published in Monthly notices of the Royal Astronomical Society (11-11-2019)“…ABSTRACT We present an analysis of ${\rm H\,\rm{\small {I}}}$ Lyman $\alpha$ emission in deep VLT/MUSE observations of two highly magnified and extended…”
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HST/COS observations of a new population of associated QSO absorbers
Published in Monthly notices of the Royal Astronomical Society (21-05-2013)“…We present a sample of new population of associated absorbers, detected through Ne viii λλ770, 780 absorption, in the Hubble Space Telescope (HST)/Cosmic…”
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A high-resolution study of intergalactic Ovi absorbers at z 2.3
Published in Monthly notices of the Royal Astronomical Society (01-03-2012)“…We present a detailed study of the largest sample of intervening Ovi systems in the redshift range 1.9 ≤z≤ 3.1 detected in high-resolution (R 45000) spectra of…”
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HST/COS detection of a Ne viii absorber towards PG 1407+265: an unambiguous tracer of collisionally ionized hot gas?
Published in Monthly notices of the Royal Astronomical Society (21-01-2015)“…We report the detection of Ne viii in a ... = 0.599 61 absorber towards the QSO PG1407+265 (... = 0.94). Besides Ne viii, absorption from H i Lyman series…”
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Molecular hydrogen from z = 0.0963 DLA towards the QSO J1619+3342
Published in Monthly notices of the Royal Astronomical Society (01-10-2014)“…We report the detection of ... in a ... = 0.0963 Damped Lyman α (DLA) system towards zem = 0.4716 QSO J1619+3342. This DLA has log N(H I) = 20.55 ± 0.10, 18.13…”
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Revisiting the He ii to H i ratio in the intergalactic medium
Published in Monthly notices of the Royal Astronomical Society (01-02-2011)“…We estimate the He ii to H i column density ratio, η=N(He ii)/N(He i), in the intergalactic medium towards the high-redshift (z em= 2.885) bright quasar QSO HE…”
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Highly ionized collimated outflow from HE 0238–1904
Published in Monthly notices of the Royal Astronomical Society. Letters (01-07-2012)“…ABSTRACT We present a detailed analysis of a highly ionized, multiphased and collimated outflowing gas detected through O v, O vi, Ne viii and Mg x absorption…”
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A high-resolution study of intergalactic O vi absorbers at z∼ 2.3
Published in Monthly notices of the Royal Astronomical Society (2012)“…We present a detailed study of the largest sample of intervening O vi systems in the redshift range 1.9 ≤z≤ 3.1 detected in high-resolution (R∼ 45 000) spectra…”
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12
Cold parsec-scale gas in a zabs ∼ 0.1 sub-damped Lyman α with disparate H2 and 21-cm absorption
Published in Monthly notices of the Royal Astronomical Society (21-04-2015)Get full text
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13
Understanding the strong intervening O vi absorber at zabs ∼ 0.93 towards PG1206+459
Published in Monthly notices of the Royal Astronomical Society (11-05-2018)Get full text
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14
Cold parsec-scale gas in a z^sub abs^ ~ 0.1 sub-damped Lyman [alpha] with disparate H^sub 2^ and 21-cm absorption
Published in Monthly notices of the Royal Astronomical Society (21-04-2015)“…We present a detailed analysis of a ...-bearing metal-rich sub-damped Lyman α system at zabs = 0.10115 towards the radio-loud quasar J0441-4313, at a projected…”
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15
Cold parsec-scale gas in a z sub( abs) ~ 0.1 sub-damped Lyman alpha with disparate H sub( 2) and 21-cm absorption
Published in Monthly notices of the Royal Astronomical Society (01-04-2015)“…We present a detailed analysis of a ...-bearing metal-rich sub-damped Lyman alpha system at zabs = 0.10115 towards the radio-loud quasar J0441-4313, at a…”
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16
Revisiting the Heii to Hi ratio in the intergalactic medium
Published in Monthly notices of the Royal Astronomical Society (01-02-2011)“…We estimate the Heii to Hi column density ratio, η=N(Heii)/N(Hei), in the intergalactic medium towards the high-redshift (zem= 2.885) bright quasar QSO HE…”
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17
Revisiting the He ii to H i ratio in the intergalactic medium: He ii to H i ratio in the IGM
Published in Monthly notices of the Royal Astronomical Society (01-02-2011)Get full text
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18
A high-resolution study of intergalactic Ovi absorbers at z similar to 2.3
Published in Monthly notices of the Royal Astronomical Society (21-03-2012)“…We present a detailed study of the largest sample of intervening Ovi systems in the redshift range 1.9 less than or equal to z less than or equal to 3.1…”
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A high-resolution study of intergalactic O vi absorbers at z∼ 2.3: High-redshift O vi absorbers
Published in Monthly notices of the Royal Astronomical Society (01-01-2012)Get full text
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20
MusE GAs FLOw and Wind (MEGAFLOW) XII. Rationale and design of a MgII survey of the cool circum-galactic medium with MUSE and UVES: The MEGAFLOW Survey
Published 11-11-2024“…We present the design, rationale, properties and catalogs of the MusE Gas FLOw and Wind survey (MEGAFLOW), a survey of the cool gaseous halos of $z\sim1$…”
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